C Tutorial/math.h/floor

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floor

Item Value Header file math.h Declaration float floorf(float num);double floor(double num);long double floorl(long double num); Return returns the largest integer (represented as a floating-point value) not greater than num.

  1. Given 1.02, floor() would return 1.0.
  2. Given -1.02, floor() would return -2.0.


<source lang="cpp">#include <math.h>

 #include <stdio.h>
 int main(void)
 {
   printf("%f", floor(10.9));

 }</source>