function createBenchmark1( shape ) {
	var x = array( filled2dBy( shape, rand ), OPTS );
	return benchmark;

	/**
	* Benchmark function.
	*
	* @private
	* @param {Benchmark} b - benchmark instance
	*/
	function benchmark( b ) {
		var y;
		var i;

		b.tic();
		for ( i = 0; i < b.iterations; i++ ) {
			y = abs( x );
			if ( typeof y !== 'object' ) {
				b.fail( 'should return an object' );
			}
		}
		b.toc();
		if ( isnan( y.get( 0, 0 ) ) || isnan( y.get( shape[0]-1, shape[1]-1 ) ) ) {
			b.fail( 'should not return NaN' );
		}
		b.pass( 'benchmark finished' );
		b.end();
	}
}
Creates a benchmark function.

@private
@param {PositiveIntegerArray} shape - array shape
@returns {Function} benchmark function