Update benchmark.c

Replaced rand_int from rand_double as mentioned across other files

Signed-off-by: Harsh Mathur <[email protected]>

lib/node_modules/@stdlib/math/base/special/lcmf/benchmark/c/benchmark.c

@@ -79,8 +79,9 @@ static double tic( void ) {
 *
 * @return random integer
 */
-static int rand_int( void ) {
-	return (rand() % 20) + 1; // Random value between 1 and 20 for small lcmf tests
+static double rand_double( void ) {
+	int r = rand();
+	return (double)r / ( (double)RAND_MAX + 1.0 );
 }
 
 /**