OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [libdecnumber/] [bid/] [decimal32.c] - Blame information for rev 827

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 24 jeremybenn
/* 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 decimal32FromString __dpd32FromString
29
#define decimal32ToString __dpd32ToString
30
#define decimal32ToEngString __dpd32ToEngString
31
#define decimal32FromNumber __dpd32FromNumber
32
#define decimal32ToNumber __dpd32ToNumber
33
 
34
#include "dpd/decimal32.c"
35
 
36
#undef decimal32FromString
37
#undef decimal32ToString
38
#undef decimal32ToEngString
39
#undef decimal32FromNumber
40
#undef decimal32ToNumber
41
 
42
#include "bid-dpd.h"
43
 
44
#ifdef IN_LIBGCC2
45
#define decimal32FromString __decimal32FromString
46
#define decimal32ToString __decimal32ToString
47
#define decimal32ToEngString __decimal32ToEngString
48
#define decimal32FromNumber __decimal32FromNumber
49
#define decimal32ToNumber __decimal32ToNumber
50
#endif
51
 
52
decimal32 *decimal32FromString (decimal32 *, const char *, decContext *);
53
char *decimal32ToString (const decimal32 *, char *);
54
char *decimal32ToEngString (const decimal32 *, char *);
55
decimal32 *decimal32FromNumber (decimal32 *, const decNumber *, decContext *);
56
decNumber *decimal32ToNumber (const decimal32 *, decNumber *);
57
 
58
void __host_to_ieee_32 (_Decimal32 in, decimal32 *out);
59
void __ieee_to_host_32 (decimal32 in, _Decimal32 *out);
60
 
61
decimal32 *
62
decimal32FromNumber (decimal32 *d32, const decNumber *dn,
63
                      decContext *set)
64
{
65
  /* decimal32 and _Decimal32 are different types.  */
66
  union
67
    {
68
      _Decimal32 _Dec;
69
      decimal32 dec;
70
    } u;
71
 
72
  __dpd32FromNumber (d32, dn, set);
73
 
74
  /* __dpd32FromNumber returns in big endian. But _dpd_to_bid32 takes
75
     host endian. */
76
  __ieee_to_host_32 (*d32, &u._Dec);
77
 
78
  /* Convert DPD to BID.  */
79
  _dpd_to_bid32 (&u._Dec, &u._Dec);
80
 
81
  /* dfp.c is in bid endian. */
82
  __host_to_ieee_32 (u._Dec, &u.dec);
83
 
84
  /* d32 is returned as a pointer to _Decimal32 here.  */
85
  *d32 = u.dec;
86
 
87
  return d32;
88
}
89
 
90
decNumber *
91
decimal32ToNumber (const decimal32 *bid32, decNumber *dn)
92
{
93
  /* decimal32 and _Decimal32 are different types.  */
94
  union
95
    {
96
      _Decimal32 _Dec;
97
      decimal32 dec;
98
    } u;
99
 
100
  /* bid32 is a pointer to _Decimal32 in bid endian. But _bid_to_dpd32
101
     takes host endian.  */
102
  __ieee_to_host_32 (*bid32, &u._Dec);
103
 
104
  /* Convert BID to DPD.  */
105
  _bid_to_dpd32 (&u._Dec, &u._Dec);
106
 
107
  /* __dpd32ToNumber is in bid endian.  */
108
  __host_to_ieee_32 (u._Dec, &u.dec);
109
 
110
  return __dpd32ToNumber (&u.dec, dn);
111
}
112
 
113
char *
114
decimal32ToString (const decimal32 *d32, char *string)
115
{
116
  decNumber dn;                 /* work */
117
  decimal32ToNumber (d32, &dn);
118
  decNumberToString (&dn, string);
119
  return string;
120
}
121
 
122
char *
123
decimal32ToEngString (const decimal32 *d32, char *string)
124
{
125
  decNumber dn;                 /* work */
126
  decimal32ToNumber (d32, &dn);
127
  decNumberToEngString (&dn, string);
128
  return string;
129
}
130
 
131
decimal32 *
132
decimal32FromString (decimal32 *result, const char *string,
133
                      decContext *set)
134
{
135
  decContext dc;                /* work */
136
  decNumber dn;                 /* .. */
137
 
138
  decContextDefault (&dc, DEC_INIT_DECIMAL32);  /* no traps, please */
139
  dc.round = set->round;        /* use supplied rounding */
140
 
141
  decNumberFromString (&dn, string, &dc);       /* will round if needed */
142
  decimal32FromNumber (result, &dn, &dc);
143
  if (dc.status != 0)
144
    {                           /* something happened */
145
      decContextSetStatus (set, dc.status);     /* .. pass it on */
146
    }
147
  return result;
148
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.