1112158Sdas/****************************************************************
2112158Sdas
3112158SdasThe author of this software is David M. Gay.
4112158Sdas
5112158SdasCopyright (C) 1998, 2000 by Lucent Technologies
6112158SdasAll Rights Reserved
7112158Sdas
8112158SdasPermission to use, copy, modify, and distribute this software and
9112158Sdasits documentation for any purpose and without fee is hereby
10112158Sdasgranted, provided that the above copyright notice appear in all
11112158Sdascopies and that both that the copyright notice and this
12112158Sdaspermission notice and warranty disclaimer appear in supporting
13112158Sdasdocumentation, and that the name of Lucent or any of its entities
14112158Sdasnot be used in advertising or publicity pertaining to
15112158Sdasdistribution of the software without specific, written prior
16112158Sdaspermission.
17112158Sdas
18112158SdasLUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19112158SdasINCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
20112158SdasIN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
21112158SdasSPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
22112158SdasWHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
23112158SdasIN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
24112158SdasARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
25112158SdasTHIS SOFTWARE.
26112158Sdas
27112158Sdas****************************************************************/
28112158Sdas
29165743Sdas/* Please send bug reports to David M. Gay (dmg at acm dot org,
30165743Sdas * with " at " changed at "@" and " dot " changed to ".").	*/
31112158Sdas
32112158Sdas#include "gdtoaimp.h"
33112158Sdas
34112158Sdas#undef _0
35112158Sdas#undef _1
36112158Sdas
37112158Sdas/* one or the other of IEEE_MC68k or IEEE_8087 should be #defined */
38112158Sdas
39112158Sdas#ifdef IEEE_MC68k
40112158Sdas#define _0 0
41112158Sdas#define _1 1
42112158Sdas#define _2 2
43112158Sdas#endif
44112158Sdas#ifdef IEEE_8087
45112158Sdas#define _0 2
46112158Sdas#define _1 1
47112158Sdas#define _2 0
48112158Sdas#endif
49112158Sdas
50112158Sdas int
51112158Sdas#ifdef KR_headers
52112158SdasstrtopxL(s, sp, V) CONST char *s; char **sp; void *V;
53112158Sdas#else
54112158SdasstrtopxL(CONST char *s, char **sp, void *V)
55112158Sdas#endif
56112158Sdas{
57187808Sdas	static FPI fpi0 = { 64, 1-16383-64+1, 32766 - 16383 - 64 + 1, 1, SI };
58112158Sdas	ULong bits[2];
59112158Sdas	Long exp;
60112158Sdas	int k;
61112158Sdas	ULong *L = (ULong*)V;
62187808Sdas#ifdef Honor_FLT_ROUNDS
63187808Sdas#include "gdtoa_fltrnds.h"
64187808Sdas#else
65187808Sdas#define fpi &fpi0
66187808Sdas#endif
67112158Sdas
68187808Sdas	k = strtodg(s, sp, fpi, &exp, bits);
69112158Sdas	switch(k & STRTOG_Retmask) {
70112158Sdas	  case STRTOG_NoNumber:
71112158Sdas	  case STRTOG_Zero:
72112158Sdas		L[0] = L[1] = L[2] = 0;
73112158Sdas		break;
74112158Sdas
75112158Sdas	  case STRTOG_Normal:
76112158Sdas	  case STRTOG_Denormal:
77112158Sdas	  case STRTOG_NaNbits:
78112158Sdas		L[_2] = bits[0];
79112158Sdas		L[_1] = bits[1];
80112158Sdas		L[_0] = (exp + 0x3fff + 63) << 16;
81112158Sdas		break;
82112158Sdas
83112158Sdas	  case STRTOG_Infinite:
84112158Sdas		L[_0] = 0x7fff << 16;
85219557Sdas		L[_1] = 0x80000000;
86219557Sdas		L[_2] = 0;
87112158Sdas		break;
88112158Sdas
89112158Sdas	  case STRTOG_NaN:
90165743Sdas		L[0] = ld_QNAN0;
91165743Sdas		L[1] = ld_QNAN1;
92165743Sdas		L[2] = ld_QNAN2;
93112158Sdas	  }
94112158Sdas	if (k & STRTOG_Neg)
95112158Sdas		L[_0] |= 0x80000000L;
96112158Sdas	return k;
97112158Sdas	}
98