Daily bump.
[official-gcc.git] / libdecnumber / bid / decimal128.c
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1 /* Copyright (C) 2007-2017 Free Software Foundation, Inc.
3 This file is part of GCC.
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.
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.
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.
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/>. */
24 #define decimal128FromString __dpd128FromString
25 #define decimal128ToString __dpd128ToString
26 #define decimal128ToEngString __dpd128ToEngString
27 #define decimal128FromNumber __dpd128FromNumber
28 #define decimal128ToNumber __dpd128ToNumber
30 #include "dpd/decimal128.c"
32 #undef decimal128FromString
33 #undef decimal128ToString
34 #undef decimal128ToEngString
35 #undef decimal128FromNumber
36 #undef decimal128ToNumber
38 #include "bid-dpd.h"
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
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 *);
54 void __host_to_ieee_128 (_Decimal128 in, decimal128 *out);
55 void __ieee_to_host_128 (decimal128 in, _Decimal128 *out);
57 decimal128 *
58 decimal128FromNumber (decimal128 *d128, const decNumber *dn,
59 decContext *set)
61 /* decimal128 and _Decimal128 are different types. */
62 union
64 _Decimal128 _Dec;
65 decimal128 dec;
66 } u;
68 __dpd128FromNumber (d128, dn, set);
70 /* __dpd128FromNumber returns in big endian. But _dpd_to_bid128 takes
71 host endian. */
72 __ieee_to_host_128 (*d128, &u._Dec);
74 /* Convert DPD to BID. */
75 _dpd_to_bid128 (&u._Dec, &u._Dec);
77 /* dfp.c is in bid endian. */
78 __host_to_ieee_128 (u._Dec, &u.dec);
80 /* d128 is returned as a pointer to _Decimal128 here. */
81 *d128 = u.dec;
83 return d128;
86 decNumber *
87 decimal128ToNumber (const decimal128 *bid128, decNumber *dn)
89 /* decimal128 and _Decimal128 are different types. */
90 union
92 _Decimal128 _Dec;
93 decimal128 dec;
94 } u;
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);
100 /* Convert BID to DPD. */
101 _bid_to_dpd128 (&u._Dec, &u._Dec);
103 /* __dpd128ToNumber is in bid endian. */
104 __host_to_ieee_128 (u._Dec, &u.dec);
106 return __dpd128ToNumber (&u.dec, dn);
109 char *
110 decimal128ToString (const decimal128 *d128, char *string)
112 decNumber dn; /* work */
113 decimal128ToNumber (d128, &dn);
114 decNumberToString (&dn, string);
115 return string;
118 char *
119 decimal128ToEngString (const decimal128 *d128, char *string)
121 decNumber dn; /* work */
122 decimal128ToNumber (d128, &dn);
123 decNumberToEngString (&dn, string);
124 return string;
127 decimal128 *
128 decimal128FromString (decimal128 *result, const char *string,
129 decContext *set)
131 decContext dc; /* work */
132 decNumber dn; /* .. */
134 decContextDefault (&dc, DEC_INIT_DECIMAL128); /* no traps, please */
135 dc.round = set->round; /* use supplied rounding */
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 */
143 return result;