1/* Copyright (C) 2007-2017 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 decimal32FromString __dpd32FromString
25#define decimal32ToString __dpd32ToString
26#define decimal32ToEngString __dpd32ToEngString
27#define decimal32FromNumber __dpd32FromNumber
28#define decimal32ToNumber __dpd32ToNumber
29
30#include "dpd/decimal32.c"
31
32#undef decimal32FromString
33#undef decimal32ToString
34#undef decimal32ToEngString
35#undef decimal32FromNumber
36#undef decimal32ToNumber
37
38#include "bid-dpd.h"
39
40#ifdef IN_LIBGCC2
41#define decimal32FromString __decimal32FromString
42#define decimal32ToString __decimal32ToString
43#define decimal32ToEngString __decimal32ToEngString
44#define decimal32FromNumber __decimal32FromNumber
45#define decimal32ToNumber __decimal32ToNumber
46#endif
47
48decimal32 *decimal32FromString (decimal32 *, const char *, decContext *);
49char *decimal32ToString (const decimal32 *, char *);
50char *decimal32ToEngString (const decimal32 *, char *);
51decimal32 *decimal32FromNumber (decimal32 *, const decNumber *, decContext *);
52decNumber *decimal32ToNumber (const decimal32 *, decNumber *);
53
54void __host_to_ieee_32 (_Decimal32 in, decimal32 *out);
55void __ieee_to_host_32 (decimal32 in, _Decimal32 *out);
56
57decimal32 *
58decimal32FromNumber (decimal32 *d32, const decNumber *dn,
59 decContext *set)
60{
61 /* decimal32 and _Decimal32 are different types. */
62 union
63 {
64 _Decimal32 _Dec;
65 decimal32 dec;
66 } u;
67
68 __dpd32FromNumber (d32, dn, set);
69
70 /* __dpd32FromNumber returns in big endian. But _dpd_to_bid32 takes
71 host endian. */
72 __ieee_to_host_32 (*d32, &u._Dec);
73
74 /* Convert DPD to BID. */
75 _dpd_to_bid32 (&u._Dec, &u._Dec);
76
77 /* dfp.c is in bid endian. */
78 __host_to_ieee_32 (u._Dec, &u.dec);
79
80 /* d32 is returned as a pointer to _Decimal32 here. */
81 *d32 = u.dec;
82
83 return d32;
84}
85
86decNumber *
87decimal32ToNumber (const decimal32 *bid32, decNumber *dn)
88{
89 /* decimal32 and _Decimal32 are different types. */
90 union
91 {
92 _Decimal32 _Dec;
93 decimal32 dec;
94 } u;
95
96 /* bid32 is a pointer to _Decimal32 in bid endian. But _bid_to_dpd32
97 takes host endian. */
98 __ieee_to_host_32 (*bid32, &u._Dec);
99
100 /* Convert BID to DPD. */
101 _bid_to_dpd32 (&u._Dec, &u._Dec);
102
103 /* __dpd32ToNumber is in bid endian. */
104 __host_to_ieee_32 (u._Dec, &u.dec);
105
106 return __dpd32ToNumber (&u.dec, dn);
107}
108
109char *
110decimal32ToString (const decimal32 *d32, char *string)
111{
112 decNumber dn; /* work */
113 decimal32ToNumber (d32, &dn);
114 decNumberToString (&dn, string);
115 return string;
116}
117
118char *
119decimal32ToEngString (const decimal32 *d32, char *string)
120{
121 decNumber dn; /* work */
122 decimal32ToNumber (d32, &dn);
123 decNumberToEngString (&dn, string);
124 return string;
125}
126
127decimal32 *
128decimal32FromString (decimal32 *result, const char *string,
129 decContext *set)
130{
131 decContext dc; /* work */
132 decNumber dn; /* .. */
133
134 decContextDefault (&dc, DEC_INIT_DECIMAL32); /* no traps, please */
135 dc.round = set->round; /* use supplied rounding */
136
137 decNumberFromString (&dn, string, &dc); /* will round if needed */
138 decimal32FromNumber (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