1 /* Copyright (C) 2007-2013 Free Software Foundation, Inc. 2 3 This file is part of GCC. 4 5 GCC is free software; you can redistribute it and/or modify it under 6 the terms of the GNU General Public License as published by the Free 7 Software Foundation; either version 3, or (at your option) any later 8 version. 9 10 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 11 WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 for more details. 14 15 Under Section 7 of GPL version 3, you are granted additional 16 permissions described in the GCC Runtime Library Exception, version 17 3.1, as published by the Free Software Foundation. 18 19 You should have received a copy of the GNU General Public License and 20 a copy of the GCC Runtime Library Exception along with this program; 21 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 22 <http://www.gnu.org/licenses/>. */ 23 24 #define decimal128FromString __dpd128FromString 25 #define decimal128ToString __dpd128ToString 26 #define decimal128ToEngString __dpd128ToEngString 27 #define decimal128FromNumber __dpd128FromNumber 28 #define decimal128ToNumber __dpd128ToNumber 29 30 #include "dpd/decimal128.c" 31 32 #undef decimal128FromString 33 #undef decimal128ToString 34 #undef decimal128ToEngString 35 #undef decimal128FromNumber 36 #undef decimal128ToNumber 37 38 #include "bid-dpd.h" 39 40 #ifdef IN_LIBGCC2 41 #define decimal128FromString __decimal128FromString 42 #define decimal128ToString __decimal128ToString 43 #define decimal128ToEngString __decimal128ToEngString 44 #define decimal128FromNumber __decimal128FromNumber 45 #define decimal128ToNumber __decimal128ToNumber 46 #endif 47 48 decimal128 *decimal128FromString (decimal128 *, const char *, decContext *); 49 char *decimal128ToString (const decimal128 *, char *); 50 char *decimal128ToEngString (const decimal128 *, char *); 51 decimal128 *decimal128FromNumber (decimal128 *, const decNumber *, decContext *); 52 decNumber *decimal128ToNumber (const decimal128 *, decNumber *); 53 54 void __host_to_ieee_128 (_Decimal128 in, decimal128 *out); 55 void __ieee_to_host_128 (decimal128 in, _Decimal128 *out); 56 57 decimal128 * 58 decimal128FromNumber (decimal128 *d128, const decNumber *dn, 59 decContext *set) 60 { 61 /* decimal128 and _Decimal128 are different types. */ 62 union 63 { 64 _Decimal128 _Dec; 65 decimal128 dec; 66 } u; 67 68 __dpd128FromNumber (d128, dn, set); 69 70 /* __dpd128FromNumber returns in big endian. But _dpd_to_bid128 takes 71 host endian. */ 72 __ieee_to_host_128 (*d128, &u._Dec); 73 74 /* Convert DPD to BID. */ 75 _dpd_to_bid128 (&u._Dec, &u._Dec); 76 77 /* dfp.c is in bid endian. */ 78 __host_to_ieee_128 (u._Dec, &u.dec); 79 80 /* d128 is returned as a pointer to _Decimal128 here. */ 81 *d128 = u.dec; 82 83 return d128; 84 } 85 86 decNumber * 87 decimal128ToNumber (const decimal128 *bid128, decNumber *dn) 88 { 89 /* decimal128 and _Decimal128 are different types. */ 90 union 91 { 92 _Decimal128 _Dec; 93 decimal128 dec; 94 } u; 95 96 /* bid128 is a pointer to _Decimal128 in bid endian. But _bid_to_dpd128 97 takes host endian. */ 98 __ieee_to_host_128 (*bid128, &u._Dec); 99 100 /* Convert BID to DPD. */ 101 _bid_to_dpd128 (&u._Dec, &u._Dec); 102 103 /* __dpd128ToNumber is in bid endian. */ 104 __host_to_ieee_128 (u._Dec, &u.dec); 105 106 return __dpd128ToNumber (&u.dec, dn); 107 } 108 109 char * 110 decimal128ToString (const decimal128 *d128, char *string) 111 { 112 decNumber dn; /* work */ 113 decimal128ToNumber (d128, &dn); 114 decNumberToString (&dn, string); 115 return string; 116 } 117 118 char * 119 decimal128ToEngString (const decimal128 *d128, char *string) 120 { 121 decNumber dn; /* work */ 122 decimal128ToNumber (d128, &dn); 123 decNumberToEngString (&dn, string); 124 return string; 125 } 126 127 decimal128 * 128 decimal128FromString (decimal128 *result, const char *string, 129 decContext *set) 130 { 131 decContext dc; /* work */ 132 decNumber dn; /* .. */ 133 134 decContextDefault (&dc, DEC_INIT_DECIMAL128); /* no traps, please */ 135 dc.round = set->round; /* use supplied rounding */ 136 137 decNumberFromString (&dn, string, &dc); /* will round if needed */ 138 decimal128FromNumber (result, &dn, &dc); 139 if (dc.status != 0) 140 { /* something happened */ 141 decContextSetStatus (set, dc.status); /* .. pass it on */ 142 } 143 return result; 144 } 145