CATAN(3M) Mathematical Library Functions CATAN(3M)

catan, catanf, catanl - complex arc tangent functions

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

float complex catanf(float complex z);

long double complex catanl(long double complex z);

These functions compute the complex arc tangent of z, with branch cuts outside the interval [ −i, +++++pipii ] along the imaginary axis.

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.

No errors are defined.

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

Interface Stability Standard
MT-Level MT-Safe

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

July 12, 2006 SunOS 5.11