The OpenD Programming Language

cos

Returns cosine of x. x is in radians.

Special Values
x	cos(x)	invalid?
NaN	NaN	yes
±∞	NaN	yes

real cos(real x)
pragma(inline, true) @safe pure nothrow @nogc
real
cos
(
real x
)
double cos(double x)
float cos(float x)

Bugs

Results are undefined if |x| >= 2⁶⁴.

Examples

import std.math.operations : isClose;

assert(cos(0.0) == 1.0);
assert(cos(1.0).isClose(0.5403023059));
assert(cos(3.0).isClose(-0.9899924966));

Meta

Source

See Implementation

std math trigonometry functions