cabs

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

NAME
       cabs, cabsf, cabsl - absolute value of a complex number

SYNOPSIS
       #include <complex.h>

       double cabs(double complex z);
       float cabsf(float complex z);
       long double cabsl(long double complex z);

       Link with -lm.

DESCRIPTION
       These functions return the absolute value of the complex number z.  The
       result is a real number.

VERSIONS
       These functions first appeared in glibc in version 2.1.

ATTRIBUTES
       For an  explanation  of  the  terms  used  in  this  section,  see  at-
       tributes(7).

       +-------------------------+---------------+---------+
       |Interface                | Attribute     | Value   |
       +-------------------------+---------------+---------+
       |cabs(), cabsf(), cabsl() | Thread safety | MT-Safe |
       +-------------------------+---------------+---------+
CONFORMING TO
       C99, POSIX.1-2001, POSIX.1-2008.

NOTES
       The  function  is  actually an alias for hypot(a, b) (or, equivalently,
       sqrt(a*a + b*b)).

SEE ALSO
       abs(3), cimag(3), hypot(3), complex(7)

COLOPHON
       This page is part of release 5.05 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.

                                  2015-04-19                           CABS(3)