projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9385eb3d A |
1 | /**************************************************************** |
| 2 | ||
| 3 | The author of this software is David M. Gay. | |
| 4 | ||
| 5 | Copyright (C) 1998, 2000 by Lucent Technologies | |
| 6 | All Rights Reserved | |
| 7 | ||
| 8 | Permission to use, copy, modify, and distribute this software and | |
| 9 | its documentation for any purpose and without fee is hereby | |
| 10 | granted, provided that the above copyright notice appear in all | |
| 11 | copies and that both that the copyright notice and this | |
| 12 | permission notice and warranty disclaimer appear in supporting | |
| 13 | documentation, and that the name of Lucent or any of its entities | |
| 14 | not be used in advertising or publicity pertaining to | |
| 15 | distribution of the software without specific, written prior | |
| 16 | permission. | |
| 17 | ||
| 18 | LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
| 19 | INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. | |
| 20 | IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY | |
| 21 | SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 22 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER | |
| 23 | IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
| 24 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF | |
| 25 | THIS SOFTWARE. | |
| 26 | ||
| 27 | ****************************************************************/ | |
| 28 | ||
| 3d9156a7 A |
29 | /* Please send bug reports to David M. Gay (dmg at acm dot org, |
| 30 | * with " at " changed at "@" and " dot " changed to "."). */ | |
| 9385eb3d A |
31 | |
| 32 | #include "gdtoaimp.h" | |
| 33 | ||
| 34 | void | |
| 35 | #ifdef KR_headers | |
| 36 | ULtod(L, bits, exp, k) ULong *L; ULong *bits; Long exp; int k; | |
| 37 | #else | |
| 38 | ULtod(ULong *L, ULong *bits, Long exp, int k) | |
| 39 | #endif | |
| 40 | { | |
| 41 | switch(k & STRTOG_Retmask) { | |
| 42 | case STRTOG_NoNumber: | |
| 43 | case STRTOG_Zero: | |
| 44 | L[0] = L[1] = 0; | |
| 45 | break; | |
| 46 | ||
| 47 | case STRTOG_Denormal: | |
| 48 | L[_1] = bits[0]; | |
| 49 | L[_0] = bits[1]; | |
| 50 | break; | |
| 51 | ||
| 52 | case STRTOG_Normal: | |
| 53 | case STRTOG_NaNbits: | |
| 54 | L[_1] = bits[0]; | |
| 55 | L[_0] = (bits[1] & ~0x100000) | ((exp + 0x3ff + 52) << 20); | |
| 56 | break; | |
| 57 | ||
| 58 | case STRTOG_Infinite: | |
| 59 | L[_0] = 0x7ff00000; | |
| 60 | L[_1] = 0; | |
| 61 | break; | |
| 62 | ||
| 63 | case STRTOG_NaN: | |
| 3d9156a7 A |
64 | L[0] = d_QNAN0; |
| 65 | L[1] = d_QNAN1; | |
| 9385eb3d A |
66 | } |
| 67 | if (k & STRTOG_Neg) | |
| 68 | L[_0] |= 0x80000000L; | |
| 69 | } | |
| 70 | ||
| 71 | int | |
| 72 | #ifdef KR_headers | |
| 73 | strtord(s, sp, rounding, d) CONST char *s; char **sp; int rounding; double *d; | |
| 74 | #else | |
| 75 | strtord(CONST char *s, char **sp, int rounding, double *d) | |
| 76 | #endif | |
| 77 | { | |
| 78 | static FPI fpi0 = { 53, 1-1023-53+1, 2046-1023-53+1, 1, SI }; | |
| 79 | FPI *fpi, fpi1; | |
| 80 | ULong bits[2]; | |
| 81 | Long exp; | |
| 82 | int k; | |
| 83 | ||
| 84 | fpi = &fpi0; | |
| 85 | if (rounding != FPI_Round_near) { | |
| 86 | fpi1 = fpi0; | |
| 87 | fpi1.rounding = rounding; | |
| 88 | fpi = &fpi1; | |
| 89 | } | |
| 90 | k = strtodg(s, sp, fpi, &exp, bits); | |
| 91 | ULtod((ULong*)d, bits, exp, k); | |
| 92 | return k; | |
| 93 | } |