cabs - Man Page

absolute value of a complex number

Library

Math library (libm, -lm)

Synopsis

#include <complex.h>

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

Description

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

Versions

These functions were added in glibc 2.1.

Attributes

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue
cabs(), cabsf(), cabsl()Thread safetyMT-Safe

Standards

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)

Referenced 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), csqrt(3), ctan(3), ctanh(3), fabs(3), hypot(3).

The man pages cabsf(3) and cabsl(3) are aliases of cabs(3).

2022-12-15 Linux man-pages 6.02