cabs(3) — Linux manual page

CABS(3)                 Linux Programmer's Manual                CABS(3)

NAME         top

       cabs, cabsf, cabsl - absolute value of a complex number

SYNOPSIS         top

       #include <complex.h>

       double cabs(double complex z);
       float cabsf(float complex z);
       long double cabsl(long double complex z);

       Link with -lm.

DESCRIPTION         top

       These functions return the absolute value of the complex number
       z.  The result is a real number.

VERSIONS         top

       These functions first appeared in glibc in version 2.1.

ATTRIBUTES         top

       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         top

       C99, POSIX.1-2001, POSIX.1-2008.

NOTES         top

       The function is actually an alias for hypot(a, b) (or,
       equivalently, sqrt(a*a + b*b)).

SEE ALSO         top

       abs(3), cimag(3), hypot(3), complex(7)

COLOPHON         top

       This page is part of release 5.13 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/.

                               2021-03-22                        CABS(3)

Pages that refer to this page: abs(3),  cacosh(3),  carg(3),  casinh(3),  catanh(3),  ccos(3),  ccosh(3),  cexp2(3),  cexp(3),  cimag(3),  clog10(3),  clog2(3),  clog(3),  conj(3),  cpow(3),  cproj(3),  creal(3),  csin(3),  csinh(3),  csqrt(3),  ctan(3),  ctanh(3),  fabs(3),  hypot(3),  complex(7)

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