table of contents
- jessie 3.74-1
- jessie-backports 4.10-2~bpo8+1
- stretch 4.10-2
- testing 4.16-1
- stretch-backports 4.16-1~bpo9+1
- unstable 4.16-1
|CLOG(3)||Linux Programmer's Manual||CLOG(3)|
NAME¶clog, clogf, clogl - natural logarithm of a complex number
SYNOPSIS¶#include <complex.h> double complex clog(double complex z);
DESCRIPTION¶The logarithm clog() is the inverse function of the exponential cexp(3). Thus, if y = clog(z), then z = cexp(y). The imaginary part of y is chosen in the interval [-pi,pi]. One has:
clog(z) = log(cabs(z)) + I * carg(z)Note that z close to zero will cause an overflow.
VERSIONS¶These functions first appeared in glibc in version 2.1.
SEE ALSO¶cabs(3), cexp(3), clog10(3), clog2(3), complex(7)
COLOPHON¶This page is part of release 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.