# CosIntegral

Advanced Analysis Library Only

double CosIntegral (double x);

## Purpose

Computes the cosine integral, which is defined as follows:

## Parameters

Input
Name | Type | Description
x | double-precision | The input argument of the cosine integral function. Refer to the definition formula for the cosine integral formula for more information about x.

## Return Value

Name | Type | Description
result | double-precision | The value of the cosine integral.