Elementary.Cos
Returns the cosine of an angle, minus 1, accurately for angles
close to a multiple of π.
Definition
Namespace: Numerics.NET
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.0
C#
The exponential function minus 1.
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.0
public static double CosM1(
double x
)Parameters
- x Double
- A real number.
Return Value
DoubleThe exponential function minus 1.
Remarks
When x is close to zero, the cosine is close to one. Subtracting one from this result can cause significant round-off error. This function resolves this problem by using an expression in terms of different functions for such arguments.