function nanminf( x, y ) {
	if ( isnanf( x ) ) {
		return ( isnanf( y ) ) ? NaN : y;
	}
	return ( isnanf( y ) ) ? x : minf( x, y );
}
Return the minimum value of two single-precision floating-point numbers, ignoring NaN.

@param {number} x - first number
@param {number} y - second number
@returns {number} minimum value

@example
var v = nanminf( 3.14, 4.2 );
// returns 3.14

@example
var v = nanminf( 4.14, NaN );
// returns 4.14

@example
var v = nanminf( NaN, NaN );
// returns NaN