SIMPLE SOLUTIONS

CABS(3) - Linux man page online | Library functions

Absolute value of a complex number.

Chapter
2015-04-19
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)
This manual Reference Other manuals
cabs(3) referred by abs(3) | cacosh(3) | carg(3) | casinh(3) | catanh(3) | ccos(3) | ccosh(3) | cexp(3) | cexp2(3) | cimag(3) | clog(3) | clog10(3) | clog2(3) | complex(7) | conj(3) | cpow(3) | cproj(3) | creal(3) | csin(3) | csinh(3)
refer to abs(3) | attributes(7) | cimag(3) | complex(7) | hypot(3)
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