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Function std.math.sgn
Returns -1 if x < 0, x if x == 0, 1 if
x > 0, and NAN if x==NAN.
F sgn(F)
(
F x
) pure nothrow @nogc @safe;
Example
writeln(sgn(168.1234)); // 1
writeln(sgn(-168.1234)); // -1
writeln(sgn(0.0)); // 0
writeln(sgn(-0.0)); // 0
Authors
Walter Bright, Don Clugston, Conversion of CEPHES math library to D by Iain Buclaw and David Nadlinger
License
Copyright © 1999-2018 by the D Language Foundation | Page generated by ddox.