NAME¶

cabs, cabsf, cabsl - 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).

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)