mirror of
https://github.com/ZDoom/qzdoom-gpl.git
synced 2024-12-13 21:51:08 +00:00
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
|
/****************************************************************
|
||
|
|
|
||
|
|
The author of this software is David M. Gay.
|
||
|
|
|
||
|
|
Copyright (C) 1998, 2000 by Lucent Technologies
|
||
|
|
All Rights Reserved
|
||
|
|
|
||
|
|
Permission to use, copy, modify, and distribute this software and
|
||
|
|
its documentation for any purpose and without fee is hereby
|
||
|
|
granted, provided that the above copyright notice appear in all
|
||
|
|
copies and that both that the copyright notice and this
|
||
|
|
permission notice and warranty disclaimer appear in supporting
|
||
|
|
documentation, and that the name of Lucent or any of its entities
|
||
|
|
not be used in advertising or publicity pertaining to
|
||
|
|
distribution of the software without specific, written prior
|
||
|
|
permission.
|
||
|
|
|
||
|
|
LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
||
|
|
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
|
||
|
|
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
|
||
|
|
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
|
||
|
|
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
|
||
|
|
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
|
||
|
|
THIS SOFTWARE.
|
||
|
|
|
||
|
|
****************************************************************/
|
||
|
|
|
||
|
|
/* Please send bug reports to David M. Gay (dmg at acm dot org,
|
||
|
|
* with " at " changed at "@" and " dot " changed to "."). */
|
||
|
|
|
||
|
|
#include "gdtoaimp.h"
|
||
|
|
|
||
|
|
#undef _0
|
||
|
|
#undef _1
|
||
|
|
|
||
|
|
/* one or the other of IEEE_MC68k or IEEE_8087 should be #defined */
|
||
|
|
|
||
|
|
#ifdef IEEE_MC68k
|
||
|
|
#define _0 0
|
||
|
|
#define _1 1
|
||
|
|
#define _2 2
|
||
|
|
#define _3 3
|
||
|
|
#define _4 4
|
||
|
|
#endif
|
||
|
|
#ifdef IEEE_8087
|
||
|
|
#define _0 4
|
||
|
|
#define _1 3
|
||
|
|
#define _2 2
|
||
|
|
#define _3 1
|
||
|
|
#define _4 0
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int
|
||
|
|
#ifdef KR_headers
|
||
|
|
strtopx(s, sp, V) CONST char *s; char **sp; void *V;
|
||
|
|
#else
|
||
|
|
strtopx(CONST char *s, char **sp, void *V)
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
static CONST FPI fpi = { 64, 1-16383-64+1, 32766 - 16383 - 64 + 1, 1, SI };
|
||
|
|
ULong bits[2];
|
||
|
|
Long exp;
|
||
|
|
int k;
|
||
|
|
UShort *L = (UShort*)V;
|
||
|
|
|
||
|
|
k = strtodg(s, sp, &fpi, &exp, bits);
|
||
|
|
switch(k & STRTOG_Retmask) {
|
||
|
|
case STRTOG_NoNumber:
|
||
|
|
case STRTOG_Zero:
|
||
|
|
L[0] = L[1] = L[2] = L[3] = L[4] = 0;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case STRTOG_Denormal:
|
||
|
|
L[_0] = 0;
|
||
|
|
goto normal_bits;
|
||
|
|
|
||
|
|
case STRTOG_Normal:
|
||
|
|
case STRTOG_NaNbits:
|
||
|
|
L[_0] = exp + 0x3fff + 63;
|
||
|
|
normal_bits:
|
||
|
|
L[_4] = (UShort)bits[0];
|
||
|
|
L[_3] = (UShort)(bits[0] >> 16);
|
||
|
|
L[_2] = (UShort)bits[1];
|
||
|
|
L[_1] = (UShort)(bits[1] >> 16);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case STRTOG_Infinite:
|
||
|
|
L[_0] = 0x7fff;
|
||
|
|
L[_1] = L[_2] = L[_3] = L[_4] = 0;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case STRTOG_NaN:
|
||
|
|
L[0] = ldus_QNAN0;
|
||
|
|
L[1] = ldus_QNAN1;
|
||
|
|
L[2] = ldus_QNAN2;
|
||
|
|
L[3] = ldus_QNAN3;
|
||
|
|
L[4] = ldus_QNAN4;
|
||
|
|
}
|
||
|
|
if (k & STRTOG_Neg)
|
||
|
|
L[_0] |= 0x8000;
|
||
|
|
return k;
|
||
|
|
}
|