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

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libdecnumber/] [bid/] [decimal32.c] - Blame information for rev 790

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

Line No. Rev Author Line
1 731 jeremybenn
/* Copyright (C) 2007, 2009
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 3, 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
Under Section 7 of GPL version 3, you are granted additional
17
permissions described in the GCC Runtime Library Exception, version
18
3.1, as published by the Free Software Foundation.
19
 
20
You should have received a copy of the GNU General Public License and
21
a copy of the GCC Runtime Library Exception along with this program;
22
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23
<http://www.gnu.org/licenses/>.  */
24
 
25
#define decimal32FromString __dpd32FromString
26
#define decimal32ToString __dpd32ToString
27
#define decimal32ToEngString __dpd32ToEngString
28
#define decimal32FromNumber __dpd32FromNumber
29
#define decimal32ToNumber __dpd32ToNumber
30
 
31
#include "dpd/decimal32.c"
32
 
33
#undef decimal32FromString
34
#undef decimal32ToString
35
#undef decimal32ToEngString
36
#undef decimal32FromNumber
37
#undef decimal32ToNumber
38
 
39
#include "bid-dpd.h"
40
 
41
#ifdef IN_LIBGCC2
42
#define decimal32FromString __decimal32FromString
43
#define decimal32ToString __decimal32ToString
44
#define decimal32ToEngString __decimal32ToEngString
45
#define decimal32FromNumber __decimal32FromNumber
46
#define decimal32ToNumber __decimal32ToNumber
47
#endif
48
 
49
decimal32 *decimal32FromString (decimal32 *, const char *, decContext *);
50
char *decimal32ToString (const decimal32 *, char *);
51
char *decimal32ToEngString (const decimal32 *, char *);
52
decimal32 *decimal32FromNumber (decimal32 *, const decNumber *, decContext *);
53
decNumber *decimal32ToNumber (const decimal32 *, decNumber *);
54
 
55
void __host_to_ieee_32 (_Decimal32 in, decimal32 *out);
56
void __ieee_to_host_32 (decimal32 in, _Decimal32 *out);
57
 
58
decimal32 *
59
decimal32FromNumber (decimal32 *d32, const decNumber *dn,
60
                      decContext *set)
61
{
62
  /* decimal32 and _Decimal32 are different types.  */
63
  union
64
    {
65
      _Decimal32 _Dec;
66
      decimal32 dec;
67
    } u;
68
 
69
  __dpd32FromNumber (d32, dn, set);
70
 
71
  /* __dpd32FromNumber returns in big endian. But _dpd_to_bid32 takes
72
     host endian. */
73
  __ieee_to_host_32 (*d32, &u._Dec);
74
 
75
  /* Convert DPD to BID.  */
76
  _dpd_to_bid32 (&u._Dec, &u._Dec);
77
 
78
  /* dfp.c is in bid endian. */
79
  __host_to_ieee_32 (u._Dec, &u.dec);
80
 
81
  /* d32 is returned as a pointer to _Decimal32 here.  */
82
  *d32 = u.dec;
83
 
84
  return d32;
85
}
86
 
87
decNumber *
88
decimal32ToNumber (const decimal32 *bid32, decNumber *dn)
89
{
90
  /* decimal32 and _Decimal32 are different types.  */
91
  union
92
    {
93
      _Decimal32 _Dec;
94
      decimal32 dec;
95
    } u;
96
 
97
  /* bid32 is a pointer to _Decimal32 in bid endian. But _bid_to_dpd32
98
     takes host endian.  */
99
  __ieee_to_host_32 (*bid32, &u._Dec);
100
 
101
  /* Convert BID to DPD.  */
102
  _bid_to_dpd32 (&u._Dec, &u._Dec);
103
 
104
  /* __dpd32ToNumber is in bid endian.  */
105
  __host_to_ieee_32 (u._Dec, &u.dec);
106
 
107
  return __dpd32ToNumber (&u.dec, dn);
108
}
109
 
110
char *
111
decimal32ToString (const decimal32 *d32, char *string)
112
{
113
  decNumber dn;                 /* work */
114
  decimal32ToNumber (d32, &dn);
115
  decNumberToString (&dn, string);
116
  return string;
117
}
118
 
119
char *
120
decimal32ToEngString (const decimal32 *d32, char *string)
121
{
122
  decNumber dn;                 /* work */
123
  decimal32ToNumber (d32, &dn);
124
  decNumberToEngString (&dn, string);
125
  return string;
126
}
127
 
128
decimal32 *
129
decimal32FromString (decimal32 *result, const char *string,
130
                      decContext *set)
131
{
132
  decContext dc;                /* work */
133
  decNumber dn;                 /* .. */
134
 
135
  decContextDefault (&dc, DEC_INIT_DECIMAL32);  /* no traps, please */
136
  dc.round = set->round;        /* use supplied rounding */
137
 
138
  decNumberFromString (&dn, string, &dc);       /* will round if needed */
139
  decimal32FromNumber (result, &dn, &dc);
140
  if (dc.status != 0)
141
    {                           /* something happened */
142
      decContextSetStatus (set, dc.status);     /* .. pass it on */
143
    }
144
  return result;
145
}

powered by: WebSVN 2.1.0

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