1 files changed, 40 insertions, 0 deletions
diff --git a/random_unsigned.c b/random_unsigned.c
new file mode 100644
index 0000000..f39392d
--- /dev/null
+++ b/random_unsigned.c
@@ -0,0 +1,40 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+uintmax_t
+libsimple_random_unsigned(uintmax_t (*rng)(size_t bits, void *user), void *user, uintmax_t min, uintmax_t max) /* TODO add test */
+{
+	uintmax_t range, offset, t, r;
+	size_t bits = 0;
+
+	if (min < max) {
+		range = max - min;
+		offset = min;
+	} else {
+		range = min - max;
+		offset = max;
+	}
+
+	for (t = range; t; t >>= 1)
+		bits += 1;
+
+	do {
+		r = (*rng)(bits, user);
+	} while (r > range);
+
+	return r + offset;
+}
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	return 0;
+}
+
+#endif