CABS
Section: Linux Programmer's Manual (3)
Updated: 2015-04-19
Page Index
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 5.10 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/.