| | 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 | |
| | 29 | /* Please send bug reports to David M. Gay (dmg at acm dot org, |
| | 30 | * with " at " changed at "@" and " dot " changed to "."). */ |
| | 31 | |
| | 32 | #include "xlocale_private.h" |
| | 33 | |
| | 34 | #include "gdtoaimp.h" |
| | 35 | |
| | 36 | #undef _0 |
| | 37 | #undef _1 |
| | 38 | |
| | 39 | /* one or the other of IEEE_MC68k or IEEE_8087 should be #defined */ |
| | 40 | |
| | 41 | #ifdef IEEE_MC68k |
| | 42 | #define _0 0 |
| | 43 | #define _1 1 |
| | 44 | #define _2 2 |
| | 45 | #define _3 3 |
| | 46 | #define _4 4 |
| | 47 | #endif |
| | 48 | #ifdef IEEE_8087 |
| | 49 | #define _0 4 |
| | 50 | #define _1 3 |
| | 51 | #define _2 2 |
| | 52 | #define _3 1 |
| | 53 | #define _4 0 |
| | 54 | #endif |
| | 55 | |
| | 56 | int |
| | 57 | #ifdef KR_headers |
| | 58 | strtopx(s, sp, V, loc) CONST char *s; char **sp; void *V; locale_t loc; |
| | 59 | #else |
| | 60 | strtopx(CONST char *s, char **sp, void *V, locale_t loc) |
| | 61 | #endif |
| | 62 | { |
| | 63 | static FPI fpi0 = { 64, 1-16383-64+1, 32766 - 16383 - 64 + 1, 1, SI }; |
| | 64 | ULong bits[2]; |
| | 65 | Long exp; |
| | 66 | int k; |
| | 67 | UShort *L = (UShort*)V; |
| | 68 | #ifdef Honor_FLT_ROUNDS |
| | 69 | #include "gdtoa_fltrnds.h" |
| | 70 | #else |
| | 71 | #define fpi &fpi0 |
| | 72 | #endif |
| | 73 | |
| | 74 | k = strtodg(s, sp, fpi, &exp, bits, loc); |
| | 75 | switch(k & STRTOG_Retmask) { |
| | 76 | case STRTOG_NoNumber: |
| | 77 | L[0] = L[1] = L[2] = L[3] = L[4] = 0; |
| | 78 | return k; // avoid setting sign |
| | 79 | |
| | 80 | case STRTOG_Zero: |
| | 81 | L[0] = L[1] = L[2] = L[3] = L[4] = 0; |
| | 82 | break; |
| | 83 | |
| | 84 | case STRTOG_Denormal: |
| | 85 | L[_0] = 0; |
| | 86 | goto normal_bits; |
| | 87 | |
| | 88 | case STRTOG_Normal: |
| | 89 | case STRTOG_NaNbits: |
| | 90 | L[_0] = exp + 0x3fff + 63; |
| | 91 | normal_bits: |
| | 92 | L[_4] = (UShort)bits[0]; |
| | 93 | L[_3] = (UShort)(bits[0] >> 16); |
| | 94 | L[_2] = (UShort)bits[1]; |
| | 95 | L[_1] = (UShort)(bits[1] >> 16); |
| | 96 | break; |
| | 97 | |
| | 98 | case STRTOG_Infinite: |
| | 99 | L[_0] = 0x7fff; |
| | 100 | L[_1] = 0x8000; |
| | 101 | L[_2] = L[_3] = L[_4] = 0; |
| | 102 | break; |
| | 103 | |
| | 104 | case STRTOG_NaN: |
| | 105 | L[0] = ldus_QNAN0; |
| | 106 | L[1] = ldus_QNAN1; |
| | 107 | L[2] = ldus_QNAN2; |
| | 108 | L[3] = ldus_QNAN3; |
| | 109 | L[4] = ldus_QNAN4; |
| | 110 | } |
| | 111 | if (k & STRTOG_Neg) |
| | 112 | L[_0] |= 0x8000; |
| | 113 | return k; |
| | 114 | } |
projects / apple / libc.git / blame_incremental