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CLOG(3)                    Library Functions Manual                    CLOG(3)

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 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 pi, +i pi] along the imaginary axis.

ERRORS
     No errors are defined.

SEE ALSO
     cexp(3), IEEE Std 1003.1-2001 (``POSIX.1'') <complex.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 .

NetBSD 7.1.2                   January 29, 2013                   NetBSD 7.1.2