Linux manual pages Section 3: Subroutines  

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);
 
[Note] Note

Link with −lm.

DESCRIPTION

The cabs() function returns 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.

CONFORMING TO

C99.

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 3.52 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/.


  Copyright 2002 Walter Harms (walter.harmsinformatik.uni-oldenburg.de)

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