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.

The cabs() function returns the absolute value of the complex number z. The result is a real number.

C99

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

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

This page is part of release 2.73 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

2002-07-28

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