Returns the largest integer less than or equal to the argument.

    Format

      #include  <math.h>

      double floor  (double x);

      float floorf  (float x); (Integrity servers, Alpha)

      long double floorl  (long double x);

                          (Integrity servers, Alpha)

1 - Argument

 x

    A real value.

2 - Return Value

    n                  The largest integer less than or equal to the
                       argument.