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Function std.math.traits.signbit
Return 1 if sign bit of e is set, 0 if not.
int signbit(X)
(
X x
) pure nothrow @nogc @trusted;
Example
assert(!signbit(float .nan));
assert(signbit(-float .nan));
assert(!signbit(168.1234f));
assert(signbit(-168.1234f));
assert(!signbit(0.0f));
assert(signbit(-0.0f));
assert(signbit(-float .max));
assert(!signbit(float .max));
assert(!signbit(double .nan));
assert(signbit(-double .nan));
assert(!signbit(168.1234));
assert(signbit(-168.1234));
assert(!signbit(0.0));
assert(signbit(-0.0));
assert(signbit(-double .max));
assert(!signbit(double .max));
assert(!signbit(real .nan));
assert(signbit(-real .nan));
assert(!signbit(168.1234L));
assert(signbit(-168.1234L));
assert(!signbit(0.0L));
assert(signbit(-0.0L));
assert(signbit(-real .max));
assert(!signbit(real .max));
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.