1/* Copyright (C) 2007-2018 Free Software Foundation, Inc. 2 3This file is part of GCC. 4 5GCC is free software; you can redistribute it and/or modify it under 6the terms of the GNU General Public License as published by the Free 7Software Foundation; either version 3, or (at your option) any later 8version. 9 10GCC is distributed in the hope that it will be useful, but WITHOUT ANY 11WARRANTY; without even the implied warranty of MERCHANTABILITY or 12FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13for more details. 14 15Under Section 7 of GPL version 3, you are granted additional 16permissions described in the GCC Runtime Library Exception, version 173.1, as published by the Free Software Foundation. 18 19You should have received a copy of the GNU General Public License and 20a copy of the GCC Runtime Library Exception along with this program; 21see 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 48decimal128 *decimal128FromString (decimal128 *, const char *, decContext *); 49char *decimal128ToString (const decimal128 *, char *); 50char *decimal128ToEngString (const decimal128 *, char *); 51decimal128 *decimal128FromNumber (decimal128 *, const decNumber *, decContext *); 52decNumber *decimal128ToNumber (const decimal128 *, decNumber *); 53 54void __host_to_ieee_128 (_Decimal128 in, decimal128 *out); 55void __ieee_to_host_128 (decimal128 in, _Decimal128 *out); 56 57decimal128 * 58decimal128FromNumber (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 86decNumber * 87decimal128ToNumber (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 109char * 110decimal128ToString (const decimal128 *d128, char *string) 111{ 112 decNumber dn; /* work */ 113 decimal128ToNumber (d128, &dn); 114 decNumberToString (&dn, string); 115 return string; 116} 117 118char * 119decimal128ToEngString (const decimal128 *d128, char *string) 120{ 121 decNumber dn; /* work */ 122 decimal128ToNumber (d128, &dn); 123 decNumberToEngString (&dn, string); 124 return string; 125} 126 127decimal128 * 128decimal128FromString (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