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Function std.math.traits.isSubnormal
Determines if x is subnormal.
bool isSubnormal(X)
(
X x
) pure nothrow @nogc @trusted;
Subnormals (also known as "denormal number"), have a 0 exponent and a 0 most significant mantissa bit.
Parameters
Name | Description |
---|---|
x | a floating point number. |
Returns
true
if x is a denormal number.
Example
import std .meta : AliasSeq;
static foreach (T; AliasSeq!(float, double, real))
{{
T f;
for (f = 1.0; !isSubnormal(f); f /= 2)
assert(f != 0);
}}
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.