Returns a complex absolute value.
#include <complex.h> double cabs (z) double complex z; float cabsf (z) float complex z; long double cabsl (z) long double complex z;
The cabs, cabsf, or cabsl subroutines compute the complex absolute value (also called norm, modulus, or magnitude) of the z parameter.
| z | Specifies the value to be computed. |
Returns the complex absolute value.