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

NAME

catan, catanf, catanl - complex arc tangent functions

SYNOPSIS

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);

DESCRIPTION

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

RETURN VALUES

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.

ERRORS

No errors are defined.

ATTRIBUTES

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


+----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+----------------------------+-----------------------------+
|Interface Stability | Standard |
+----------------------------+-----------------------------+
|MT-Level | MT-Safe |
+----------------------------+-----------------------------+

SEE ALSO

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

SunOS 5.11 July 12, 2006 CATAN(3M)