# Sub1D

AnalysisLibErrType Sub1D (double arrayX[], double arrayY[], int numberOfElements, double outputArray[]);

## Purpose

Subtracts two 1D arrays, element by element. Sub1D can obtain the element of the output array using the following formula:

zi = xi – yi

Sub1D can perform the operation in place; that is, the input and output arrays can be the same.

## Parameters

Input
Name | Type | Description
arrayX | double-precision array | The first array used in the array subtraction operation.
arrayY | double-precision array | The second array used in the array subtraction operation.
numberOfElements | integer | Number of elements to subtract.
Output
Name | Type | Description
outputArray | double-precision array | The result of the array subtraction.

## 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.