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Function std.math.trigonometry.tan
Returns tangent of x. x is in radians.
real tan
(
real x
) pure nothrow @nogc @safe;
double tan
(
double x
) pure nothrow @nogc @safe;
float tan
(
float x
) pure nothrow @nogc @safe;
x | tan(x) | invalid? |
---|---|---|
NAN | NAN | yes |
±0.0 | ±0.0 | no |
±∞ | NAN | yes |
Example
import std .math .operations : isClose;
import std .math .traits : isIdentical;
import std .math .constants : PI;
import std .math .algebraic : sqrt;
assert(isIdentical(tan(0.0), 0.0));
assert(tan(PI) .isClose(0, 0.0, 1e-10));
assert(tan(PI / 3) .isClose(sqrt(3.0)));
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.