docs: fix return type

PR-URL: #2700
Ref: f2f6164#r144735363
Ref: f2f6164#r144735366
Ref: f2f6164#r144735371
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: gunjjoshi

lib/node_modules/@stdlib/math/base/special/fresnel/benchmark/c/native/benchmark.c

@@ -101,13 +101,13 @@ static double benchmark( void ) {
 	for ( i = 0; i < ITERATIONS; i++ ) {
 		x = ( 20.0 * rand_double() ) - 10.0;
 		stdlib_base_fresnel( x, &S, &C );
-		if ( C != C || S != S) {
+		if ( C != C || S != S ) {
 			printf( "unexpected results\n" );
 			break;
 		}
 	}
 	elapsed = tic() - t;
-	if ( C != C || S != S) {
+	if ( C != C || S != S ) {
 		printf( "unexpected results\n" );
 	}
 	return elapsed;

lib/node_modules/@stdlib/math/base/special/fresnel/lib/native.js

@@ -31,7 +31,7 @@ var addon = require( './../src/addon.node' );
 *
 * @private
 * @param {number} x - input value
-* @returns {Array<number>} S(x) and C(x)
+* @returns {Float64Array} S(x) and C(x)
 *
 * @example
 * var v = fresnel( 0.0 );