clamp

clamp - Restrict a number to a given range

float clamp( float $x, float $minValue, float $maxValue )

clamp() returns minValue if x is smaller than minValue or maxValue if x is greater than maxValue. Otherwise it returns x.

Parameters:

x - The number to process. It can be a scalar or an array.

minValue - The minimum value. It can be a scalar or an array.

maxValue - The maximum value. It can be a scalar or an array.

Return Value:

A number between minValue and maxValue or NAN. If x, minValue, or y is an array, then return value is also an array, the size of which match the largest of the three.

Version

1.0 and above.