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floor

Syntax:

    #include <cmath>
    double floor( double arg );

The function floor() returns the largest integer not greater than arg. For example,

     y = 6.04;
     x = floor( y );

would result in x being set to 6.0. Note that the reverse is true when arg<0; in other words, this function effectively chops off everything after the decimal point.

C++ also provides the following overloaded forms:

    #include <cmath>
    float floor( float arg ); // same as floorf() in C99
    long double floor( long double arg ); // same as floorl() in C99

Related Topics: ceil, fmod

 
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