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 /* $FreeBSD$ */ 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 #endif 47 #ifdef IEEE_8087 48 #define _0 3 49 #define _1 2 50 #define _2 1 51 #define _3 0 52 #endif 53 54 void 55 #ifdef KR_headers 56 ULtoQ(L, bits, exp, k) ULong *L; ULong *bits; Long exp; int k; 57 #else 58 ULtoQ(ULong *L, ULong *bits, Long exp, int k) 59 #endif 60 { 61 switch(k & STRTOG_Retmask) { 62 case STRTOG_NoNumber: 63 case STRTOG_Zero: 64 L[0] = L[1] = L[2] = L[3] = 0; 65 break; 66 67 case STRTOG_Normal: 68 L[_3] = bits[0]; 69 L[_2] = bits[1]; 70 L[_1] = bits[2]; 71 L[_0] = (bits[3] & ~0x10000) | ((exp + 0x3fff + 112) << 16); 72 break; 73 74 case STRTOG_NaNbits: 75 L[_3] = bits[0]; 76 L[_2] = bits[1]; 77 L[_1] = bits[2]; 78 L[_0] = (bits[3] & ~0x10000) 79 | (((exp + 0x3fff + 112) << 16) | (1 << 15)); 80 break; 81 82 case STRTOG_Denormal: 83 L[_3] = bits[0]; 84 L[_2] = bits[1]; 85 L[_1] = bits[2]; 86 L[_0] = bits[3]; 87 break; 88 89 case STRTOG_Infinite: 90 L[_0] = 0x7fff0000; 91 L[_1] = L[_2] = L[_3] = 0; 92 break; 93 94 case STRTOG_NaN: 95 L[0] = ld_QNAN0; 96 L[1] = ld_QNAN1; 97 L[2] = ld_QNAN2; 98 L[3] = ld_QNAN3; 99 } 100 if (k & STRTOG_Neg) 101 L[_0] |= 0x80000000L; 102 } 103 104 int 105 #ifdef KR_headers 106 strtorQ_l(s, sp, rounding, L, locale) CONST char *s; char **sp; int rounding; 107 void *L; locale_t locale; 108 #else 109 strtorQ_l(CONST char *s, char **sp, int rounding, void *L, locale_t locale) 110 #endif 111 { 112 static FPI fpi0 = { 113, 1-16383-113+1, 32766-16383-113+1, 1, SI }; 113 FPI *fpi, fpi1; 114 ULong bits[4]; 115 Long exp; 116 int k; 117 118 fpi = &fpi0; 119 if (rounding != FPI_Round_near) { 120 fpi1 = fpi0; 121 fpi1.rounding = rounding; 122 fpi = &fpi1; 123 } 124 k = strtodg_l(s, sp, fpi, &exp, bits, locale); 125 ULtoQ((ULong*)L, bits, exp, k); 126 return k; 127 } 128