1 files changed, 82 insertions, 0 deletions
diff --git a/lib/strtoimax.c b/lib/strtoimax.c
new file mode 100644
index 0000000..223412b
--- /dev/null
+++ b/lib/strtoimax.c
@@ -0,0 +1,82 @@
+/* Convert string representation of a number into an intmax_t value.
+
+   Copyright (C) 1999, 2001-2004, 2006, 2009-2016 Free Software Foundation,
+   Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert. */
+
+#include <config.h>
+
+/* Verify interface.  */
+#include <inttypes.h>
+
+#include <stdlib.h>
+
+#include "verify.h"
+
+#ifdef UNSIGNED
+# if HAVE_UNSIGNED_LONG_LONG_INT
+#  ifndef HAVE_DECL_STRTOULL
+"this configure-time declaration test was not run"
+#  endif
+#  if !HAVE_DECL_STRTOULL
+unsigned long long int strtoull (char const *, char **, int);
+#  endif
+# endif
+
+#else
+
+# if HAVE_LONG_LONG_INT
+#  ifndef HAVE_DECL_STRTOLL
+"this configure-time declaration test was not run"
+#  endif
+#  if !HAVE_DECL_STRTOLL
+long long int strtoll (char const *, char **, int);
+#  endif
+# endif
+#endif
+
+#ifdef UNSIGNED
+# define Have_long_long HAVE_UNSIGNED_LONG_LONG_INT
+# define Int uintmax_t
+# define Strtoimax strtoumax
+# define Strtol strtoul
+# define Strtoll strtoull
+# define Unsigned unsigned
+#else
+# define Have_long_long HAVE_LONG_LONG_INT
+# define Int intmax_t
+# define Strtoimax strtoimax
+# define Strtol strtol
+# define Strtoll strtoll
+# define Unsigned
+#endif
+
+Int
+Strtoimax (char const *ptr, char **endptr, int base)
+{
+#if Have_long_long
+  verify (sizeof (Int) == sizeof (Unsigned long int)
+          || sizeof (Int) == sizeof (Unsigned long long int));
+
+  if (sizeof (Int) != sizeof (Unsigned long int))
+    return Strtoll (ptr, endptr, base);
+#else
+  verify (sizeof (Int) == sizeof (Unsigned long int));
+#endif
+
+  return Strtol (ptr, endptr, base);
+}