aboutsummaryrefslogtreecommitdiffstats
path: root/random_bits.c
diff options
context:
space:
mode:
authorMattias Andrée <maandree@kth.se>2024-01-29 07:32:29 +0100
committerMattias Andrée <maandree@kth.se>2024-01-29 17:38:32 +0100
commitcb4b8137902b7c89872f8face7b47704f932b807 (patch)
treeaff0ef17c94de69cb818b4635338b792cdae534a /random_bits.c
parentAdd libsimple_generate_seed and libsimple_srand (diff)
downloadlibsimple-cb4b8137902b7c89872f8face7b47704f932b807.tar.gz
libsimple-cb4b8137902b7c89872f8face7b47704f932b807.tar.bz2
libsimple-cb4b8137902b7c89872f8face7b47704f932b807.tar.xz
Add to*, *diff, *abs, *uabs, and random_{bits,float,signed,unsigned}
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'random_bits.c')
-rw-r--r--random_bits.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/random_bits.c b/random_bits.c
new file mode 100644
index 0000000..528b09e
--- /dev/null
+++ b/random_bits.c
@@ -0,0 +1,34 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+uintmax_t
+libsimple_random_bits(size_t bits, void *unused)
+{
+ uintmax_t ret = 0;
+
+ while (bits >= 8) {
+ ret <<= 8;
+ ret |= (uintmax_t)(rand() & 0xFF);
+ bits -= 8;
+ }
+
+ ret <<= bits;
+ ret |= (uintmax_t)(rand() & ((1 << bits) - 1));
+
+ (void) unused;
+ return ret;
+}
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+ return 0;
+}
+
+#endif