double floor (double x);
double floor (double x); float floorf (float x);long double floorl (long double x);
double floor (double x); float floor (float x);long double floor (long double x);
double floor (double x); float floor (float x);long double floor (long double x); double floor (T x); // additional overloads for integral types
<cmath> ) for the integral types: These overloads effectively cast x to a double before calculations (defined for T being any integral type ).1
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/* floor example */
#include <stdio.h> /* printf */
#include <math.h> /* floor */
int main ()
{
printf ( "floor of 2.3 is %.1lf\n", floor (2.3) );
printf ( "floor of 3.8 is %.1lf\n", floor (3.8) );
printf ( "floor of -2.3 is %.1lf\n", floor (-2.3) );
printf ( "floor of -3.8 is %.1lf\n", floor (-3.8) );
return 0;
}floor of 2.3 is 2.0 floor of 3.8 is 3.0 floor of -2.3 is -3.0 floor of -3.8 is -4.0