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CLOG(P)			   POSIX Programmer's Manual		       CLOG(P)

NAME
       clog, clogf, clogl - complex natural logarithm functions

SYNOPSIS
       #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 shall compute the complex natural (base e) logarithm of
       z, with a branch cut along the negative real axis.

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

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       cexp() , the Base Definitions  volume  of  IEEE Std 1003.1-2001,	 <com‐
       plex.h>

COPYRIGHT
       Portions	 of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating	System	Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003	by  the	 Institute  of
       Electrical  and	Electronics  Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained	online
       at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group		     2003			       CLOG(P)
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