View source code Display the source code in std/math.d from which this page was generated on github. Improve this page Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone. Page wiki View or edit the community-maintained wiki page associated with this page.

Function std.math.sgn

Returns -1 if x < 0, x if x == 0, 1 if x > 0, and if x==.

Prototype

F sgn(F)(
  F x
) pure nothrow @nogc @safe;

Example

assert(sgn(168.1234) == 1);
assert(sgn(-168.1234) == -1);
assert(sgn(0.0) == 0);
assert(sgn(-0.0) == 0);

Authors

Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw

License

Boost License 1.0.

Comments