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Function std.math.traits.isInfinity
Determines if x is ±∞.
bool isInfinity(X)
(
X x
) pure nothrow @nogc @trusted
if (isFloatingPoint!X);
Parameters
Name | Description |
---|---|
x | a floating point number. |
Returns
true
if x is ±∞.
Example
assert(!isInfinity(float .init));
assert(!isInfinity(-float .init));
assert(!isInfinity(float .nan));
assert(!isInfinity(-float .nan));
assert(isInfinity(float .infinity));
assert(isInfinity(-float .infinity));
assert(isInfinity(-1.0f / 0.0f));
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.