sumalibs first commit

libutils/debug.c

@@ -0,0 +1,32 @@
+/*
+ * debug.c
+ *
+ *  Created on: 4 sept. 2012
+ *      Author: coissac
+ */
+
+#include <stdlib.h>
+#include <inttypes.h>
+#include "debug.h"
+
+char* int2bin(int64_t i,size_t bits)
+{
+    static char str[65];
+    uint64_t u;
+
+    if (bits > 64)
+    	return NULL;
+
+    str[bits] = 0;
+
+    // type punning because signed shift is implementation-defined
+    u = *(unsigned *)&i;
+
+    for(; bits--; u >>= 1)
+        str[bits] = u & 1 ? '1' : '0';
+
+    return str;
+}
+
+
+