function covercosf( x ) {
	return f32( f32( 1.0 ) + sinf( f32( x ) ) );
}
Computes the coversed cosine of a single-precision floating-point number (in radians).

@param {number} x - input value (in radians)
@returns {number} coversed cosine

@example
var v = covercosf( 0.0 );
// returns 1.0

@example
var v = covercosf( 3.141592653589793/2.0 );
// returns 2.0

@example
var v = covercosf( -3.141592653589793/6.0 );
// returns 0.5

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