Returns the floating-point remainder r = x - n*y) when y is
    nonzero.

    This function is supported on OpenVMS Integrity servers and
    Alpha only.

    Format

      #include  <math.h>

      double remainder  (double x, double y);

      float remainderf  (float x, float y);

      long double remainderl  (long double x, long double y);

  Additional Information (explode) :

• Argument
• Description
• Return Values