Imported gcc-4.4.3

[msp430-gcc.git] / gmp / scanf / sscanffuns.c

diff --git a/gmp/scanf/sscanffuns.c b/gmp/scanf/sscanffuns.c
new file mode 100644 (file)
index 0000000..008bad7
--- /dev/null
+++ b/gmp/scanf/sscanffuns.c
@@ -0,0 +1,113 @@
+/* __gmp_sscanf_funs -- support for formatted input from a string.
+
+   THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY.  THEY'RE ALMOST
+   CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
+   FUTURE GNU MP RELEASES.
+
+Copyright 2001, 2002, 2003, 2009 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+
+
+#if 0
+static int
+scan (const char **sp, const char *fmt, ...)
+{
+    va_list ap;
+    int ret;
+
+    va_start(ap, fmt);
+    ret = vsscanf(*sp, fmt, ap);
+    va_end(ap);
+
+    return ret;
+}
+#else
+static int
+scan (const char **sp, const char *fmt, ...)
+{
+  va_list ap;
+  void *p1, *p2;
+  int ret;
+
+  va_start (ap, fmt);
+  p1 = va_arg (ap, void *);
+  p2 = va_arg (ap, void *);
+
+  ret = sscanf (*sp, fmt, p1, p2);
+
+  va_end (ap);
+
+  return ret;
+}
+#endif
+
+static void
+step (const char **sp, int n)
+{
+  ASSERT (n >= 0);
+
+  /* shouldn't push us past the end of the string */
+#if WANT_ASSERT
+  {
+    int  i;
+    for (i = 0; i < n; i++)
+      ASSERT ((*sp)[i] != '\0');
+  }
+#endif
+
+  (*sp) += n;
+}
+
+static int
+get (const char **sp)
+{
+  const char  *s;
+  int  c;
+  s = *sp;
+  c = (unsigned char) *s++;
+  if (c == '\0')
+    return EOF;
+  *sp = s;
+  return c;
+}
+
+static void
+unget (int c, const char **sp)
+{
+  const char  *s;
+  s = *sp;
+  if (c == EOF)
+    {
+      ASSERT (*s == '\0');
+      return;
+    }
+  s--;
+  ASSERT ((unsigned char) *s == c);
+  *sp = s;
+}
+
+const struct gmp_doscan_funs_t  __gmp_sscanf_funs = {
+  (gmp_doscan_scan_t)  scan,
+  (gmp_doscan_step_t)  step,
+  (gmp_doscan_get_t)   get,
+  (gmp_doscan_unget_t) unget,
+};