cabs - Absolute value of a complex number

Definition	#include <math.h> double cabs(_ _complex z); cabs calculates the absolute value of the complex number z with real part x and imaginary part y. __complex is a type predefined in the header <math.h>: #typdef struct{double x, y;} __complex
Return val.	sqrt(z.x * z.x + z.y * z.y) i.e. the absolute value of the complex number z. In the case of an overflow, the program aborts (signal SIGFPE)!
Example	The following program calculates the absolute value of a complex number. #include <stdio.h> #include <math.h> int main(void) { __complex z; if (scanf("%f %f", &z.x, &z.y) == 2) printf("%f : Absolute value\n", cabs(z)); return 0; }
See also	abs, fabs, labs, llabs, sqrt