catan
, catanf
—complex arc tangent#include <complex.h> double complex catan(double complex z); float complex catanf(float complex z);
Description
These functions compute the complex arc tangent of z,
with branch cuts outside the interval [-i, +i] along the
imaginary axis.
catanf
is identical to catan
, except that it performs
its calculations on floats complex
.
Returns
These functions return the complex arc tangent value, in the range
of a strip mathematically unbounded along the imaginary axis
and in the interval [-pi/2, +pi/2] along the real axis.
Portability
catan
and catanf
are ISO C99