1 /* Copyright (C) 2007, 2009 2 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 Under Section 7 of GPL version 3, you are granted additional 17 permissions described in the GCC Runtime Library Exception, version 18 3.1, as published by the Free Software Foundation. 19 20 You should have received a copy of the GNU General Public License and 21 a copy of the GCC Runtime Library Exception along with this program; 22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 <http://www.gnu.org/licenses/>. */ 24 25 #define decimal64FromString __dpd64FromString 26 #define decimal64ToString __dpd64ToString 27 #define decimal64ToEngString __dpd64ToEngString 28 #define decimal64FromNumber __dpd64FromNumber 29 #define decimal64ToNumber __dpd64ToNumber 30 31 #include "dpd/decimal64.c" 32 33 #undef decimal64FromString 34 #undef decimal64ToString 35 #undef decimal64ToEngString 36 #undef decimal64FromNumber 37 #undef decimal64ToNumber 38 39 #include "bid-dpd.h" 40 41 #ifdef IN_LIBGCC2 42 #define decimal64FromString __decimal64FromString 43 #define decimal64ToString __decimal64ToString 44 #define decimal64ToEngString __decimal64ToEngString 45 #define decimal64FromNumber __decimal64FromNumber 46 #define decimal64ToNumber __decimal64ToNumber 47 #endif 48 49 decimal64 *decimal64FromString (decimal64 *, const char *, decContext *); 50 char *decimal64ToString (const decimal64 *, char *); 51 char *decimal64ToEngString (const decimal64 *, char *); 52 decimal64 *decimal64FromNumber (decimal64 *, const decNumber *, decContext *); 53 decNumber *decimal64ToNumber (const decimal64 *, decNumber *); 54 55 void __host_to_ieee_64 (_Decimal64 in, decimal64 *out); 56 void __ieee_to_host_64 (decimal64 in, _Decimal64 *out); 57 58 decimal64 * 59 decimal64FromNumber (decimal64 *d64, const decNumber *dn, 60 decContext *set) 61 { 62 /* decimal64 and _Decimal64 are different types. */ 63 union 64 { 65 _Decimal64 _Dec; 66 decimal64 dec; 67 } u; 68 69 __dpd64FromNumber (d64, dn, set); 70 71 /* __dpd64FromNumber returns in big endian. But _dpd_to_bid64 takes 72 host endian. */ 73 __ieee_to_host_64 (*d64, &u._Dec); 74 75 /* Convert DPD to BID. */ 76 _dpd_to_bid64 (&u._Dec, &u._Dec); 77 78 /* dfp.c is in bid endian. */ 79 __host_to_ieee_64 (u._Dec, &u.dec); 80 81 /* d64 is returned as a pointer to _Decimal64 here. */ 82 *d64 = u.dec; 83 84 return d64; 85 } 86 87 decNumber * 88 decimal64ToNumber (const decimal64 *bid64, decNumber *dn) 89 { 90 /* decimal64 and _Decimal64 are different types. */ 91 union 92 { 93 _Decimal64 _Dec; 94 decimal64 dec; 95 } u; 96 97 /* bid64 is a pointer to _Decimal64 in bid endian. But _bid_to_dpd64 98 takes host endian. */ 99 __ieee_to_host_64 (*bid64, &u._Dec); 100 101 /* Convert BID to DPD. */ 102 _bid_to_dpd64 (&u._Dec, &u._Dec); 103 104 /* __dpd64ToNumber is in bid endian. */ 105 __host_to_ieee_64 (u._Dec, &u.dec); 106 107 return __dpd64ToNumber (&u.dec, dn); 108 } 109 110 char * 111 decimal64ToString (const decimal64 *d64, char *string) 112 { 113 decNumber dn; /* work */ 114 decimal64ToNumber (d64, &dn); 115 decNumberToString (&dn, string); 116 return string; 117 } 118 119 char * 120 decimal64ToEngString (const decimal64 *d64, char *string) 121 { 122 decNumber dn; /* work */ 123 decimal64ToNumber (d64, &dn); 124 decNumberToEngString (&dn, string); 125 return string; 126 } 127 128 decimal64 * 129 decimal64FromString (decimal64 *result, const char *string, 130 decContext *set) 131 { 132 decContext dc; /* work */ 133 decNumber dn; /* .. */ 134 135 decContextDefault (&dc, DEC_INIT_DECIMAL64); /* no traps, please */ 136 dc.round = set->round; /* use supplied rounding */ 137 138 decNumberFromString (&dn, string, &dc); /* will round if needed */ 139 decimal64FromNumber (result, &dn, &dc); 140 if (dc.status != 0) 141 { /* something happened */ 142 decContextSetStatus (set, dc.status); /* .. pass it on */ 143 } 144 return result; 145 } 146