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CATAN(3)                   Library Functions Manual                   CATAN(3)

NAME
     catan, catanf, catanl - complex arc tangent functions

SYNOPSIS
     #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, +i] 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.

SEE ALSO
     ctan(3), IEEE Std 1003.1-2001 ("POSIX.1") <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) 2001-2003 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 .

NetBSD 10.99                   January 29, 2013                   NetBSD 10.99