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Function std.complex.tan
Trigonometric functions on complex numbers.
Parameters
Name | Description |
---|---|
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
Copyright © 1999-2025 by the D Language Foundation | Page generated by ddox.