mirror of https://github.com/yasm/yasm.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
2.6 KiB
106 lines
2.6 KiB
/**************************************************************** |
|
|
|
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 |
|
Bell Laboratories, Room 2C-463 |
|
600 Mountain Avenue |
|
Murray Hill, NJ 07974-0636 |
|
U.S.A. |
|
dmg@bell-labs.com |
|
*/ |
|
|
|
#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 |
|
{ |
|
#ifdef Sudden_Underflow |
|
static FPI fpi = { 64, 1-16383-64+1, 32766 - 16383 - 64 + 1, 1, 1 }; |
|
#else |
|
static FPI fpi = { 64, 1-16383-64+1, 32766 - 16383 - 64 + 1, 1, 0 }; |
|
#endif |
|
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_Normal: |
|
case STRTOG_Denormal: |
|
case STRTOG_NaNbits: |
|
L[_4] = (UShort)bits[0]; |
|
L[_3] = (UShort)(bits[0] >> 16); |
|
L[_2] = (UShort)bits[1]; |
|
L[_1] = (UShort)(bits[1] >> 16); |
|
L[_0] = exp + 0x3fff + 63; |
|
break; |
|
|
|
case STRTOG_Infinite: |
|
L[_0] = 0x7fff; |
|
L[_1] = L[_2] = L[_3] = L[_4] = 0; |
|
break; |
|
|
|
case STRTOG_NaN: |
|
L[_0] = 0x7fff; |
|
L[_1] = L[_2] = L[_3] = L[_4] = (UShort)-1; |
|
} |
|
if (k & STRTOG_Neg) |
|
L[_0] |= 0x8000; |
|
return k; |
|
}
|
|
|