cabs, cabsf, cabsl - absolute value of a complex number
#include <complex.h> double cabs(double complex z); float cabsf(float complex z); long double cabsl(long double complex z); Link with -lm.
These functions return the absolute value of the complex number
z. The result is a real number.
These functions first appeared in glibc in version 2.1.
For an explanation of the terms used in this section, see attributes(7).
|cabs(), cabsf(), cabsl()||Thread safety||MT-Safe|
C99, POSIX.1-2001, POSIX.1-2008.
The function is actually an alias for
hypot(a, b) (or, equivalently,
sqrt(a*a + b*b)).
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/.