CATAN(3P) POSIX Programmer's Manual CATAN(3P)
NAME
catan, catanf  complex arc tangent functions
SYNOPSIS
#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.
RETURN VALUE
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.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
ctan(), the Base Definitions volume of IEEE Std 1003.12001,
<complex.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
 Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 20012003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 CATAN(3P)
