# 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.