Man Pages

cacos(3) - phpMan cacos(3) - phpMan

Command: man perldoc info search(apropos)  


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



NAME
       cacos, cacosf, cacosl - complex arc cosine

SYNOPSIS
       #include <complex.h>

       double complex cacos(double complex z);
       float complex cacosf(float complex z);
       long double complex cacosl(long double complex z);

       Link with -lm.

DESCRIPTION
       The cacos() function calculates the complex arc cosine of z.  If y = cacos(z), then z = ccos(y).  The real part
       of y is chosen in the interval [0,pi].

       One has:

           cacos(z) = -i clog(z + csqrt(z * z - 1))

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 3.22 of the Linux man-pages project.  A description of the project,  and  informa-
       tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



                                  2008-08-11                          CACOS(3)