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 floorl()                Calculate Floor of Long Double Value

 #include   <math.h>

 long double floorl(x);
 long double x;                 Long double value.

    This is the long double precision version of floor(); it returns a
    long double precision value corresponding to the largest integer
    that is . x. See floor() for more information.

    Returns:        Long double precision result.

 Portability:   Not supported by the ANSI standard.