GammaC

Advanced Analysis Library Only

double GammaC (double x, double a);

Purpose

Computes the complementary incomplete gamma function, which is defined as follows:

The following equation relates the complement of the incomplete gamma function to the incomplete gamma function:

Parameters

Input
Name Type Description
x double-precision The point at which the function is evaluated.
a double-precision The upper limit of the incomplete gamma function.

Return Value

Name Type Description
result double-precision The value of the evaluated complementary incomplete gamma function.