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Function std.math.operations.fdim
Returns the positive difference between x and y.
real fdim
(
real x,
real y
) pure nothrow @nogc @safe;
Equivalent to fmax(x-y, 0)
.
Returns
x, y | fdim(x, y) |
---|---|
x > y | x - y |
x <= y | +0.0 |
Example
import std .math .traits : isNaN;
writeln(fdim(2.0, 0.0)); // 2.0
writeln(fdim(-2.0, 0.0)); // 0.0
writeln(fdim(real .infinity, 2.0)); // real.infinity
assert(isNaN(fdim(real .nan, 2.0)));
assert(isNaN(fdim(2.0, real .nan)));
assert(isNaN(fdim(real .nan, real .nan)));
Authors
Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw and David Nadlinger
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.