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CATAN(3)                   Linux Programmer's Manual                  CATAN(3)

NAME
       catan, catanf, catanl - complex arc tangents

SYNOPSIS
       #include <complex.h>

       double complex catan(double complex z);
       float complex catanf(float complex z);
       long double complex catanl(long double complex z);

       Link with -lm.

DESCRIPTION
       The  catan()  function  calculates  the  complex  arc tangent of z.  If
       y = catan(z), then z = ctan(y).  The real part of y is  chosen  in  the
       interval [-pi/2,pi/2].

       One has:

           catan(z) = 1 / 2i clog((1 + iz) / (1 - iz))

VERSIONS
       These functions first appeared in glibc in version 2.1.

CONFORMING TO
       C99.

SEE ALSO
       ccos(3), clog(3), complex(7)

COLOPHON
       This  page  is  part of release 3.25 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

                                  2008-08-11                          CATAN(3)
 

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Gedruckt am: 15.12.2017 07:26 GMT+0100 (2017-12-15T07:26:12+01:00)