function absf( x ) {
	FLOAT32_VIEW[ 0 ] = x;
	UINT32_VIEW[ 0 ] &= ABS_MASK;
	return FLOAT32_VIEW[ 0 ];
}
Computes the absolute value of a single-precision floating-point number `x`.

@param {number} x - input value
@returns {number} absolute value

@example
var v = absf( -1.0 );
// returns 1.0

@example
var v = absf( 2.0 );
// returns 2.0

@example
var v = absf( 0.0 );
// returns 0.0

@example
var v = absf( -0.0 );
// returns 0.0

@example
var v = absf( NaN );
// returns NaN