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(5) 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(5), standards(5)
SunOS 5.11 12 Jul 2006 catan(3M)
