source/libs/gmp/gmp-src/printf/obprntffuns.c

   1 /* __gmp_obstack_printf_funs -- support for gmp_obstack_printf and
   2    gmp_obstack_vprintf.
   3
   4    THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY.  THEY'RE ALMOST
   5    CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
   6    FUTURE GNU MP RELEASES.
   7
   8 Copyright 2001 Free Software Foundation, Inc.
   9
  10 This file is part of the GNU MP Library.
  11
  12 The GNU MP Library is free software; you can redistribute it and/or modify
  13 it under the terms of either:
  14
  15   * the GNU Lesser General Public License as published by the Free
  16     Software Foundation; either version 3 of the License, or (at your
  17     option) any later version.
  18
  19 or
  20
  21   * the GNU General Public License as published by the Free Software
  22     Foundation; either version 2 of the License, or (at your option) any
  23     later version.
  24
  25 or both in parallel, as here.
  26
  27 The GNU MP Library is distributed in the hope that it will be useful, but
  28 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  29 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  30 for more details.
  31
  32 You should have received copies of the GNU General Public License and the
  33 GNU Lesser General Public License along with the GNU MP Library.  If not,
  34 see https://www.gnu.org/licenses/.  */
  35
  36 #include "config.h"
  37
  38 #if HAVE_OBSTACK_VPRINTF
  39
  40 #define _GNU_SOURCE   /* ask glibc <stdio.h> for obstack_vprintf */
  41
  42 #include <stdarg.h>
  43 #include <stdio.h>    /* for obstack_vprintf */
  44 #include <string.h>
  45 #include <obstack.h>
  46
  47 #include "gmp.h"
  48 #include "gmp-impl.h"
  49
  50
  51 static int
  52 gmp_obstack_memory (struct obstack *ob, const char *ptr, size_t len)
  53 {
  54   obstack_grow (ob, ptr, len);
  55   return len;
  56 }
  57
  58 static int
  59 gmp_obstack_reps (struct obstack *ob, int c, int reps)
  60 {
  61   obstack_blank (ob, reps);
  62   memset ((char *) obstack_next_free(ob) - reps, c, reps);
  63   return reps;
  64 }
  65
  66 const struct doprnt_funs_t  __gmp_obstack_printf_funs = {
  67   (doprnt_format_t) obstack_vprintf,
  68   (doprnt_memory_t) gmp_obstack_memory,
  69   (doprnt_reps_t)   gmp_obstack_reps
  70 };
  71
  72 #endif /* HAVE_OBSTACK_VPRINTF */