CLOG(3) complex math routines CLOG(3)

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

SYNOPSIS #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.

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 [-pi,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), complex(7)

2002-07-28 CLOG(3)