CLOG - Online Linux Manual PageSection : 3P
Updated : 2017
Source : IEEE/The Open Group
Note : POSIX Programmer's Manual

PROLOGThis manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAMEclog, 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);

DESCRIPTIONThe functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1‐2017 defers to the ISO C standard. These functions shall compute the complex natural (base e) logarithm of z, with a branch cut along the negative real axis.

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

ERRORSNo errors are defined. The following sections are informative.

EXAMPLESNone.

APPLICATION USAGENone.

RATIONALENone.

FUTURE DIRECTIONSNone.

SEE ALSOcexp() The Base Definitions volume of POSIX.1‐2017, <complex.h>

COPYRIGHTPortions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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 . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .
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