# CxLn

Advanced Analysis Library Only

AnalysisLibErrType CxLn (double xReal, double xImg, double *outputReal, double *outputImg);

## Purpose

Calculates the natural logarithm of a complex number. CxLn obtains the resulting complex number using the following formula:

(outputReal, outputImg) = loge(xReal, xImg)

where e = 2.178 . . .

## Parameters

Input
Name | Type | Description
xReal | double-precision | Real part of the complex number whose natural logarithm is computed. Default Value: 1.0.
xImg | double-precision | Imaginary part of the complex number whose natural logarithm is computed. Default Value: 0.0.
Output
Name | Type | Description
outputReal | double-precision | Real part of the resulting natural logarithm.
outputImg | double-precision | Imaginary part of the resulting natural logarithm.

## 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.