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

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   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)

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