cabs() Mathematics Function cabs() Complex absolute value function #include <math.h> double cabs(z) struct { double r, i; } z; cabs computes the absolute value, or modulus, of its complex ar- gument z. The absolute value of a complex number is the length of the hypotenuse of a right triangle whose sides are given by the real part r and the imaginary part i. The result is the square root of the sum of the squares of the parts. ***** Example ***** For an example of this function, see the entry for acos. ***** See Also ***** hypot(), mathematics library COHERENT Lexicon Page 1