Query: clog
OS: centos
Section: 3
Links: centos man pages all man pages
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CLOG(3) Linux Programmer's Manual CLOG(3)NAMEclog, clogf, clogl - natural logarithm of a complex numberSYNOPSIS#include <complex.h> double complex clog(double complex z); float complex clogf(float complex z); long double complex clogl(long double complex z); Link with -lm.DESCRIPTIONThe 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.VERSIONSThese functions first appeared in glibc in version 2.1.CONFORMING TOC99.SEE ALSOcabs(3), cexp(3), clog10(3), clog2(3), complex(7)COLOPHONThis page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2008-08-11 CLOG(3)