function quantile( p, a, b ) {
	return addon( p, a, b );
}
Evaluates the quantile function for a uniform distribution with minimum support `a` and maximum support `b` at a probability `p`.

@private
@param {Probability} p - input value
@param {number} a - minimum support
@param {number} b - maximum support
@returns {number} evaluated quantile function

@example
var y = quantile( 0.8, 0.0, 1.0 );
// returns 0.8

@example
var y = quantile( 0.5, 0.0, 10.0 );
// returns 5.0

@example
var y = quantile( 1.1, 0.0, 1.0 );
// returns NaN

@example
var y = quantile( -0.2, 0.0, 1.0 );
// returns NaN

@example
var y = quantile( NaN, 0.0, 1.0 );
// returns NaN

@example
var y = quantile( 0.0, NaN, 1.0 );
// returns NaN

@example
var y = quantile( 0.0, 0.0, NaN );
// returns NaN

@example
var y = quantile( 0.5, 2.0, 1.0 );
// returns NaN