summaryrefslogtreecommitdiff
path: root/printf.c
blob: 70d2a75b76d67b3ad7fd6df05439b0ec403223d7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
/* mpfr_printf -- printf function and friends.

Copyright 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Contributed by the Arenaire and Cacao projects, INRIA.

This file is part of the GNU MPFR Library.

The GNU MPFR Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version.

The GNU MPFR Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
License for more details.

You should have received a copy of the GNU Lesser General Public License
along with the GNU MPFR Library; see the file COPYING.LESSER.  If not, see
http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

/* The mpfr_printf-like functions are defined only if stdarg.h exist */
#ifdef HAVE_STDARG

#include <stdarg.h>

#ifndef HAVE_VA_COPY
# ifdef HAVE___VA_COPY
#  define va_copy(dst,src) __va_copy(dst, src)
# else
/* autoconf manual advocates this fallback.
   This is also the solution chosen by gmp */
#  define va_copy(dst,src) \
  do { memcpy(&(dst), &(src), sizeof(va_list)); } while (0)
# endif /* HAVE___VA_COPY */
#endif /* HAVE_VA_COPY */

#include <errno.h>
#include "mpfr-impl.h"

#ifdef _MPFR_H_HAVE_FILE

/* Each printf-like function calls mpfr_vasprintf which
   - returns the number of characters in the returned string excluding the
   terminating null
   - returns -1 and sets the erange flag if the number of produced characters
   exceeds INT_MAX (in that case, also sets errno to EOVERFLOW in POSIX
   systems) */

#define GET_STR_VA(sz, str, fmt, ap)            \
  do                                            \
    {                                           \
      sz = mpfr_vasprintf (&(str), fmt, ap);    \
      if (sz < 0)                               \
        {                                       \
          if (str)                              \
            mpfr_free_str (str);                \
          return -1;                            \
        }                                       \
    } while (0)

#define GET_STR(sz, str, fmt)                   \
  do                                            \
    {                                           \
      va_list ap;                               \
      va_start(ap, fmt);                        \
      sz = mpfr_vasprintf (&(str), fmt, ap);    \
      va_end (ap);                              \
      if (sz < 0)                               \
        {                                       \
          if (str)                              \
            mpfr_free_str (str);                \
          return -1;                            \
        }                                       \
    } while (0)

int
mpfr_printf (const char *fmt, ...)
{
  char *str;
  int ret;

  GET_STR (ret, str, fmt);
  ret = printf ("%s", str);

  mpfr_free_str (str);
  return ret;
}

int
mpfr_vprintf (const char *fmt, va_list ap)
{
  char *str;
  int ret;

  GET_STR_VA (ret, str, fmt, ap);
  ret = printf ("%s", str);

  mpfr_free_str (str);
  return ret;
}


int
mpfr_fprintf (FILE *fp, const char *fmt, ...)
{
  char *str;
  int ret;

  GET_STR (ret, str, fmt);
  ret = fprintf (fp, "%s", str);

  mpfr_free_str (str);
  return ret;
}

int
mpfr_vfprintf (FILE *fp, const char *fmt, va_list ap)
{
  char *str;
  int ret;

  GET_STR_VA (ret, str, fmt, ap);
  ret = fprintf (fp, "%s", str);

  mpfr_free_str (str);
  return ret;
}
#endif /* _MPFR_H_HAVE_FILE */

int
mpfr_sprintf (char *buf, const char *fmt, ...)
{
  char *str;
  int ret;

  GET_STR (ret, str, fmt);
  ret = sprintf (buf, "%s", str);

  mpfr_free_str (str);
  return ret;
}

int
mpfr_vsprintf (char *buf, const char *fmt, va_list ap)
{
  char *str;
  int ret;

  GET_STR_VA (ret, str, fmt, ap);
  ret = sprintf (buf, "%s", str);

  mpfr_free_str (str);
  return ret;
}

int
mpfr_snprintf (char *buf, size_t size, const char *fmt, ...)
{
  char *str;
  int ret;
  size_t min_size;

  GET_STR (ret, str, fmt);

  /* C99 allows SIZE to be zero */
  if (size != 0)
    {
      MPFR_ASSERTN (buf != NULL);
      min_size = (size_t)ret < size ? (size_t)ret : size - 1;
      strncpy (buf, str, min_size);
      buf[min_size] = '\0';
    }

  mpfr_free_str (str);
  return ret;
}

int
mpfr_vsnprintf (char *buf, size_t size, const char *fmt, va_list ap)
{
  char *str;
  int ret;
  int min_size;

  GET_STR_VA (ret, str, fmt, ap);

  /* C99 allows SIZE to be zero */
  if (size != 0)
    {
      MPFR_ASSERTN (buf != NULL);
      min_size = (size_t)ret < size ? (size_t)ret : size - 1;
      strncpy (buf, str, min_size);
      buf[min_size] = '\0';
    }

  mpfr_free_str (str);
  return ret;
}

int
mpfr_asprintf (char **pp, const char *fmt, ...)
{
  int ret;

  GET_STR (ret, *pp, fmt);

  return ret;
}
#endif /* HAVE_STDARG */