Menu
Search

API Documentation

version 2.110.0

overview

View source code
Display the source code in std/complex.d from which thispage was generated on github.
Report a bug
If you spot a problem with this page, click here to create aBugzilla issue.
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 usinglocal clone.

Function std.complex.tan

Trigonometric functions on complex numbers.

Complex!T tan(T)(
  Complex!T z
) pure nothrow @nogc @safe;

Parameters

NameDescription
z A complex number.

Returns

The sine, cosine and tangent of z, respectively.

Example

static import core.math;
writeln(sin(complex(0.0))); // 0.0
writeln(sin(complex(2.0, 0))); // core.math.sin(2.0)

Example

static import core.math;
static import std.math;
writeln(cos(complex(0.0))); // 1.0
writeln(cos(complex(1.3, 0.0))); // core.math.cos(1.3)
writeln(cos(complex(0.0, 5.2))); // std.math.cosh(5.2)

Example

static import std.math;

int ceqrel(T)(const Complex!T x, const Complex!T y) @safe pure nothrow @nogc
{
    import std.math.operations : feqrel;
    const r = feqrel(x.re, y.re);
    const i = feqrel(x.im, y.im);
    return r < i ? r : i;
}
assert(ceqrel(tan(complex(1.0, 0.0)), complex(std.math.tan(1.0), 0.0)) >= double.mant_dig - 2);
assert(ceqrel(tan(complex(0.0, 1.0)), complex(0.0, std.math.tanh(1.0))) >= double.mant_dig - 2);

Authors

Lars Tandle Kyllingstad, Don Clugston

License

Boost License 1.0