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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
       attributes(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 4.15 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)