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CLOG (3) | C library functions | Unix Manual Pages | :man

NAME

clog, clogf, clogl - natural logarithm of a complex number

CONTENTS

Synopsis
Description

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

The logarithm clog is the inverse function of the exponential cexp. Thus, if y = clog(z), then z = cexp(y). The imaginary part of y is chosen in the interval [-I*pi,I*pi].

One has clog(z) = log(cabs(z))+I*carg(z).

Please note that z close to zero will cause an overflow.

"CONFORMING TO"

C99

"SEE ALSO"

cabs(3), cexp(3), clog10(3


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