* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
2063 lines
49 KiB
C
2063 lines
49 KiB
C
/* $NetBSD: vfwprintf.c,v 1.30 2012/03/27 15:05:42 christos Exp $ */
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93";
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__FBSDID("$FreeBSD: src/lib/libc/stdio/vfwprintf.c,v 1.27 2007/01/09 00:28:08 imp Exp $");
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#else
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__RCSID("$NetBSD: vfwprintf.c,v 1.30 2012/03/27 15:05:42 christos Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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/*
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* Actual {w,}printf innards.
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*/
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#include "namespace.h"
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <limits.h>
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#include <locale.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <wchar.h>
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#include <wctype.h>
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#include "reentrant.h"
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#include "local.h"
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#include "extern.h"
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#include "fvwrite.h"
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#ifndef NARROW
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#define MCHAR_T char
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#define CHAR_T wchar_t
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#define STRLEN(a) wcslen(a)
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#define MEMCHR(a, b, c) wmemchr(a, b, c)
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#define SCONV(a, b) __mbsconv(a, b)
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#define STRCONST(a) L ## a
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#define WDECL(a, b) a ## w ## b
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#define END_OF_FILE WEOF
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#define MULTI 0
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#else
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#define MCHAR_T wchar_t
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#define CHAR_T char
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#define STRLEN(a) strlen(a)
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#define MEMCHR(a, b, c) memchr(a, b, c)
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#define SCONV(a, b) __wcsconv(a, b)
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#define STRCONST(a) a
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#define WDECL(a, b) a ## b
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#define END_OF_FILE EOF
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#define MULTI LONGINT
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#endif
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union arg {
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int intarg;
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u_int uintarg;
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long longarg;
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u_long ulongarg;
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long long longlongarg;
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unsigned long long ulonglongarg;
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ptrdiff_t ptrdiffarg;
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ssize_t ssizearg;
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size_t sizearg;
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intmax_t intmaxarg;
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uintmax_t uintmaxarg;
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void *pvoidarg;
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char *pchararg;
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signed char *pschararg;
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short *pshortarg;
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int *pintarg;
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long *plongarg;
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long long *plonglongarg;
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ptrdiff_t *pptrdiffarg;
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size_t *psizearg;
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intmax_t *pintmaxarg;
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#ifndef NO_FLOATING_POINT
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double doublearg;
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long double longdoublearg;
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#endif
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wint_t wintarg;
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wchar_t *pwchararg;
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};
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/*
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* Type ids for argument type table.
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*/
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enum typeid {
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T_UNUSED = 0, TP_SHORT, T_INT, T_U_INT, TP_INT,
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T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG,
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T_PTRDIFFT, TP_PTRDIFFT, T_SSIZET, T_SIZET, TP_SIZET,
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T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR,
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T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR
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};
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static int __sbprintf(FILE *, const CHAR_T *, va_list);
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static CHAR_T *__ujtoa(uintmax_t, CHAR_T *, int, int, const char *, int,
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char, const char *);
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static CHAR_T *__ultoa(u_long, CHAR_T *, int, int, const char *, int,
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char, const char *);
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#ifndef NARROW
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static CHAR_T *__mbsconv(char *, int);
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static wint_t __xfputwc(CHAR_T, FILE *);
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#else
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static char *__wcsconv(wchar_t *, int);
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static int __sprint(FILE *, struct __suio *);
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#endif
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static int __find_arguments(const CHAR_T *, va_list, union arg **);
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static int __grow_type_table(size_t, enum typeid **, size_t *);
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/*
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* Helper function for `fprintf to unbuffered unix file': creates a
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* temporary buffer. We only work on write-only files; this avoids
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* worries about ungetc buffers and so forth.
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*/
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static int
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__sbprintf(FILE *fp, const CHAR_T *fmt, va_list ap)
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{
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int ret;
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FILE fake;
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struct __sfileext fakeext;
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unsigned char buf[BUFSIZ];
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_DIAGASSERT(fp != NULL);
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_DIAGASSERT(fmt != NULL);
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_FILEEXT_SETUP(&fake, &fakeext);
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memset(WCIO_GET(&fake), 0, sizeof(struct wchar_io_data));
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/* copy the important variables */
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fake._flags = fp->_flags & ~__SNBF;
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fake._file = fp->_file;
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fake._cookie = fp->_cookie;
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fake._write = fp->_write;
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fake._flush = fp->_flush;
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/* set up the buffer */
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fake._bf._base = fake._p = buf;
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fake._bf._size = fake._w = sizeof(buf);
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fake._lbfsize = 0; /* not actually used, but Just In Case */
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/* do the work, then copy any error status */
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ret = WDECL(__vf,printf_unlocked)(&fake, fmt, ap);
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if (ret >= 0 && fflush(&fake))
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ret = END_OF_FILE;
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if (fake._flags & __SERR)
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fp->_flags |= __SERR;
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return ret;
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}
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#ifndef NARROW
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/*
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* Like __fputwc, but handles fake string (__SSTR) files properly.
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* File must already be locked.
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*/
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static wint_t
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__xfputwc(wchar_t wc, FILE *fp)
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{
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static const mbstate_t initial;
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mbstate_t mbs;
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char buf[MB_LEN_MAX];
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struct __suio uio;
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struct __siov iov;
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size_t len;
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if ((fp->_flags & __SSTR) == 0)
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return __fputwc_unlock(wc, fp);
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mbs = initial;
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if ((len = wcrtomb(buf, wc, &mbs)) == (size_t)-1) {
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fp->_flags |= __SERR;
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return END_OF_FILE;
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}
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uio.uio_iov = &iov;
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uio.uio_resid = len;
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uio.uio_iovcnt = 1;
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iov.iov_base = buf;
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iov.iov_len = len;
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return __sfvwrite(fp, &uio) != EOF ? (wint_t)wc : END_OF_FILE;
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}
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#else
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/*
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* Flush out all the vectors defined by the given uio,
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* then reset it so that it can be reused.
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*/
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static int
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__sprint(FILE *fp, struct __suio *uio)
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{
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int err;
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_DIAGASSERT(fp != NULL);
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_DIAGASSERT(uio != NULL);
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if (uio->uio_resid == 0) {
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uio->uio_iovcnt = 0;
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return 0;
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}
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err = __sfvwrite(fp, uio);
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uio->uio_resid = 0;
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uio->uio_iovcnt = 0;
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return err;
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}
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#endif
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/*
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* Macros for converting digits to letters and vice versa
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*/
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#define to_digit(c) ((c) - '0')
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#define is_digit(c) ((unsigned)to_digit(c) <= 9)
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#define to_char(n) (CHAR_T)((n) + '0')
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/*
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* Convert an unsigned long to ASCII for printf purposes, returning
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* a pointer to the first character of the string representation.
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* Octal numbers can be forced to have a leading zero; hex numbers
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* use the given digits.
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*/
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static CHAR_T *
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__ultoa(u_long val, CHAR_T *endp, int base, int octzero, const char *xdigs,
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int needgrp, char thousep, const char *grp)
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{
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CHAR_T *cp = endp;
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long sval;
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int ndig;
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/*
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* Handle the three cases separately, in the hope of getting
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* better/faster code.
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*/
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switch (base) {
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case 10:
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if (val < 10) { /* many numbers are 1 digit */
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*--cp = to_char(val);
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return cp;
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}
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ndig = 0;
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/*
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* On many machines, unsigned arithmetic is harder than
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* signed arithmetic, so we do at most one unsigned mod and
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* divide; this is sufficient to reduce the range of
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* the incoming value to where signed arithmetic works.
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*/
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if (val > LONG_MAX) {
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*--cp = to_char(val % 10);
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ndig++;
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sval = val / 10;
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} else
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sval = val;
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do {
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*--cp = to_char(sval % 10);
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ndig++;
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/*
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* If (*grp == CHAR_MAX) then no more grouping
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* should be performed.
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*/
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if (needgrp && ndig == *grp
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&& (unsigned char)*grp != (unsigned char)CHAR_MAX
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&& sval > 9) {
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*--cp = thousep;
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ndig = 0;
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/*
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* If (*(grp+1) == '\0') then we have to
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* use *grp character (last grouping rule)
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* for all next cases
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*/
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if (*(grp+1) != '\0')
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grp++;
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}
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sval /= 10;
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} while (sval != 0);
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break;
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case 8:
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do {
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*--cp = to_char(val & 7);
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val >>= 3;
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} while (val);
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if (octzero && *cp != '0')
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*--cp = '0';
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break;
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case 16:
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do {
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*--cp = xdigs[(size_t)val & 15];
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val >>= 4;
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} while (val);
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break;
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default: /* oops */
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abort();
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}
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return cp;
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}
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|
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/* Identical to __ultoa, but for intmax_t. */
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static CHAR_T *
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__ujtoa(uintmax_t val, CHAR_T *endp, int base, int octzero,
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const char *xdigs, int needgrp, char thousep, const char *grp)
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{
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CHAR_T *cp = endp;
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intmax_t sval;
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int ndig;
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|
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/* quick test for small values; __ultoa is typically much faster */
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/* (perhaps instead we should run until small, then call __ultoa?) */
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if (val <= ULONG_MAX)
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return __ultoa((u_long)val, endp, base, octzero, xdigs,
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needgrp, thousep, grp);
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switch (base) {
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case 10:
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if (val < 10) {
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*--cp = to_char(val % 10);
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return cp;
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}
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ndig = 0;
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if (val > INTMAX_MAX) {
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*--cp = to_char(val % 10);
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ndig++;
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sval = val / 10;
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} else
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sval = val;
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do {
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*--cp = to_char(sval % 10);
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ndig++;
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/*
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* If (*grp == CHAR_MAX) then no more grouping
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* should be performed.
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*/
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if (needgrp
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&& (unsigned char)*grp != (unsigned char)CHAR_MAX
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&& ndig == *grp
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&& sval > 9) {
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*--cp = thousep;
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ndig = 0;
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/*
|
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* If (*(grp+1) == '\0') then we have to
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* use *grp character (last grouping rule)
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* for all next cases
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*/
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if (*(grp+1) != '\0')
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grp++;
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}
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sval /= 10;
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} while (sval != 0);
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break;
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|
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case 8:
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do {
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*--cp = to_char(val & 7);
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val >>= 3;
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} while (val);
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if (octzero && *cp != '0')
|
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*--cp = '0';
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break;
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|
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case 16:
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do {
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*--cp = xdigs[(size_t)val & 15];
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val >>= 4;
|
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} while (val);
|
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break;
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|
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default:
|
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abort();
|
|
}
|
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return cp;
|
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}
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|
|
#ifndef NARROW
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|
/*
|
|
* Convert a multibyte character string argument for the %s format to a wide
|
|
* string representation. ``prec'' specifies the maximum number of bytes
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* to output. If ``prec'' is greater than or equal to zero, we can't assume
|
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* that the multibyte char. string ends in a null character.
|
|
*/
|
|
static wchar_t *
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__mbsconv(char *mbsarg, int prec)
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|
{
|
|
static const mbstate_t initial;
|
|
mbstate_t mbs;
|
|
wchar_t *convbuf, *wcp;
|
|
const char *p;
|
|
size_t insize, nchars, nconv;
|
|
|
|
if (mbsarg == NULL)
|
|
return NULL;
|
|
|
|
/*
|
|
* Supplied argument is a multibyte string; convert it to wide
|
|
* characters first.
|
|
*/
|
|
if (prec >= 0) {
|
|
/*
|
|
* String is not guaranteed to be NUL-terminated. Find the
|
|
* number of characters to print.
|
|
*/
|
|
p = mbsarg;
|
|
insize = nchars = nconv = 0;
|
|
mbs = initial;
|
|
while (nchars != (size_t)prec) {
|
|
nconv = mbrlen(p, MB_CUR_MAX, &mbs);
|
|
if (nconv == 0 || nconv == (size_t)-1 ||
|
|
nconv == (size_t)-2)
|
|
break;
|
|
p += nconv;
|
|
nchars++;
|
|
insize += nconv;
|
|
}
|
|
if (nconv == (size_t)-1 || nconv == (size_t)-2)
|
|
return NULL;
|
|
} else
|
|
insize = strlen(mbsarg);
|
|
|
|
/*
|
|
* Allocate buffer for the result and perform the conversion,
|
|
* converting at most `size' bytes of the input multibyte string to
|
|
* wide characters for printing.
|
|
*/
|
|
convbuf = malloc((insize + 1) * sizeof(*convbuf));
|
|
if (convbuf == NULL)
|
|
return NULL;
|
|
wcp = convbuf;
|
|
p = mbsarg;
|
|
mbs = initial;
|
|
nconv = 0;
|
|
while (insize != 0) {
|
|
nconv = mbrtowc(wcp, p, insize, &mbs);
|
|
if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2)
|
|
break;
|
|
wcp++;
|
|
p += nconv;
|
|
insize -= nconv;
|
|
}
|
|
if (nconv == (size_t)-1 || nconv == (size_t)-2) {
|
|
free(convbuf);
|
|
return NULL;
|
|
}
|
|
*wcp = L'\0';
|
|
|
|
return convbuf;
|
|
}
|
|
#else
|
|
/*
|
|
* Convert a wide-character string argument for the %ls format to a multibyte
|
|
* string representation. If not -1, prec specifies the maximum number of
|
|
* bytes to output, and also means that we can't assume that the wide-char.
|
|
* string ends is null-terminated.
|
|
*/
|
|
static char *
|
|
__wcsconv(wchar_t *wcsarg, int prec)
|
|
{
|
|
static const mbstate_t initial;
|
|
mbstate_t mbs;
|
|
char buf[MB_LEN_MAX];
|
|
wchar_t *p;
|
|
char *convbuf;
|
|
size_t clen, nbytes;
|
|
|
|
/* Allocate space for the maximum number of bytes we could output. */
|
|
if (prec < 0) {
|
|
p = wcsarg;
|
|
mbs = initial;
|
|
nbytes = wcsrtombs(NULL, (void *)&p, 0, &mbs);
|
|
if (nbytes == (size_t)-1)
|
|
return NULL;
|
|
} else {
|
|
/*
|
|
* Optimisation: if the output precision is small enough,
|
|
* just allocate enough memory for the maximum instead of
|
|
* scanning the string.
|
|
*/
|
|
if (prec < 128)
|
|
nbytes = prec;
|
|
else {
|
|
nbytes = 0;
|
|
p = wcsarg;
|
|
mbs = initial;
|
|
for (;;) {
|
|
clen = wcrtomb(buf, *p++, &mbs);
|
|
if (clen == 0 || clen == (size_t)-1 ||
|
|
nbytes + clen > (size_t)prec)
|
|
break;
|
|
nbytes += clen;
|
|
}
|
|
}
|
|
}
|
|
if ((convbuf = malloc(nbytes + 1)) == NULL)
|
|
return NULL;
|
|
|
|
/* Fill the output buffer. */
|
|
p = wcsarg;
|
|
mbs = initial;
|
|
if ((nbytes = wcsrtombs(convbuf, (void *)&p,
|
|
nbytes, &mbs)) == (size_t)-1) {
|
|
free(convbuf);
|
|
return NULL;
|
|
}
|
|
convbuf[nbytes] = '\0';
|
|
return convbuf;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* MT-safe version
|
|
*/
|
|
int
|
|
WDECL(vf,printf)(FILE * __restrict fp, const CHAR_T * __restrict fmt0, va_list ap)
|
|
{
|
|
int ret;
|
|
|
|
FLOCKFILE(fp);
|
|
ret = WDECL(__vf,printf_unlocked)(fp, fmt0, ap);
|
|
FUNLOCKFILE(fp);
|
|
return ret;
|
|
}
|
|
|
|
#ifndef NO_FLOATING_POINT
|
|
|
|
#include <float.h>
|
|
#include <math.h>
|
|
#include "floatio.h"
|
|
|
|
#define DEFPREC 6
|
|
|
|
static int exponent(CHAR_T *, int, int);
|
|
#ifndef WIDE_DOUBLE
|
|
static char *cvt(double, int, int, char *, int *, int, int *);
|
|
#endif
|
|
|
|
#endif /* !NO_FLOATING_POINT */
|
|
|
|
/*
|
|
* The size of the buffer we use as scratch space for integer
|
|
* conversions, among other things. Technically, we would need the
|
|
* most space for base 10 conversions with thousands' grouping
|
|
* characters between each pair of digits. 100 bytes is a
|
|
* conservative overestimate even for a 128-bit uintmax_t.
|
|
*/
|
|
#define BUF 100
|
|
|
|
#define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */
|
|
|
|
/*
|
|
* Flags used during conversion.
|
|
*/
|
|
#define ALT 0x001 /* alternate form */
|
|
#define LADJUST 0x004 /* left adjustment */
|
|
#define LONGDBL 0x008 /* long double */
|
|
#define LONGINT 0x010 /* long integer */
|
|
#define LLONGINT 0x020 /* long long integer */
|
|
#define SHORTINT 0x040 /* short integer */
|
|
#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */
|
|
#define FPT 0x100 /* Floating point number */
|
|
#define GROUPING 0x200 /* use grouping ("'" flag) */
|
|
/* C99 additional size modifiers: */
|
|
#define SIZET 0x400 /* size_t */
|
|
#define PTRDIFFT 0x800 /* ptrdiff_t */
|
|
#define INTMAXT 0x1000 /* intmax_t */
|
|
#define CHARINT 0x2000 /* print char using int format */
|
|
|
|
/*
|
|
* Non-MT-safe version
|
|
*/
|
|
int
|
|
WDECL(__vf,printf_unlocked)(FILE *fp, const CHAR_T *fmt0, va_list ap)
|
|
{
|
|
CHAR_T *fmt; /* format string */
|
|
int ch; /* character from fmt */
|
|
int n, n2; /* handy integer (short term usage) */
|
|
CHAR_T *cp; /* handy char pointer (short term usage) */
|
|
int flags; /* flags as above */
|
|
int ret; /* return value accumulator */
|
|
int width; /* width from format (%8d), or 0 */
|
|
int prec; /* precision from format; <0 for N/A */
|
|
CHAR_T sign; /* sign prefix (' ', '+', '-', or \0) */
|
|
char thousands_sep; /* locale specific thousands separator */
|
|
const char *grouping; /* locale specific numeric grouping rules */
|
|
#ifndef NO_FLOATING_POINT
|
|
/*
|
|
* We can decompose the printed representation of floating
|
|
* point numbers into several parts, some of which may be empty:
|
|
*
|
|
* [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ
|
|
* A B ---C--- D E F
|
|
*
|
|
* A: 'sign' holds this value if present; '\0' otherwise
|
|
* B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal
|
|
* C: cp points to the string MMMNNN. Leading and trailing
|
|
* zeros are not in the string and must be added.
|
|
* D: expchar holds this character; '\0' if no exponent, e.g. %f
|
|
* F: at least two digits for decimal, at least one digit for hex
|
|
*/
|
|
char *decimal_point; /* locale specific decimal point */
|
|
#ifdef WIDE_DOUBLE
|
|
int signflag; /* true if float is negative */
|
|
union { /* floating point arguments %[aAeEfFgG] */
|
|
double dbl;
|
|
long double ldbl;
|
|
} fparg;
|
|
char *dtoaend; /* pointer to end of converted digits */
|
|
#else
|
|
double _double; /* double precision arguments %[eEfgG] */
|
|
char softsign; /* temporary negative sign for floats */
|
|
#endif
|
|
char *dtoaresult; /* buffer allocated by dtoa */
|
|
int expt; /* integer value of exponent */
|
|
char expchar; /* exponent character: [eEpP\0] */
|
|
int expsize; /* character count for expstr */
|
|
int lead; /* sig figs before decimal or group sep */
|
|
int ndig; /* actual number of digits returned by dtoa */
|
|
CHAR_T expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */
|
|
int nseps; /* number of group separators with ' */
|
|
int nrepeats; /* number of repeats of the last group */
|
|
#endif
|
|
u_long ulval; /* integer arguments %[diouxX] */
|
|
uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */
|
|
int base; /* base for [diouxX] conversion */
|
|
int dprec; /* a copy of prec if [diouxX], 0 otherwise */
|
|
int realsz; /* field size expanded by dprec, sign, etc */
|
|
int size; /* size of converted field or string */
|
|
int prsize; /* max size of printed field */
|
|
const char *xdigs; /* digits for %[xX] conversion */
|
|
#ifdef NARROW
|
|
#define NIOV 8
|
|
struct __siov *iovp; /* for PRINT macro */
|
|
struct __suio uio; /* output information: summary */
|
|
struct __siov iov[NIOV];/* ... and individual io vectors */
|
|
#else
|
|
int n3;
|
|
#endif
|
|
CHAR_T buf[BUF]; /* buffer with space for digits of uintmax_t */
|
|
CHAR_T ox[2]; /* space for 0x hex-prefix */
|
|
union arg *argtable; /* args, built due to positional arg */
|
|
union arg statargtable [STATIC_ARG_TBL_SIZE];
|
|
int nextarg; /* 1-based argument index */
|
|
va_list orgap; /* original argument pointer */
|
|
CHAR_T *convbuf; /* multibyte to wide conversion result */
|
|
|
|
/*
|
|
* Choose PADSIZE to trade efficiency vs. size. If larger printf
|
|
* fields occur frequently, increase PADSIZE and make the initialisers
|
|
* below longer.
|
|
*/
|
|
#define PADSIZE 16 /* pad chunk size */
|
|
static CHAR_T blanks[PADSIZE] =
|
|
{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
|
|
static CHAR_T zeroes[PADSIZE] =
|
|
{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
|
|
|
|
static const char xdigs_lower[16] = "0123456789abcdef";
|
|
static const char xdigs_upper[16] = "0123456789ABCDEF";
|
|
|
|
/*
|
|
* BEWARE, these `goto error' on error, PRINT uses `n2' and
|
|
* PAD uses `n'.
|
|
*/
|
|
#ifndef NARROW
|
|
#define PRINT(ptr, len) do { \
|
|
for (n3 = 0; n3 < (len); n3++) \
|
|
__xfputwc((ptr)[n3], fp); \
|
|
} while (/*CONSTCOND*/0)
|
|
#define FLUSH()
|
|
#else
|
|
#define PRINT(ptr, len) do { \
|
|
iovp->iov_base = __UNCONST(ptr); \
|
|
iovp->iov_len = (len); \
|
|
uio.uio_resid += (len); \
|
|
iovp++; \
|
|
if (++uio.uio_iovcnt >= NIOV) { \
|
|
if (__sprint(fp, &uio)) \
|
|
goto error; \
|
|
iovp = iov; \
|
|
} \
|
|
} while (/*CONSTCOND*/0)
|
|
#define FLUSH() do { \
|
|
if (uio.uio_resid && __sprint(fp, &uio)) \
|
|
goto error; \
|
|
uio.uio_iovcnt = 0; \
|
|
iovp = iov; \
|
|
} while (/*CONSTCOND*/0)
|
|
#endif /* NARROW */
|
|
|
|
#define PAD(howmany, with) do { \
|
|
if ((n = (howmany)) > 0) { \
|
|
while (n > PADSIZE) { \
|
|
PRINT(with, PADSIZE); \
|
|
n -= PADSIZE; \
|
|
} \
|
|
PRINT(with, n); \
|
|
} \
|
|
} while (/*CONSTCOND*/0)
|
|
#define PRINTANDPAD(p, ep, len, with) do { \
|
|
ptrdiff_t td = (ep) - (p); \
|
|
_DIAGASSERT(__type_fit(int, td)); \
|
|
n2 = (int)td; \
|
|
if (n2 > (len)) \
|
|
n2 = (len); \
|
|
if (n2 > 0) \
|
|
PRINT((p), n2); \
|
|
PAD((len) - (n2 > 0 ? n2 : 0), (with)); \
|
|
} while(/*CONSTCOND*/0)
|
|
|
|
/*
|
|
* Get the argument indexed by nextarg. If the argument table is
|
|
* built, use it to get the argument. If its not, get the next
|
|
* argument (and arguments must be gotten sequentially).
|
|
*/
|
|
#define GETARG(type) \
|
|
((/*CONSTCOND*/argtable != NULL) ? *((type*)(void*)(&argtable[nextarg++])) : \
|
|
(nextarg++, va_arg(ap, type)))
|
|
|
|
/*
|
|
* To extend shorts properly, we need both signed and unsigned
|
|
* argument extraction methods.
|
|
*/
|
|
#define SARG() \
|
|
(flags&LONGINT ? GETARG(long) : \
|
|
flags&SHORTINT ? (long)(short)GETARG(int) : \
|
|
flags&CHARINT ? (long)(signed char)GETARG(int) : \
|
|
(long)GETARG(int))
|
|
#define UARG() \
|
|
(flags&LONGINT ? GETARG(u_long) : \
|
|
flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \
|
|
flags&CHARINT ? (u_long)(u_char)GETARG(int) : \
|
|
(u_long)GETARG(u_int))
|
|
#define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT)
|
|
#define SJARG() \
|
|
(flags&INTMAXT ? GETARG(intmax_t) : \
|
|
flags&SIZET ? (intmax_t)GETARG(ssize_t) : \
|
|
flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \
|
|
(intmax_t)GETARG(long long))
|
|
#define UJARG() \
|
|
(flags&INTMAXT ? GETARG(uintmax_t) : \
|
|
flags&SIZET ? (uintmax_t)GETARG(size_t) : \
|
|
flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \
|
|
(uintmax_t)GETARG(unsigned long long))
|
|
|
|
/*
|
|
* Get * arguments, including the form *nn$. Preserve the nextarg
|
|
* that the argument can be gotten once the type is determined.
|
|
*/
|
|
#define GETASTER(val) \
|
|
n2 = 0; \
|
|
cp = fmt; \
|
|
while (is_digit(*cp)) { \
|
|
n2 = 10 * n2 + to_digit(*cp); \
|
|
cp++; \
|
|
} \
|
|
if (*cp == '$') { \
|
|
int hold = nextarg; \
|
|
if (argtable == NULL) { \
|
|
argtable = statargtable; \
|
|
if (__find_arguments(fmt0, orgap, &argtable) == -1) \
|
|
goto oomem; \
|
|
} \
|
|
nextarg = n2; \
|
|
val = GETARG (int); \
|
|
nextarg = hold; \
|
|
fmt = ++cp; \
|
|
} else { \
|
|
val = GETARG (int); \
|
|
}
|
|
|
|
_DIAGASSERT(fp != NULL);
|
|
_DIAGASSERT(fmt0 != NULL);
|
|
|
|
_SET_ORIENTATION(fp, -1);
|
|
|
|
ndig = -1; /* XXX gcc */
|
|
|
|
thousands_sep = '\0';
|
|
grouping = NULL;
|
|
#ifndef NO_FLOATING_POINT
|
|
decimal_point = localeconv()->decimal_point;
|
|
expsize = 0; /* XXXGCC -Wuninitialized [sh3,m68000] */
|
|
#endif
|
|
convbuf = NULL;
|
|
/* sorry, f{w,}printf(read_only_file, L"") returns {W,}EOF, not 0 */
|
|
if (cantwrite(fp)) {
|
|
errno = EBADF;
|
|
return END_OF_FILE;
|
|
}
|
|
|
|
/* optimise fprintf(stderr) (and other unbuffered Unix files) */
|
|
if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
|
|
__sfileno(fp) != -1)
|
|
return __sbprintf(fp, fmt0, ap);
|
|
|
|
fmt = (CHAR_T *)__UNCONST(fmt0);
|
|
argtable = NULL;
|
|
nextarg = 1;
|
|
va_copy(orgap, ap);
|
|
#ifdef NARROW
|
|
uio.uio_iov = iovp = iov;
|
|
uio.uio_resid = 0;
|
|
uio.uio_iovcnt = 0;
|
|
#endif
|
|
ret = 0;
|
|
|
|
/*
|
|
* Scan the format for conversions (`%' character).
|
|
*/
|
|
for (;;) {
|
|
const CHAR_T *result;
|
|
|
|
for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
|
|
continue;
|
|
_DIAGASSERT(__type_fit(int, fmt - cp));
|
|
if ((n = (int)(fmt - cp)) != 0) {
|
|
if ((unsigned)ret + n > INT_MAX) {
|
|
ret = END_OF_FILE;
|
|
goto error;
|
|
}
|
|
PRINT(cp, n);
|
|
ret += n;
|
|
}
|
|
if (ch == '\0')
|
|
goto done;
|
|
fmt++; /* skip over '%' */
|
|
|
|
flags = 0;
|
|
dprec = 0;
|
|
width = 0;
|
|
prec = -1;
|
|
sign = '\0';
|
|
ox[1] = '\0';
|
|
expchar = '\0';
|
|
lead = 0;
|
|
nseps = nrepeats = 0;
|
|
ulval = 0;
|
|
ujval = 0;
|
|
xdigs = NULL;
|
|
|
|
rflag: ch = *fmt++;
|
|
reswitch: switch (ch) {
|
|
case ' ':
|
|
/*-
|
|
* ``If the space and + flags both appear, the space
|
|
* flag will be ignored.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
if (!sign)
|
|
sign = ' ';
|
|
goto rflag;
|
|
case '#':
|
|
flags |= ALT;
|
|
goto rflag;
|
|
case '*':
|
|
/*-
|
|
* ``A negative field width argument is taken as a
|
|
* - flag followed by a positive field width.''
|
|
* -- ANSI X3J11
|
|
* They don't exclude field widths read from args.
|
|
*/
|
|
GETASTER (width);
|
|
if (width >= 0)
|
|
goto rflag;
|
|
width = -width;
|
|
/* FALLTHROUGH */
|
|
case '-':
|
|
flags |= LADJUST;
|
|
goto rflag;
|
|
case '+':
|
|
sign = '+';
|
|
goto rflag;
|
|
case '\'':
|
|
flags |= GROUPING;
|
|
thousands_sep = *(localeconv()->thousands_sep);
|
|
grouping = localeconv()->grouping;
|
|
/* If the locale doesn't define the above, use sane
|
|
* defaults - otherwise silly things happen! */
|
|
if (thousands_sep == 0)
|
|
thousands_sep = ',';
|
|
if (!grouping || !*grouping)
|
|
grouping = "\3";
|
|
goto rflag;
|
|
case '.':
|
|
if ((ch = *fmt++) == '*') {
|
|
GETASTER (prec);
|
|
goto rflag;
|
|
}
|
|
prec = 0;
|
|
while (is_digit(ch)) {
|
|
prec = 10 * prec + to_digit(ch);
|
|
ch = *fmt++;
|
|
}
|
|
goto reswitch;
|
|
case '0':
|
|
/*-
|
|
* ``Note that 0 is taken as a flag, not as the
|
|
* beginning of a field width.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
flags |= ZEROPAD;
|
|
goto rflag;
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
n = 0;
|
|
do {
|
|
n = 10 * n + to_digit(ch);
|
|
ch = *fmt++;
|
|
} while (is_digit(ch));
|
|
if (ch == '$') {
|
|
nextarg = n;
|
|
if (argtable == NULL) {
|
|
argtable = statargtable;
|
|
if (__find_arguments(fmt0, orgap,
|
|
&argtable) == -1)
|
|
goto oomem;
|
|
}
|
|
goto rflag;
|
|
}
|
|
width = n;
|
|
goto reswitch;
|
|
#ifndef NO_FLOATING_POINT
|
|
case 'L':
|
|
flags |= LONGDBL;
|
|
goto rflag;
|
|
#endif
|
|
case 'h':
|
|
if (flags & SHORTINT) {
|
|
flags &= ~SHORTINT;
|
|
flags |= CHARINT;
|
|
} else
|
|
flags |= SHORTINT;
|
|
goto rflag;
|
|
case 'j':
|
|
flags |= INTMAXT;
|
|
goto rflag;
|
|
case 'l':
|
|
if (flags & LONGINT) {
|
|
flags &= ~LONGINT;
|
|
flags |= LLONGINT;
|
|
} else
|
|
flags |= LONGINT;
|
|
goto rflag;
|
|
case 'q':
|
|
flags |= LLONGINT; /* not necessarily */
|
|
goto rflag;
|
|
case 't':
|
|
flags |= PTRDIFFT;
|
|
goto rflag;
|
|
case 'z':
|
|
flags |= SIZET;
|
|
goto rflag;
|
|
case 'C':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'c':
|
|
#ifdef NARROW
|
|
if (flags & LONGINT) {
|
|
static const mbstate_t initial;
|
|
mbstate_t mbs;
|
|
size_t mbseqlen;
|
|
|
|
mbs = initial;
|
|
mbseqlen = wcrtomb(buf,
|
|
(wchar_t)GETARG(wint_t), &mbs);
|
|
if (mbseqlen == (size_t)-1) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
size = (int)mbseqlen;
|
|
} else {
|
|
*buf = GETARG(int);
|
|
size = 1;
|
|
}
|
|
#else
|
|
if (flags & LONGINT)
|
|
*buf = (wchar_t)GETARG(wint_t);
|
|
else
|
|
*buf = (wchar_t)btowc(GETARG(int));
|
|
size = 1;
|
|
#endif
|
|
result = buf;
|
|
sign = '\0';
|
|
break;
|
|
case 'D':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'd':
|
|
case 'i':
|
|
if (flags & INTMAX_SIZE) {
|
|
ujval = SJARG();
|
|
if ((intmax_t)ujval < 0) {
|
|
ujval = -ujval;
|
|
sign = '-';
|
|
}
|
|
} else {
|
|
ulval = SARG();
|
|
if ((long)ulval < 0) {
|
|
ulval = -ulval;
|
|
sign = '-';
|
|
}
|
|
}
|
|
base = 10;
|
|
goto number;
|
|
#ifndef NO_FLOATING_POINT
|
|
#ifdef WIDE_DOUBLE
|
|
case 'a':
|
|
case 'A':
|
|
if (ch == 'a') {
|
|
ox[1] = 'x';
|
|
xdigs = xdigs_lower;
|
|
expchar = 'p';
|
|
} else {
|
|
ox[1] = 'X';
|
|
xdigs = xdigs_upper;
|
|
expchar = 'P';
|
|
}
|
|
if (prec >= 0)
|
|
prec++;
|
|
if (flags & LONGDBL) {
|
|
fparg.ldbl = GETARG(long double);
|
|
dtoaresult =
|
|
__hldtoa(fparg.ldbl, xdigs, prec,
|
|
&expt, &signflag, &dtoaend);
|
|
} else {
|
|
fparg.dbl = GETARG(double);
|
|
dtoaresult =
|
|
__hdtoa(fparg.dbl, xdigs, prec,
|
|
&expt, &signflag, &dtoaend);
|
|
}
|
|
if (dtoaresult == NULL)
|
|
goto oomem;
|
|
|
|
if (prec < 0) {
|
|
_DIAGASSERT(__type_fit(int,
|
|
dtoaend - dtoaresult));
|
|
prec = (int)(dtoaend - dtoaresult);
|
|
}
|
|
if (expt == INT_MAX)
|
|
ox[1] = '\0';
|
|
_DIAGASSERT(__type_fit(int, dtoaend - dtoaresult));
|
|
ndig = (int)(dtoaend - dtoaresult);
|
|
if (convbuf != NULL)
|
|
free(convbuf);
|
|
#ifndef NARROW
|
|
result = convbuf = __mbsconv(dtoaresult, -1);
|
|
#else
|
|
/*XXX inefficient*/
|
|
result = convbuf = strdup(dtoaresult);
|
|
#endif
|
|
if (result == NULL)
|
|
goto oomem;
|
|
__freedtoa(dtoaresult);
|
|
goto fp_common;
|
|
case 'e':
|
|
case 'E':
|
|
expchar = ch;
|
|
if (prec < 0) /* account for digit before decpt */
|
|
prec = DEFPREC + 1;
|
|
else
|
|
prec++;
|
|
goto fp_begin;
|
|
case 'f':
|
|
case 'F':
|
|
expchar = '\0';
|
|
goto fp_begin;
|
|
case 'g':
|
|
case 'G':
|
|
expchar = ch - ('g' - 'e');
|
|
if (prec == 0)
|
|
prec = 1;
|
|
fp_begin:
|
|
if (prec < 0)
|
|
prec = DEFPREC;
|
|
if (flags & LONGDBL) {
|
|
fparg.ldbl = GETARG(long double);
|
|
dtoaresult =
|
|
__ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec,
|
|
&expt, &signflag, &dtoaend);
|
|
} else {
|
|
fparg.dbl = GETARG(double);
|
|
dtoaresult =
|
|
__dtoa(fparg.dbl, expchar ? 2 : 3, prec,
|
|
&expt, &signflag, &dtoaend);
|
|
if (expt == 9999)
|
|
expt = INT_MAX;
|
|
}
|
|
if (dtoaresult == NULL)
|
|
goto oomem;
|
|
_DIAGASSERT(__type_fit(int, dtoaend - dtoaresult));
|
|
ndig = (int)(dtoaend - dtoaresult);
|
|
if (convbuf != NULL)
|
|
free(convbuf);
|
|
#ifndef NARROW
|
|
result = convbuf = __mbsconv(dtoaresult, -1);
|
|
#else
|
|
/*XXX inefficient*/
|
|
result = convbuf = strdup(dtoaresult);
|
|
#endif
|
|
if (result == NULL)
|
|
goto oomem;
|
|
__freedtoa(dtoaresult);
|
|
fp_common:
|
|
if (signflag)
|
|
sign = '-';
|
|
if (expt == INT_MAX) { /* inf or nan */
|
|
if (*result == 'N') {
|
|
result = (ch >= 'a') ? STRCONST("nan") :
|
|
STRCONST("NAN");
|
|
sign = '\0';
|
|
} else
|
|
result = (ch >= 'a') ? STRCONST("inf") :
|
|
STRCONST("INF");
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
#else
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'F':
|
|
case 'g':
|
|
case 'G':
|
|
if (prec == -1) {
|
|
prec = DEFPREC;
|
|
} else if ((ch == 'g' || ch == 'G') && prec == 0) {
|
|
prec = 1;
|
|
}
|
|
|
|
if (flags & LONGDBL) {
|
|
_double = (double) GETARG(long double);
|
|
} else {
|
|
_double = GETARG(double);
|
|
}
|
|
|
|
/* do this before tricky precision changes */
|
|
if (isinf(_double)) {
|
|
if (_double < 0)
|
|
sign = '-';
|
|
if (ch == 'E' || ch == 'F' || ch == 'G')
|
|
result = STRCONST("INF");
|
|
else
|
|
result = STRCONST("inf");
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
if (isnan(_double)) {
|
|
if (ch == 'E' || ch == 'F' || ch == 'G')
|
|
result = STRCONST("NAN");
|
|
else
|
|
result = STRCONST("nan");
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
|
|
flags |= FPT;
|
|
dtoaresult = cvt(_double, prec, flags, &softsign,
|
|
&expt, ch, &ndig);
|
|
if (dtoaresult == NULL)
|
|
goto oomem;
|
|
if (convbuf != NULL)
|
|
free(convbuf);
|
|
#ifndef NARROW
|
|
result = convbuf = __mbsconv(dtoaresult, -1);
|
|
#else
|
|
/*XXX inefficient*/
|
|
result = convbuf = strdup(dtoaresult);
|
|
#endif
|
|
if (result == NULL)
|
|
goto oomem;
|
|
__freedtoa(dtoaresult);
|
|
if (softsign)
|
|
sign = '-';
|
|
#endif
|
|
flags |= FPT;
|
|
if (ch == 'g' || ch == 'G') {
|
|
if (expt > -4 && expt <= prec) {
|
|
/* Make %[gG] smell like %[fF] */
|
|
expchar = '\0';
|
|
if (flags & ALT)
|
|
prec -= expt;
|
|
else
|
|
prec = ndig - expt;
|
|
if (prec < 0)
|
|
prec = 0;
|
|
} else {
|
|
/*
|
|
* Make %[gG] smell like %[eE], but
|
|
* trim trailing zeroes if no # flag.
|
|
*/
|
|
if (!(flags & ALT))
|
|
prec = ndig;
|
|
}
|
|
}
|
|
if (expchar) {
|
|
expsize = exponent(expstr, expt - 1, expchar);
|
|
size = expsize + prec;
|
|
if (prec > 1 || flags & ALT)
|
|
++size;
|
|
} else {
|
|
/* space for digits before decimal point */
|
|
if (expt > 0)
|
|
size = expt;
|
|
else /* "0" */
|
|
size = 1;
|
|
/* space for decimal pt and following digits */
|
|
if (prec || flags & ALT)
|
|
size += prec + 1;
|
|
if (grouping && expt > 0) {
|
|
/* space for thousands' grouping */
|
|
nseps = nrepeats = 0;
|
|
lead = expt;
|
|
while ((unsigned char)*grouping
|
|
!= (unsigned char)CHAR_MAX) {
|
|
if (lead <= *grouping)
|
|
break;
|
|
lead -= *grouping;
|
|
if (*(grouping+1)) {
|
|
nseps++;
|
|
grouping++;
|
|
} else
|
|
nrepeats++;
|
|
}
|
|
size += nseps + nrepeats;
|
|
} else
|
|
lead = expt;
|
|
}
|
|
break;
|
|
#endif /* !NO_FLOATING_POINT */
|
|
case 'n':
|
|
/*
|
|
* Assignment-like behavior is specified if the
|
|
* value overflows or is otherwise unrepresentable.
|
|
* C99 says to use `signed char' for %hhn conversions.
|
|
*/
|
|
if (flags & LLONGINT)
|
|
*GETARG(long long *) = ret;
|
|
else if (flags & SIZET)
|
|
*GETARG(ssize_t *) = (ssize_t)ret;
|
|
else if (flags & PTRDIFFT)
|
|
*GETARG(ptrdiff_t *) = ret;
|
|
else if (flags & INTMAXT)
|
|
*GETARG(intmax_t *) = ret;
|
|
else if (flags & LONGINT)
|
|
*GETARG(long *) = ret;
|
|
else if (flags & SHORTINT)
|
|
*GETARG(short *) = ret;
|
|
else if (flags & CHARINT)
|
|
*GETARG(signed char *) = ret;
|
|
else
|
|
*GETARG(int *) = ret;
|
|
continue; /* no output */
|
|
case 'O':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'o':
|
|
if (flags & INTMAX_SIZE)
|
|
ujval = UJARG();
|
|
else
|
|
ulval = UARG();
|
|
base = 8;
|
|
goto nosign;
|
|
case 'p':
|
|
/*-
|
|
* ``The argument shall be a pointer to void. The
|
|
* value of the pointer is converted to a sequence
|
|
* of printable characters, in an implementation-
|
|
* defined manner.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
ujval = (uintmax_t)(uintptr_t)GETARG(void *);
|
|
base = 16;
|
|
xdigs = xdigs_lower;
|
|
flags = flags | INTMAXT;
|
|
ox[1] = 'x';
|
|
goto nosign;
|
|
case 'S':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 's':
|
|
if ((flags & LONGINT) != MULTI) {
|
|
if ((result = GETARG(CHAR_T *)) == NULL)
|
|
result = STRCONST("(null)");
|
|
} else {
|
|
MCHAR_T *mc;
|
|
|
|
if (convbuf != NULL)
|
|
free(convbuf);
|
|
if ((mc = GETARG(MCHAR_T *)) == NULL)
|
|
result = STRCONST("(null)");
|
|
else {
|
|
convbuf = SCONV(mc, prec);
|
|
if (convbuf == NULL) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
result = convbuf;
|
|
}
|
|
}
|
|
|
|
if (prec >= 0) {
|
|
/*
|
|
* can't use STRLEN; can only look for the
|
|
* NUL in the first `prec' characters, and
|
|
* STRLEN() will go further.
|
|
*/
|
|
CHAR_T *p = MEMCHR(result, 0, (size_t)prec);
|
|
|
|
if (p != NULL) {
|
|
_DIAGASSERT(__type_fit(int,
|
|
p - result));
|
|
size = (int)(p - result);
|
|
if (size > prec)
|
|
size = prec;
|
|
} else
|
|
size = prec;
|
|
} else {
|
|
size_t rlen = STRLEN(result);
|
|
_DIAGASSERT(__type_fit(int, rlen));
|
|
size = (int)rlen;
|
|
}
|
|
sign = '\0';
|
|
break;
|
|
case 'U':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'u':
|
|
if (flags & INTMAX_SIZE)
|
|
ujval = UJARG();
|
|
else
|
|
ulval = UARG();
|
|
base = 10;
|
|
goto nosign;
|
|
case 'X':
|
|
xdigs = xdigs_upper;
|
|
goto hex;
|
|
case 'x':
|
|
xdigs = xdigs_lower;
|
|
hex:
|
|
if (flags & INTMAX_SIZE)
|
|
ujval = UJARG();
|
|
else
|
|
ulval = UARG();
|
|
base = 16;
|
|
/* leading 0x/X only if non-zero */
|
|
if (flags & ALT &&
|
|
(flags & INTMAX_SIZE ? ujval != 0 : ulval != 0))
|
|
ox[1] = ch;
|
|
|
|
flags &= ~GROUPING;
|
|
/* unsigned conversions */
|
|
nosign: sign = '\0';
|
|
/*-
|
|
* ``... diouXx conversions ... if a precision is
|
|
* specified, the 0 flag will be ignored.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
number: if ((dprec = prec) >= 0)
|
|
flags &= ~ZEROPAD;
|
|
|
|
/*-
|
|
* ``The result of converting a zero value with an
|
|
* explicit precision of zero is no characters.''
|
|
* -- ANSI X3J11
|
|
*
|
|
* ``The C Standard is clear enough as is. The call
|
|
* printf("%#.0o", 0) should print 0.''
|
|
* -- Defect Report #151
|
|
*/
|
|
result = cp = buf + BUF;
|
|
if (flags & INTMAX_SIZE) {
|
|
if (ujval != 0 || prec != 0 ||
|
|
(flags & ALT && base == 8))
|
|
result = __ujtoa(ujval, cp, base,
|
|
flags & ALT, xdigs,
|
|
flags & GROUPING, thousands_sep,
|
|
grouping);
|
|
} else {
|
|
if (ulval != 0 || prec != 0 ||
|
|
(flags & ALT && base == 8))
|
|
result = __ultoa(ulval, cp, base,
|
|
flags & ALT, xdigs,
|
|
flags & GROUPING, thousands_sep,
|
|
grouping);
|
|
}
|
|
_DIAGASSERT(__type_fit(int, buf + BUF - result));
|
|
size = (int)(buf + BUF - result);
|
|
if (size > BUF) /* should never happen */
|
|
abort();
|
|
break;
|
|
default: /* "%?" prints ?, unless ? is NUL */
|
|
if (ch == '\0')
|
|
goto done;
|
|
/* pretend it was %c with argument ch */
|
|
*buf = ch;
|
|
result = buf;
|
|
size = 1;
|
|
sign = '\0';
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* All reasonable formats wind up here. At this point, `result'
|
|
* points to a string which (if not flags&LADJUST) should be
|
|
* padded out to `width' places. If flags&ZEROPAD, it should
|
|
* first be prefixed by any sign or other prefix; otherwise,
|
|
* it should be blank padded before the prefix is emitted.
|
|
* After any left-hand padding and prefixing, emit zeroes
|
|
* required by a decimal [diouxX] precision, then print the
|
|
* string proper, then emit zeroes required by any leftover
|
|
* floating precision; finally, if LADJUST, pad with blanks.
|
|
*
|
|
* Compute actual size, so we know how much to pad.
|
|
* size excludes decimal prec; realsz includes it.
|
|
*/
|
|
realsz = dprec > size ? dprec : size;
|
|
if (sign)
|
|
realsz++;
|
|
if (ox[1])
|
|
realsz += 2;
|
|
|
|
prsize = width > realsz ? width : realsz;
|
|
if ((unsigned)ret + prsize > INT_MAX) {
|
|
ret = END_OF_FILE;
|
|
goto error;
|
|
}
|
|
|
|
/* right-adjusting blank padding */
|
|
if ((flags & (LADJUST|ZEROPAD)) == 0)
|
|
PAD(width - realsz, blanks);
|
|
|
|
/* prefix */
|
|
if (sign)
|
|
PRINT(&sign, 1);
|
|
|
|
if (ox[1]) { /* ox[1] is either x, X, or \0 */
|
|
ox[0] = '0';
|
|
PRINT(ox, 2);
|
|
}
|
|
|
|
/* right-adjusting zero padding */
|
|
if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
|
|
PAD(width - realsz, zeroes);
|
|
|
|
/* leading zeroes from decimal precision */
|
|
PAD(dprec - size, zeroes);
|
|
|
|
/* the string or number proper */
|
|
#ifndef NO_FLOATING_POINT
|
|
if ((flags & FPT) == 0) {
|
|
PRINT(result, size);
|
|
} else { /* glue together f_p fragments */
|
|
if (!expchar) { /* %[fF] or sufficiently short %[gG] */
|
|
if (expt <= 0) {
|
|
PRINT(zeroes, 1);
|
|
if (prec || flags & ALT)
|
|
PRINT(decimal_point, 1);
|
|
PAD(-expt, zeroes);
|
|
/* already handled initial 0's */
|
|
prec += expt;
|
|
} else {
|
|
PRINTANDPAD(result, convbuf + ndig,
|
|
lead, zeroes);
|
|
result += lead;
|
|
if (grouping) {
|
|
while (nseps>0 || nrepeats>0) {
|
|
if (nrepeats > 0)
|
|
nrepeats--;
|
|
else {
|
|
grouping--;
|
|
nseps--;
|
|
}
|
|
PRINT(&thousands_sep,
|
|
1);
|
|
PRINTANDPAD(result,
|
|
convbuf + ndig,
|
|
*grouping, zeroes);
|
|
result += *grouping;
|
|
}
|
|
if (result > convbuf + ndig)
|
|
result = convbuf + ndig;
|
|
}
|
|
if (prec || flags & ALT) {
|
|
buf[0] = *decimal_point;
|
|
PRINT(buf, 1);
|
|
}
|
|
}
|
|
PRINTANDPAD(result, convbuf + ndig, prec,
|
|
zeroes);
|
|
} else { /* %[eE] or sufficiently long %[gG] */
|
|
if (prec > 1 || flags & ALT) {
|
|
buf[0] = *result++;
|
|
buf[1] = *decimal_point;
|
|
PRINT(buf, 2);
|
|
PRINT(result, ndig-1);
|
|
PAD(prec - ndig, zeroes);
|
|
} else /* XeYYY */
|
|
PRINT(result, 1);
|
|
PRINT(expstr, expsize);
|
|
}
|
|
}
|
|
#else
|
|
PRINT(result, size);
|
|
#endif
|
|
/* left-adjusting padding (always blank) */
|
|
if (flags & LADJUST)
|
|
PAD(width - realsz, blanks);
|
|
|
|
/* finally, adjust ret */
|
|
ret += prsize;
|
|
FLUSH();
|
|
}
|
|
done:
|
|
FLUSH();
|
|
error:
|
|
va_end(orgap);
|
|
if (convbuf != NULL)
|
|
free(convbuf);
|
|
if (__sferror(fp))
|
|
ret = END_OF_FILE;
|
|
if ((argtable != NULL) && (argtable != statargtable))
|
|
free (argtable);
|
|
return ret;
|
|
/* NOTREACHED */
|
|
oomem:
|
|
errno = ENOMEM;
|
|
ret = END_OF_FILE;
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Find all arguments when a positional parameter is encountered. Returns a
|
|
* table, indexed by argument number, of pointers to each arguments. The
|
|
* initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
|
|
* It will be replaces with a malloc-ed one if it overflows.
|
|
*/
|
|
static int
|
|
__find_arguments(const CHAR_T *fmt0, va_list ap, union arg **argtable)
|
|
{
|
|
CHAR_T *fmt; /* format string */
|
|
int ch; /* character from fmt */
|
|
size_t n, n2; /* handy index (short term usage) */
|
|
CHAR_T *cp; /* handy char pointer (short term usage) */
|
|
int flags; /* flags as above */
|
|
enum typeid *typetable; /* table of types */
|
|
enum typeid stattypetable [STATIC_ARG_TBL_SIZE];
|
|
size_t tablesize; /* current size of type table */
|
|
size_t tablemax; /* largest used index in table */
|
|
size_t nextarg; /* 1-based argument index */
|
|
size_t nitems; /* number of items we picked from the stack */
|
|
|
|
/*
|
|
* Add an argument type to the table, expanding if necessary.
|
|
* Check for overflow.
|
|
*/
|
|
#define ADDTYPE(type) \
|
|
do { \
|
|
if (nextarg > SIZE_MAX / sizeof(**argtable)) { \
|
|
if (typetable != stattypetable) \
|
|
free(typetable); \
|
|
return -1; \
|
|
} \
|
|
if (nextarg >= tablesize) \
|
|
if (__grow_type_table(nextarg, &typetable, \
|
|
&tablesize) == -1) \
|
|
return -1; \
|
|
if (nextarg > tablemax) \
|
|
tablemax = nextarg; \
|
|
typetable[nextarg++] = type; \
|
|
nitems++; \
|
|
} while (/*CONSTCOND*/0)
|
|
|
|
#define ADDSARG() \
|
|
do { \
|
|
if (flags & INTMAXT) \
|
|
ADDTYPE(T_INTMAXT); \
|
|
else if (flags & SIZET) \
|
|
ADDTYPE(T_SSIZET); \
|
|
else if (flags & PTRDIFFT) \
|
|
ADDTYPE(T_PTRDIFFT); \
|
|
else if (flags & LLONGINT) \
|
|
ADDTYPE(T_LLONG); \
|
|
else if (flags & LONGINT) \
|
|
ADDTYPE(T_LONG); \
|
|
else \
|
|
ADDTYPE(T_INT); \
|
|
} while (/*CONSTCOND*/0)
|
|
|
|
#define ADDUARG() \
|
|
do { \
|
|
if (flags & INTMAXT) \
|
|
ADDTYPE(T_UINTMAXT); \
|
|
else if (flags & SIZET) \
|
|
ADDTYPE(T_SIZET); \
|
|
else if (flags & PTRDIFFT) \
|
|
ADDTYPE(T_PTRDIFFT); \
|
|
else if (flags & LLONGINT) \
|
|
ADDTYPE(T_U_LLONG); \
|
|
else if (flags & LONGINT) \
|
|
ADDTYPE(T_U_LONG); \
|
|
else \
|
|
ADDTYPE(T_U_INT); \
|
|
} while (/*CONSTCOND*/0)
|
|
/*
|
|
* Add * arguments to the type array.
|
|
*/
|
|
#define ADDASTER() \
|
|
n2 = 0; \
|
|
cp = fmt; \
|
|
while (is_digit(*cp)) { \
|
|
n2 = 10 * n2 + to_digit(*cp); \
|
|
cp++; \
|
|
} \
|
|
if (*cp == '$') { \
|
|
size_t hold = nextarg; \
|
|
nextarg = n2; \
|
|
ADDTYPE(T_INT); \
|
|
nextarg = hold; \
|
|
fmt = ++cp; \
|
|
} else { \
|
|
ADDTYPE(T_INT); \
|
|
}
|
|
fmt = (CHAR_T *)__UNCONST(fmt0);
|
|
memset(stattypetable, 0, sizeof(stattypetable));
|
|
typetable = stattypetable;
|
|
tablesize = STATIC_ARG_TBL_SIZE;
|
|
tablemax = 0;
|
|
nextarg = 1;
|
|
nitems = 1;
|
|
|
|
/*
|
|
* Scan the format for conversions (`%' character).
|
|
*/
|
|
for (;;) {
|
|
for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
|
|
/* void */;
|
|
if (ch == '\0')
|
|
goto done;
|
|
fmt++; /* skip over '%' */
|
|
|
|
flags = 0;
|
|
|
|
rflag: ch = *fmt++;
|
|
reswitch: switch (ch) {
|
|
case ' ':
|
|
case '#':
|
|
goto rflag;
|
|
case '*':
|
|
ADDASTER ();
|
|
goto rflag;
|
|
case '-':
|
|
case '+':
|
|
case '\'':
|
|
goto rflag;
|
|
case '.':
|
|
if ((ch = *fmt++) == '*') {
|
|
ADDASTER ();
|
|
goto rflag;
|
|
}
|
|
while (is_digit(ch)) {
|
|
ch = *fmt++;
|
|
}
|
|
goto reswitch;
|
|
case '0':
|
|
goto rflag;
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
n = 0;
|
|
do {
|
|
n = 10 * n + to_digit(ch);
|
|
ch = *fmt++;
|
|
} while (is_digit(ch));
|
|
if (ch == '$') {
|
|
nextarg = n;
|
|
goto rflag;
|
|
}
|
|
goto reswitch;
|
|
#ifndef NO_FLOATING_POINT
|
|
case 'L':
|
|
flags |= LONGDBL;
|
|
goto rflag;
|
|
#endif
|
|
case 'h':
|
|
if (flags & SHORTINT) {
|
|
flags &= ~SHORTINT;
|
|
flags |= CHARINT;
|
|
} else
|
|
flags |= SHORTINT;
|
|
goto rflag;
|
|
case 'j':
|
|
flags |= INTMAXT;
|
|
goto rflag;
|
|
case 'l':
|
|
if (flags & LONGINT) {
|
|
flags &= ~LONGINT;
|
|
flags |= LLONGINT;
|
|
} else
|
|
flags |= LONGINT;
|
|
goto rflag;
|
|
case 'q':
|
|
flags |= LLONGINT; /* not necessarily */
|
|
goto rflag;
|
|
case 't':
|
|
flags |= PTRDIFFT;
|
|
goto rflag;
|
|
case 'z':
|
|
flags |= SIZET;
|
|
goto rflag;
|
|
case 'C':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'c':
|
|
if (flags & LONGINT)
|
|
ADDTYPE(T_WINT);
|
|
else
|
|
ADDTYPE(T_INT);
|
|
break;
|
|
case 'D':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'd':
|
|
case 'i':
|
|
ADDSARG();
|
|
break;
|
|
#ifndef NO_FLOATING_POINT
|
|
case 'a':
|
|
case 'A':
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'g':
|
|
case 'G':
|
|
if (flags & LONGDBL)
|
|
ADDTYPE(T_LONG_DOUBLE);
|
|
else
|
|
ADDTYPE(T_DOUBLE);
|
|
break;
|
|
#endif /* !NO_FLOATING_POINT */
|
|
case 'n':
|
|
if (flags & INTMAXT)
|
|
ADDTYPE(TP_INTMAXT);
|
|
else if (flags & PTRDIFFT)
|
|
ADDTYPE(TP_PTRDIFFT);
|
|
else if (flags & SIZET)
|
|
ADDTYPE(TP_SIZET);
|
|
else if (flags & LLONGINT)
|
|
ADDTYPE(TP_LLONG);
|
|
else if (flags & LONGINT)
|
|
ADDTYPE(TP_LONG);
|
|
else if (flags & SHORTINT)
|
|
ADDTYPE(TP_SHORT);
|
|
else if (flags & CHARINT)
|
|
ADDTYPE(TP_SCHAR);
|
|
else
|
|
ADDTYPE(TP_INT);
|
|
continue; /* no output */
|
|
case 'O':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'o':
|
|
ADDUARG();
|
|
break;
|
|
case 'p':
|
|
ADDTYPE(TP_VOID);
|
|
break;
|
|
case 'S':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 's':
|
|
if (flags & LONGINT)
|
|
ADDTYPE(TP_WCHAR);
|
|
else
|
|
ADDTYPE(TP_CHAR);
|
|
break;
|
|
case 'U':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'u':
|
|
case 'X':
|
|
case 'x':
|
|
ADDUARG();
|
|
break;
|
|
default: /* "%?" prints ?, unless ? is NUL */
|
|
if (ch == '\0')
|
|
goto done;
|
|
break;
|
|
}
|
|
}
|
|
done:
|
|
/*
|
|
* nitems contains the number of arguments we picked from the stack.
|
|
* If tablemax is larger, this means that some positional argument,
|
|
* tried to pick an argument the number of arguments possibly supplied.
|
|
* Since positional arguments are typically used to swap the order of
|
|
* the printf arguments and not to pick random arguments from strange
|
|
* positions in the stack, we assume that if the positional argument
|
|
* is trying to pick beyond the end of arguments, then this is wrong.
|
|
* Alternatively we could find a way to figure out when va_arg() runs
|
|
* out, but how to do that?
|
|
*/
|
|
if (nitems < tablemax) {
|
|
if (typetable != stattypetable)
|
|
free(typetable);
|
|
return -1;
|
|
}
|
|
/*
|
|
* Build the argument table.
|
|
*/
|
|
if (tablemax >= STATIC_ARG_TBL_SIZE) {
|
|
*argtable = malloc(sizeof(**argtable) * (tablemax + 1));
|
|
if (*argtable == NULL) {
|
|
free(typetable);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
(*argtable) [0].intarg = 0;
|
|
for (n = 1; n <= tablemax; n++) {
|
|
switch (typetable [n]) {
|
|
case T_UNUSED: /* whoops! */
|
|
(*argtable) [n].intarg = va_arg (ap, int);
|
|
break;
|
|
case TP_SCHAR:
|
|
(*argtable) [n].pschararg = va_arg (ap, signed char *);
|
|
break;
|
|
case TP_SHORT:
|
|
(*argtable) [n].pshortarg = va_arg (ap, short *);
|
|
break;
|
|
case T_INT:
|
|
(*argtable) [n].intarg = va_arg (ap, int);
|
|
break;
|
|
case T_U_INT:
|
|
(*argtable) [n].uintarg = va_arg (ap, unsigned int);
|
|
break;
|
|
case TP_INT:
|
|
(*argtable) [n].pintarg = va_arg (ap, int *);
|
|
break;
|
|
case T_LONG:
|
|
(*argtable) [n].longarg = va_arg (ap, long);
|
|
break;
|
|
case T_U_LONG:
|
|
(*argtable) [n].ulongarg = va_arg (ap, unsigned long);
|
|
break;
|
|
case TP_LONG:
|
|
(*argtable) [n].plongarg = va_arg (ap, long *);
|
|
break;
|
|
case T_LLONG:
|
|
(*argtable) [n].longlongarg = va_arg (ap, long long);
|
|
break;
|
|
case T_U_LLONG:
|
|
(*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long);
|
|
break;
|
|
case TP_LLONG:
|
|
(*argtable) [n].plonglongarg = va_arg (ap, long long *);
|
|
break;
|
|
case T_PTRDIFFT:
|
|
(*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t);
|
|
break;
|
|
case TP_PTRDIFFT:
|
|
(*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *);
|
|
break;
|
|
case T_SSIZET:
|
|
(*argtable) [n].ssizearg = va_arg (ap, ssize_t);
|
|
break;
|
|
case T_SIZET:
|
|
(*argtable) [n].sizearg = va_arg (ap, size_t);
|
|
break;
|
|
case TP_SIZET:
|
|
(*argtable) [n].psizearg = va_arg (ap, size_t *);
|
|
break;
|
|
case T_INTMAXT:
|
|
(*argtable) [n].intmaxarg = va_arg (ap, intmax_t);
|
|
break;
|
|
case T_UINTMAXT:
|
|
(*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t);
|
|
break;
|
|
case TP_INTMAXT:
|
|
(*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *);
|
|
break;
|
|
case T_DOUBLE:
|
|
#ifndef NO_FLOATING_POINT
|
|
(*argtable) [n].doublearg = va_arg (ap, double);
|
|
#endif
|
|
break;
|
|
case T_LONG_DOUBLE:
|
|
#ifndef NO_FLOATING_POINT
|
|
(*argtable) [n].longdoublearg = va_arg (ap, long double);
|
|
#endif
|
|
break;
|
|
case TP_CHAR:
|
|
(*argtable) [n].pchararg = va_arg (ap, char *);
|
|
break;
|
|
case TP_VOID:
|
|
(*argtable) [n].pvoidarg = va_arg (ap, void *);
|
|
break;
|
|
case T_WINT:
|
|
(*argtable) [n].wintarg = va_arg (ap, wint_t);
|
|
break;
|
|
case TP_WCHAR:
|
|
(*argtable) [n].pwchararg = va_arg (ap, wchar_t *);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (typetable != stattypetable)
|
|
free (typetable);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Increase the size of the type table.
|
|
*/
|
|
static int
|
|
__grow_type_table (size_t nextarg, enum typeid **typetable, size_t *tablesize)
|
|
{
|
|
enum typeid *const oldtable = *typetable;
|
|
const size_t oldsize = *tablesize;
|
|
enum typeid *newtable;
|
|
size_t newsize = oldsize * 2;
|
|
|
|
if (newsize < nextarg + 1)
|
|
newsize = nextarg + 1;
|
|
if (oldsize == STATIC_ARG_TBL_SIZE) {
|
|
if ((newtable = malloc(newsize * sizeof(*newtable))) == NULL)
|
|
return -1;
|
|
memcpy(newtable, oldtable, oldsize * sizeof(*newtable));
|
|
} else {
|
|
newtable = realloc(oldtable, newsize * sizeof(*newtable));
|
|
if (newtable == NULL) {
|
|
free(oldtable);
|
|
return -1;
|
|
}
|
|
}
|
|
memset(&newtable[oldsize], 0, (newsize - oldsize) * sizeof(*newtable));
|
|
|
|
*typetable = newtable;
|
|
*tablesize = newsize;
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifndef NO_FLOATING_POINT
|
|
#ifndef WIDE_DOUBLE
|
|
static char *
|
|
cvt(double value, int ndigits, int flags, char *sign, int *decpt, int ch,
|
|
int *length)
|
|
{
|
|
int mode, dsgn;
|
|
char *digits, *bp, *rve;
|
|
|
|
_DIAGASSERT(decpt != NULL);
|
|
_DIAGASSERT(length != NULL);
|
|
_DIAGASSERT(sign != NULL);
|
|
|
|
if (ch == 'f') {
|
|
mode = 3; /* ndigits after the decimal point */
|
|
} else {
|
|
/* To obtain ndigits after the decimal point for the 'e'
|
|
* and 'E' formats, round to ndigits + 1 significant
|
|
* figures.
|
|
*/
|
|
if (ch == 'e' || ch == 'E') {
|
|
ndigits++;
|
|
}
|
|
mode = 2; /* ndigits significant digits */
|
|
}
|
|
|
|
digits = __dtoa(value, mode, ndigits, decpt, &dsgn, &rve);
|
|
if (digits == NULL)
|
|
return NULL;
|
|
if (dsgn) {
|
|
value = -value;
|
|
*sign = '-';
|
|
} else
|
|
*sign = '\000';
|
|
if ((ch != 'g' && ch != 'G') || flags & ALT) { /* Print trailing zeros */
|
|
bp = digits + ndigits;
|
|
if (ch == 'f') {
|
|
if (*digits == '0' && value)
|
|
*decpt = -ndigits + 1;
|
|
bp += *decpt;
|
|
}
|
|
if (value == 0) /* kludge for __dtoa irregularity */
|
|
rve = bp;
|
|
while (rve < bp)
|
|
*rve++ = '0';
|
|
}
|
|
*length = rve - digits;
|
|
return digits;
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
exponent(CHAR_T *p0, int expo, int fmtch)
|
|
{
|
|
CHAR_T *p, *t;
|
|
CHAR_T expbuf[MAXEXPDIG];
|
|
|
|
p = p0;
|
|
*p++ = fmtch;
|
|
if (expo < 0) {
|
|
expo = -expo;
|
|
*p++ = '-';
|
|
}
|
|
else
|
|
*p++ = '+';
|
|
t = expbuf + MAXEXPDIG;
|
|
if (expo > 9) {
|
|
do {
|
|
*--t = to_char(expo % 10);
|
|
} while ((expo /= 10) > 9);
|
|
*--t = to_char(expo);
|
|
for (; t < expbuf + MAXEXPDIG; *p++ = *t++);
|
|
}
|
|
else {
|
|
/*
|
|
* Exponents for decimal floating point conversions
|
|
* (%[eEgG]) must be at least two characters long,
|
|
* whereas exponents for hexadecimal conversions can
|
|
* be only one character long.
|
|
*/
|
|
if (fmtch == 'e' || fmtch == 'E')
|
|
*p++ = '0';
|
|
*p++ = to_char(expo);
|
|
}
|
|
_DIAGASSERT(__type_fit(int, p - p0));
|
|
return (int)(p - p0);
|
|
}
|
|
#endif /* !NO_FLOATING_POINT */
|