floor()                  Calculate Floor of Value
 
 #include   <math.h>
 
 double     floor(x);
 double     x;                           Floating-point value
 
    floor() returns the double value integer that is less than or equal
    to 'x'.
 
    Returns:    Largest integer <= 'x'. There is no error return.
 
  -------------------------------- Example ---------------------------------
 
    The following statements calculate the floor of 3.3, 0.0 and -3.3.
 
         #include <math.h>      /* Required for function definition only */
 
         main()
         {
             double x, y, z;
 
             x = floor(3.3);     /* x = 3.0 */
             y = floor(0.0);     /* y = 0.0 */
             z = floor(-3.3);    /* z = -4.0 */
         }

Seealso:


 ceil() 
 fmod()