f14fb60209
* 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
68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
/* $NetBSD: fixunssfsi_ieee754.c,v 1.2 2012/08/05 04:28:58 matt Exp $ */
|
|
/*-
|
|
* Copyright (c) 2011 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Matt Thomas of 3am Software Foundry.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: fixunssfsi_ieee754.c,v 1.2 2012/08/05 04:28:58 matt Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <float.h>
|
|
#include <machine/ieee.h>
|
|
|
|
#ifdef SOFTFLOAT
|
|
#include "softfloat/softfloat-for-gcc.h"
|
|
#endif
|
|
|
|
uint32_t __fixunsgen32(int, bool, size_t, size_t, const uint32_t *);
|
|
|
|
uint32_t __fixunssfsi(float);
|
|
|
|
/*
|
|
* Convert float to (unsigned) int. All operations are done module 2^32.
|
|
*/
|
|
uint32_t
|
|
__fixunssfsi(float x)
|
|
{
|
|
const union ieee_single_u sngu = { .sngu_f = x };
|
|
const uint32_t frac[(SNG_FRACBITS + 31)/32 + 1] = {
|
|
[0] = 0,
|
|
[1] = sngu.sngu_sng.sng_frac,
|
|
};
|
|
|
|
return __fixunsgen32(
|
|
sngu.sngu_sng.sng_exp - SNG_EXP_BIAS,
|
|
sngu.sngu_sng.sng_sign != 0,
|
|
FLT_MANT_DIG,
|
|
SNG_FRACBITS,
|
|
&frac[__arraycount(frac)-1]);
|
|
}
|