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1 | /* Copyright (C) 2007 |
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 2, 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 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
20 | ||
21 | /* As a special exception, if you link this library with other files, | |
22 | some of which are compiled with GCC, to produce an executable, | |
23 | this library does not by itself cause the resulting executable | |
24 | to be covered by the GNU General Public License. | |
25 | This exception does not however invalidate any other reasons why | |
26 | the executable file might be covered by the GNU General Public License. */ | |
27 | ||
28 | #define decimal64FromString __dpd64FromString | |
29 | #define decimal64ToString __dpd64ToString | |
30 | #define decimal64ToEngString __dpd64ToEngString | |
31 | #define decimal64FromNumber __dpd64FromNumber | |
32 | #define decimal64ToNumber __dpd64ToNumber | |
33 | ||
34 | #include "dpd/decimal64.c" | |
35 | ||
36 | #undef decimal64FromString | |
37 | #undef decimal64ToString | |
38 | #undef decimal64ToEngString | |
39 | #undef decimal64FromNumber | |
40 | #undef decimal64ToNumber | |
41 | ||
42 | #include "bid-dpd.h" | |
43 | ||
44 | #ifdef IN_LIBGCC2 | |
45 | #define decimal64FromString __decimal64FromString | |
46 | #define decimal64ToString __decimal64ToString | |
47 | #define decimal64ToEngString __decimal64ToEngString | |
48 | #define decimal64FromNumber __decimal64FromNumber | |
49 | #define decimal64ToNumber __decimal64ToNumber | |
50 | #endif | |
51 | ||
52 | decimal64 *decimal64FromString (decimal64 *, const char *, decContext *); | |
53 | char *decimal64ToString (const decimal64 *, char *); | |
54 | char *decimal64ToEngString (const decimal64 *, char *); | |
55 | decimal64 *decimal64FromNumber (decimal64 *, const decNumber *, decContext *); | |
56 | decNumber *decimal64ToNumber (const decimal64 *, decNumber *); | |
57 | ||
58 | void __host_to_ieee_64 (_Decimal64 in, decimal64 *out); | |
59 | void __ieee_to_host_64 (decimal64 in, _Decimal64 *out); | |
60 | ||
61 | decimal64 * | |
62 | decimal64FromNumber (decimal64 *d64, const decNumber *dn, | |
63 | decContext *set) | |
64 | { | |
65 | /* decimal64 and _Decimal64 are different types. */ | |
66 | union | |
67 | { | |
68 | _Decimal64 _Dec; | |
69 | decimal64 dec; | |
70 | } u; | |
71 | ||
72 | __dpd64FromNumber (d64, dn, set); | |
73 | ||
74 | /* __dpd64FromNumber returns in big endian. But _dpd_to_bid64 takes | |
75 | host endian. */ | |
76 | __ieee_to_host_64 (*d64, &u._Dec); | |
77 | ||
78 | /* Convert DPD to BID. */ | |
79 | _dpd_to_bid64 (&u._Dec, &u._Dec); | |
80 | ||
81 | /* dfp.c is in bid endian. */ | |
82 | __host_to_ieee_64 (u._Dec, &u.dec); | |
83 | ||
84 | /* d64 is returned as a pointer to _Decimal64 here. */ | |
85 | *d64 = u.dec; | |
86 | ||
87 | return d64; | |
88 | } | |
89 | ||
90 | decNumber * | |
91 | decimal64ToNumber (const decimal64 *bid64, decNumber *dn) | |
92 | { | |
93 | /* decimal64 and _Decimal64 are different types. */ | |
94 | union | |
95 | { | |
96 | _Decimal64 _Dec; | |
97 | decimal64 dec; | |
98 | } u; | |
99 | ||
100 | /* bid64 is a pointer to _Decimal64 in bid endian. But _bid_to_dpd64 | |
101 | takes host endian. */ | |
102 | __ieee_to_host_64 (*bid64, &u._Dec); | |
103 | ||
104 | /* Convert BID to DPD. */ | |
105 | _bid_to_dpd64 (&u._Dec, &u._Dec); | |
106 | ||
107 | /* __dpd64ToNumber is in bid endian. */ | |
108 | __host_to_ieee_64 (u._Dec, &u.dec); | |
109 | ||
110 | return __dpd64ToNumber (&u.dec, dn); | |
111 | } | |
112 | ||
113 | char * | |
114 | decimal64ToString (const decimal64 *d64, char *string) | |
115 | { | |
116 | decNumber dn; /* work */ | |
117 | decimal64ToNumber (d64, &dn); | |
118 | decNumberToString (&dn, string); | |
119 | return string; | |
120 | } | |
121 | ||
122 | char * | |
123 | decimal64ToEngString (const decimal64 *d64, char *string) | |
124 | { | |
125 | decNumber dn; /* work */ | |
126 | decimal64ToNumber (d64, &dn); | |
127 | decNumberToEngString (&dn, string); | |
128 | return string; | |
129 | } | |
130 | ||
131 | decimal64 * | |
132 | decimal64FromString (decimal64 *result, const char *string, | |
133 | decContext *set) | |
134 | { | |
135 | decContext dc; /* work */ | |
136 | decNumber dn; /* .. */ | |
137 | ||
138 | decContextDefault (&dc, DEC_INIT_DECIMAL64); /* no traps, please */ | |
139 | dc.round = set->round; /* use supplied rounding */ | |
140 | ||
141 | decNumberFromString (&dn, string, &dc); /* will round if needed */ | |
142 | decimal64FromNumber (result, &dn, &dc); | |
143 | if (dc.status != 0) | |
144 | { /* something happened */ | |
145 | decContextSetStatus (set, dc.status); /* .. pass it on */ | |
146 | } | |
147 | return result; | |
148 | } |