function fresnel( x ) {
	return computeFresnel( x, [ 0.0, 0.0 ], 1, 0 );
}
Computes the Fresnel integrals S(x) and C(x).

@param {number} x - input value
@returns {Array<number>} S(x) and C(x)

@example
var v = fresnel( 0.0 );
// returns [ 0.0, 0.0 ]

@example
var v = fresnel( 1.0 );
// returns [ ~0.438, ~0.780 ]

@example
var v = fresnel( Infinity );
// returns [ ~0.5, ~0.5 ]

@example
var v = fresnel( -Infinity );
// returns [ ~-0.5, ~-0.5 ]

@example
var v = fresnel( NaN );
// returns [ NaN, NaN ]