Rev 6099 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6099 | serge | 1 | /**************************************************************** |
| 2 | |||
| 3 | The author of this software is David M. Gay. |
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| 4 | |||
| 5 | Copyright (C) 1998, 2000 by Lucent Technologies |
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| 6 | All Rights Reserved |
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| 7 | |||
| 8 | Permission to use, copy, modify, and distribute this software and |
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| 9 | its documentation for any purpose and without fee is hereby |
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| 10 | granted, provided that the above copyright notice appear in all |
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| 11 | copies and that both that the copyright notice and this |
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| 12 | permission notice and warranty disclaimer appear in supporting |
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| 13 | documentation, and that the name of Lucent or any of its entities |
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| 14 | not be used in advertising or publicity pertaining to |
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| 15 | distribution of the software without specific, written prior |
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| 16 | permission. |
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| 17 | |||
| 18 | LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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| 19 | INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. |
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| 20 | IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY |
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| 21 | SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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| 22 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER |
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| 23 | IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, |
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| 24 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF |
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| 25 | THIS SOFTWARE. |
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| 26 | |||
| 27 | ****************************************************************/ |
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| 28 | |||
| 29 | /* Please send bug reports to David M. Gay (dmg at acm dot org, |
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| 30 | * with " at " changed at "@" and " dot " changed to "."). */ |
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| 31 | |||
| 32 | #include <_ansi.h> |
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| 33 | #include |
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| 34 | #include |
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| 35 | #include |
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| 36 | #include "mprec.h" |
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| 37 | #include "gdtoa.h" |
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| 38 | #include "gd_qnan.h" |
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| 39 | |||
| 40 | #if defined (_HAVE_LONG_DOUBLE) && !defined (_LDBL_EQ_DBL) |
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| 41 | |||
| 42 | #undef _0 |
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| 43 | #undef _1 |
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| 44 | |||
| 45 | /* one or the other of IEEE_MC68k or IEEE_8087 should be #defined */ |
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| 46 | |||
| 47 | #ifdef IEEE_MC68k |
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| 48 | #define _0 0 |
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| 49 | #define _1 1 |
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| 50 | #define _2 2 |
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| 51 | #define _3 3 |
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| 52 | #define _4 4 |
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| 53 | #endif |
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| 54 | #ifdef IEEE_8087 |
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| 55 | #define _0 4 |
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| 56 | #define _1 3 |
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| 57 | #define _2 2 |
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| 58 | #define _3 1 |
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| 59 | #define _4 0 |
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| 60 | #endif |
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| 61 | |||
| 62 | void |
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| 63 | #ifdef KR_headers |
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| 64 | ULtox(L, bits, exp, k) __UShort *L; __ULong *bits; Long exp; int k; |
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| 65 | #else |
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| 66 | ULtox(__UShort *L, __ULong *bits, Long exp, int k) |
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| 67 | #endif |
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| 68 | { |
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| 69 | switch(k & STRTOG_Retmask) { |
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| 70 | case STRTOG_NoNumber: |
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| 71 | case STRTOG_Zero: |
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| 72 | L[0] = L[1] = L[2] = L[3] = L[4] = 0; |
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| 73 | break; |
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| 74 | |||
| 75 | case STRTOG_Denormal: |
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| 76 | L[_0] = 0; |
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| 77 | goto normal_bits; |
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| 78 | |||
| 79 | case STRTOG_Normal: |
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| 80 | case STRTOG_NaNbits: |
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| 81 | L[_0] = exp + 0x3fff + 63; |
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| 82 | normal_bits: |
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| 83 | L[_4] = (__UShort)bits[0]; |
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| 84 | L[_3] = (__UShort)(bits[0] >> 16); |
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| 85 | L[_2] = (__UShort)bits[1]; |
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| 86 | L[_1] = (__UShort)(bits[1] >> 16); |
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| 87 | break; |
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| 88 | |||
| 89 | case STRTOG_Infinite: |
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| 90 | L[_0] = 0x7fff; |
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| 6536 | serge | 91 | L[_1] = 0x8000; |
| 92 | L[_2] = L[_3] = L[_4] = 0; |
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| 6099 | serge | 93 | break; |
| 94 | |||
| 95 | case STRTOG_NaN: |
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| 96 | L[0] = ldus_QNAN0; |
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| 97 | L[1] = ldus_QNAN1; |
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| 98 | L[2] = ldus_QNAN2; |
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| 99 | L[3] = ldus_QNAN3; |
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| 100 | L[4] = ldus_QNAN4; |
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| 101 | } |
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| 102 | if (k & STRTOG_Neg) |
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| 103 | L[_0] |= 0x8000; |
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| 104 | } |
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| 105 | |||
| 106 | int |
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| 107 | #ifdef KR_headers |
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| 108 | _strtorx_r(p, s, sp, rounding, L) struct _reent *p; const char *s; char **sp; int rounding; void *L; |
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| 109 | #else |
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| 110 | _strtorx_r(struct _reent *p, const char *s, char **sp, int rounding, void *L) |
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| 111 | #endif |
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| 112 | { |
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| 113 | static FPI fpi0 = { 64, 1-16383-64+1, 32766 - 16383 - 64 + 1, 1, SI }; |
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| 114 | FPI *fpi, fpi1; |
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| 115 | __ULong bits[2]; |
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| 116 | Long exp; |
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| 117 | int k; |
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| 118 | |||
| 119 | fpi = &fpi0; |
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| 120 | if (rounding != FPI_Round_near) { |
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| 121 | fpi1 = fpi0; |
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| 122 | fpi1.rounding = rounding; |
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| 123 | fpi = &fpi1; |
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| 124 | } |
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| 125 | k = _strtodg_r(p, s, sp, fpi, &exp, bits); |
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| 126 | ULtox((__UShort*)L, bits, exp, k); |
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| 127 | return k; |
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| 128 | } |
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| 129 | |||
| 130 | #endif /* _HAVE_LONG_DOUBLE && !_LDBL_EQ_DBL */ |