Cotan v0.1.0
Returns the cotangent of an angle in radians.
Package: Math
Signature
func Cotan(x: float64) -> float64;
func Cotan(x: float32) -> float32;
Parameters
| Name | Type | Description |
|---|---|---|
x | float64 / float32 | An angle, in radians. |
Returns
The cotangent of x, computed directly rather than as 1 / Tan(x) so the
result near a pole keeps the bits a second rounding would lose. Cotan(0.0)
is +Inf and Cotan(-0.0) is -Inf, carrying the pole at zero with the
right sign. The cotangent has no limit at infinity, so Cotan(±Inf) is a
NaN; a NaN argument also propagates.
Example
import Math::{ Cotan, QuarterPi };
func Main() -> int {
let a = Cotan(QuarterPi); // 1.0
return 0;
}