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#include <cmath>float floor(float num);double floor(double num); long double floor(long double num);
The floor( ) function returns the largest integer (represented as a floating-point value) not greater than num. For example, given 1.02, floor( ) would return 1.0. Given –1.02, floor( ) would return –2.0.
Related functions are fceil( ) and fmod( ).
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