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Function `std.algorithm.comparison.clamp`

Clamps a value into the given bounds.



auto clamp(T1, T2, T3)
(


  T1 val,


  T2 lower,


  T3 upper


)


if (is(typeof(max(min(val, upper), lower))));

This function is equivalent to max(lower, min(upper, val)).

Parameters

Name	Description
val	The value to clamp.
lower	The lower bound of the clamp.
upper	The upper bound of the clamp.

Returns

Returns val, if it is between lower and upper. Otherwise returns the nearest of the two.

Example

writeln(clamp(2, 1, 3)); // 2
writeln(clamp(0, 1, 3)); // 1
writeln(clamp(4, 1, 3)); // 3

writeln(clamp(1, 1, 1)); // 1

writeln(clamp(5, -1, 2u)); // 2

Authors

Andrei Alexandrescu

License

Boost License 1.0.