## Linux and UNIX Man Pages

Test Your Knowledge in Computers #870
Difficulty: Medium
Lisp introduced the concept of automatic garbage collection.
True or False?

# clogl(3m) [opensolaris man page]

```clog(3M)						  Mathematical Library Functions						  clog(3M)

NAME
clog, clogf, clogl - complex natural logarithm functions

SYNOPSIS
c99 [ flag... ] file... -lm [ library... ]
#include <complex.h>

double complex clog(double complex z);

float complex clogf(float complex z);

long double complex clogl(long double complex z);

DESCRIPTION
These functions compute the complex natural (base e) logarithm of z, with a branch cut along the negative real axis.

RETURN VALUES
These functions return the complex natural logarithm value, in the range of a strip mathematically unbounded along the real axis and in the
interval [ -i , +i ] along the imaginary axis.

ERRORS
No errors are defined.

ATTRIBUTES
See attributes(5) for descriptions of the following attributes:

+-----------------------------+-----------------------------+
|      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
+-----------------------------+-----------------------------+
|Interface Stability	     |Standard			   |
+-----------------------------+-----------------------------+
|MT-Level		     |MT-Safe			   |
+-----------------------------+-----------------------------+

SunOS 5.11							    12 Jul 2006 							  clog(3M)```

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```clog(3M)						  Mathematical Library Functions						  clog(3M)

NAME
clog, clogf, clogl - complex natural logarithm functions

SYNOPSIS
c99 [ flag... ] file... -lm [ library... ]
#include <complex.h>

double complex clog(double complex z);

float complex clogf(float complex z);

long double complex clogl(long double complex z);

DESCRIPTION
These functions compute the complex natural (base e) logarithm of z, with a branch cut along the negative real axis.

RETURN VALUES
These functions return the complex natural logarithm value, in the range of a strip mathematically unbounded along the real axis and in the
interval [ -i , +i ] along the imaginary axis.

ERRORS
No errors are defined.

ATTRIBUTES
See attributes(5) for descriptions of the following attributes:

+-----------------------------+-----------------------------+
|      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
+-----------------------------+-----------------------------+
|Interface Stability	     |Standard			   |
+-----------------------------+-----------------------------+
|MT-Level		     |MT-Safe			   |
+-----------------------------+-----------------------------+