2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
114 lines
4.1 KiB
C
114 lines
4.1 KiB
C
/* $NetBSD: mathimpl.h,v 1.9 2008/05/01 15:33:15 christos Exp $ */
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/*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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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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* @(#)mathimpl.h 8.1 (Berkeley) 6/4/93
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*/
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#ifndef _NOIEEE_SRC_MATHIMPL_H_
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#define _NOIEEE_SRC_MATHIMPL_H_
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#include <sys/cdefs.h>
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#include <math.h>
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#include <stdint.h>
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#if defined(__vax__) || defined(tahoe)
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/* Deal with different ways to concatenate in cpp */
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#define cat3(a,b,c) a ## b ## c
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/* Deal with vax/tahoe byte order issues */
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# ifdef __vax__
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# define cat3t(a,b,c) cat3(a,b,c)
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# else
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# define cat3t(a,b,c) cat3(a,c,b)
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# endif
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# define vccast(name) (cat3(__,name,x).d)
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/*
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* Define a constant to high precision on a Vax or Tahoe.
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*
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* Args are the name to define, the decimal floating point value,
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* four 16-bit chunks of the float value in hex
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* (because the vax and tahoe differ in float format!), the power
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* of 2 of the hex-float exponent, and the hex-float mantissa.
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* Most of these arguments are not used at compile time; they are
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* used in a post-check to make sure the constants were compiled
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* correctly.
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*
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* People who want to use the constant will have to do their own
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* #define foo vccast(foo)
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* since CPP cannot do this for them from inside another macro (sigh).
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* We define "vccast" if this needs doing.
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*/
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#ifdef _LIBM_DECLARE
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# define vc(name, value, x1,x2,x3,x4, bexp, xval) \
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const union { uint32_t l[2]; double d; } cat3(__,name,x) = { \
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.l = { [0] = cat3t(0x,x1,x2), [1] = cat3t(0x,x3,x4) } };
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#elif defined(_LIBM_STATIC)
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# define vc(name, value, x1,x2,x3,x4, bexp, xval) \
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static const union { uint32_t l[2]; double d; } cat3(__,name,x) = { \
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.l = { [0] = cat3t(0x,x1,x2), [1] = cat3t(0x,x3,x4) } };
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#else
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# define vc(name, value, x1,x2,x3,x4, bexp, xval) \
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extern const union { uint32_t l[2]; double d; } cat3(__,name,x);
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#endif
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# define ic(name, value, bexp, xval)
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#else /* __vax__ or tahoe */
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/* Hooray, we have an IEEE machine */
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# undef vccast
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# define vc(name, value, x1,x2,x3,x4, bexp, xval)
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#ifdef _LIBM_DECLARE
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# define ic(name, value, bexp, xval) \
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const double __CONCAT(__,name) = value;
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#elif _LIBM_STATIC
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# define ic(name, value, bexp, xval) \
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static const double __CONCAT(__,name) = value;
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#else
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# define ic(name, value, bexp, xval) \
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extern const double __CONCAT(__,name);
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#endif
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#endif /* defined(__vax__)||defined(tahoe) */
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/*
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* Functions internal to the math package, yet not static.
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*/
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extern double __exp__E(double, double);
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extern double __log__L(double);
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extern int infnan(int);
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struct Double {double a, b;};
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double __exp__D(double, double);
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struct Double __log__D(double);
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#endif /* _NOIEEE_SRC_MATHIMPL_H_ */
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