bench: isolate operation

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/number/float16/base/exponent/benchmark/c/benchmark.c

@@ -93,21 +93,19 @@ static double rand_double( void ) {
 * @return elapsed time in seconds
 */
 static double benchmark( void ) {
-	stdlib_float16_t v;
-	double x[ 100 ];
+	stdlib_float16_t x[ 100 ];
 	double elapsed;
 	int16_t out;
 	double t;
 	int i;
 
 	for ( i = 0; i < 100; i++ ) {
-		x[ i ] = ( 1.0e7*rand_double() ) - 5.0e6;
+		x[ i ] = stdlib_base_float64_to_float16( ( 1.0e7*rand_double() ) - 5.0e6 );
 	}
 
 	t = tic();
 	for ( i = 0; i < ITERATIONS; i++ ) {
-		v = stdlib_base_float64_to_float16( x[ i % 100 ] );
-		out = stdlib_base_float16_exponent( v );
+		out = stdlib_base_float16_exponent( x[ i%100 ] );
 		if ( out == 16 ) {
 			printf( "unexpected result\n" );
 			break;