CLOG(3M) Mathematical Library Functions CLOG(3M)

clog, clogf, clogl - complex natural logarithm functions

c99 [ flag... ] file... -lm [ library... ]
#include <complex.h>
double complex clog(double complex z);

float complex clogf(float complex z);

long double complex clogl(long double complex z);

These functions compute the complex natural (base e) logarithm of z, with a branch cut along the negative real axis.

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 , +i ] along the imaginary axis.

No errors are defined.

See attributes(7) for descriptions of the following attributes:

Interface Stability Standard
MT-Level MT-Safe

complex.h(3HEAD), cexp(3M), attributes(7), standards(7)

July 12, 2006 SunOS 5.11