mirror of
https://github.com/ziglang/zig.git
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49d1a4c562
also start prefering NtDll API. so far: * NtQueryInformationFile * NtClose adds a performance workaround for windows unicode conversion. but that should probably be removed before merging
78 lines
2.2 KiB
C
Vendored
78 lines
2.2 KiB
C
Vendored
/****************************************************************
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The author of this software is David M. Gay.
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Copyright (C) 1998, 2000 by Lucent Technologies
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and
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its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of Lucent or any of its entities
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not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior
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permission.
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LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
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IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
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SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
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IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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THIS SOFTWARE.
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****************************************************************/
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/* Please send bug reports to David M. Gay (dmg at acm dot org,
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* with " at " changed at "@" and " dot " changed to "."). */
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#include "gdtoaimp.h"
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float __strtof (const char *s, char **sp)
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{
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static FPI fpi0 = { 24, 1-127-24+1, 254-127-24+1, 1, SI, Int_max };
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ULong bits[1];
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Long expo;
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int k;
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union { ULong L[1]; float f; } u = { { 0 } };
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#ifdef Honor_FLT_ROUNDS
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#include "gdtoa_fltrnds.h"
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#else
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#define fpi &fpi0
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#endif
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k = __strtodg(s, sp, fpi, &expo, bits);
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switch(k & STRTOG_Retmask) {
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case STRTOG_NoNumber:
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case STRTOG_Zero:
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u.L[0] = 0;
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break;
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case STRTOG_Normal:
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case STRTOG_NaNbits:
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u.L[0] = (bits[0] & 0x7fffff) | ((expo + 0x7f + 23) << 23);
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break;
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case STRTOG_Denormal:
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u.L[0] = bits[0];
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break;
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case STRTOG_Infinite:
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u.L[0] = 0x7f800000;
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break;
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case STRTOG_NaN:
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u.L[0] = f_QNAN;
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}
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if (k & STRTOG_Neg)
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u.L[0] |= 0x80000000L;
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return u.f;
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}
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float __cdecl
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__mingw_strtof (const char * __restrict__ src, char ** __restrict__ endptr)
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__attribute__((alias("__strtof")));
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