1 files changed, 51 insertions, 0 deletions
diff --git a/gl/lib/randint.h b/gl/lib/randint.h
new file mode 100644
index 000000000..1e96ccb50
--- /dev/null
+++ b/gl/lib/randint.h
@@ -0,0 +1,51 @@
+/* Generate random integers.
+
+   Copyright (C) 2006 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.  */
+
+#ifndef RANDINT_H
+
+# define RANDINT_H 1
+
+# include <stdint.h>
+
+# include "randread.h"
+
+/* An unsigned integer type, used for random integers, and its maximum
+   value.  */
+typedef uintmax_t randint;
+# define RANDINT_MAX UINTMAX_MAX
+
+struct randint_source;
+
+struct randint_source *randint_new (struct randread_source *);
+struct randint_source *randint_all_new (char const *, size_t);
+struct randread_source *randint_get_source (struct randint_source const *);
+randint randint_genmax (struct randint_source *, randint genmax);
+
+/* Consume random data from *S to generate a random number in the range
+   0 .. CHOICES-1.  CHOICES must be nonzero.  */
+static inline randint
+randint_choose (struct randint_source *s, randint choices)
+{
+  return randint_genmax (s, choices - 1);
+}
+
+void randint_free (struct randint_source *);
+int randint_all_free (struct randint_source *);
+
+#endif