79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
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/* __gmp_fprintf_funs -- support for formatted output to FILEs.
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THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY. THEY'RE ALMOST
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CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
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FUTURE GNU MP RELEASES.
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Copyright 2001 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "config.h"
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#if HAVE_STDARG
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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/* SunOS 4 stdio.h doesn't provide a prototype for this */
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#if ! HAVE_DECL_VFPRINTF
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int vfprintf _PROTO ((FILE *fp, const char *fmt, va_list ap));
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#endif
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static int
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gmp_fprintf_memory (FILE *fp, const char *str, size_t len)
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{
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return fwrite (str, 1, len, fp);
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}
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/* glibc putc is a function, at least when it's in multi-threaded mode or
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some such, so fwrite chunks instead of making many calls. */
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static int
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gmp_fprintf_reps (FILE *fp, int c, int reps)
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{
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char buf[256];
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int i, piece, ret;
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ASSERT (reps >= 0);
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memset (buf, c, MIN (reps, sizeof (buf)));
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for (i = reps; i > 0; i -= sizeof (buf))
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{
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piece = MIN (i, sizeof (buf));
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ret = fwrite (buf, 1, piece, fp);
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if (ret == -1)
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return ret;
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ASSERT (ret == piece);
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}
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return reps;
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}
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const struct doprnt_funs_t __gmp_fprintf_funs = {
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(doprnt_format_t) vfprintf,
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(doprnt_memory_t) gmp_fprintf_memory,
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(doprnt_reps_t) gmp_fprintf_reps,
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};
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