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NAME | SYNOPSIS | DESCRIPTION | VERSIONS | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON |
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CABS(3) Linux Programmer's Manual CABS(3)
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).
┌─────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├─────────────────────────┼───────────────┼─────────┤
│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)).
abs(3), cimag(3), hypot(3), complex(7)
This page is part of release 5.08 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)
Pages that refer to this page: abs(3), cacosh(3), cacoshf(3), cacoshl(3), carg(3), cargf(3), cargl(3), casinh(3), casinhf(3), casinhl(3), catanh(3), catanhf(3), catanhl(3), ccos(3), ccosf(3), ccosh(3), ccoshf(3), ccoshl(3), ccosl(3), cexp2(3), cexp2f(3), cexp2l(3), cexp(3), cexpf(3), cexpl(3), cimag(3), cimagf(3), cimagl(3), clog10(3), clog10f(3), clog10l(3), clog2(3), clog2f(3), clog2l(3), clog(3), clogf(3), clogl(3), conj(3), conjf(3), conjl(3), cpow(3), cpowf(3), cpowl(3), cproj(3), cprojf(3), cprojl(3), creal(3), crealf(3), creall(3), csin(3), csinf(3), csinh(3), csinhf(3), csinhl(3), csinl(3), csqrt(3), csqrtf(3), csqrtl(3), ctan(3), ctanf(3), ctanh(3), ctanhf(3), ctanhl(3), ctanl(3), fabs(3), fabsf(3), fabsl(3), hypot(3), hypotf(3), hypotl(3), imaxabs(3), labs(3), llabs(3), complex(7)
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