# GenCosWin

Advanced Analysis Library Only

AnalysisLibErrType GenCosWin (double XArray[], int numberXElements, double A_Array[], int numberAElements);

## Purpose

Applies a general cosine window to the input signal. If Y represents the output sequence, GenCosWin obtains the elements of Y using the following formula:

where | a is the array of coefficients
| na is the number of coefficients
| n is the number of elements in XArray

## Parameters

Input
Name | Type | Description
numberXElements | integer | Number of elements in the input array, XArray.
A_Array | double-precision array | Coefficients used in the General Cosine Window.
numberAElements | integer | Number of elements in A_Array.
Output
Name | Type | Description
XArray | double-precision array | On input, the input signal. On output, the signal after GenCosWin applies the general cosine window.

## Return Value

Name | Type | Description
status | AnalysisLibErrType | A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants.