Added SMSD non-interactive command line client for Shack-Hartmann control system

websockets/testlog2.c

@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <stdint.h>
+
+static inline uint32_t log_2(const uint32_t x){
+    if(x == 0) return 0;
+    return (31 - __builtin_clz (x));
+}
+
+int main(){
+    uint32_t i;
+    for(i = 0; i < 150; i++){
+	printf("log2(%u) = %u\n", i, log_2(i));
+    }
+    return 0;
+}