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-rw-r--r--src/prng/rand.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/prng/rand.c b/src/prng/rand.c
new file mode 100644
index 00000000..e3ce6347
--- /dev/null
+++ b/src/prng/rand.c
@@ -0,0 +1,13 @@
+#include <stdlib.h>
+
+static unsigned seed;
+
+void srand(unsigned s)
+{
+ seed = s-1;
+}
+
+int rand(void)
+{
+ return (seed = (seed+1) * 1103515245 + 12345 - 1)+1 & 0x7fffffff;
+}