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

       For an explanation of the terms used in this section, see attributes(7).
       ┌─────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                                                                   │ Attribute     │ Value   │
       ├─────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
       │ clog(), clogf(), clogl()                                                    │ Thread safety │ MT-Safe │
       └─────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘

       These  functions  calculate the complex natural logarithm of z, with a branch cut along the negative real
       axis.

       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.

       glibc 2.1.  C99, POSIX.1-2001.

       Math library (libm, -lm)

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

cabs(3), cexp(3), clog10(3), clog2(3), complex(7)

Linux man-pages 6.9.1                              2024-05-02                                            clog(3)

       C11, POSIX.1-2008.

#include<complex.h>doublecomplexclog(doublecomplexz);floatcomplexclogf(floatcomplexz);longdoublecomplexclogl(longdoublecomplexz);