Java floor floorDivide(long numerator, long denominator)

Description

Divide two long integers, returning the floor of the quotient.

License

Open Source License

Parameter

Parameter	Description
numerator	the numerator
denominator	a divisor which must be > 0

Return

the floor of the quotient.

Declaration

private static final long floorDivide(long numerator, long denominator) 

Method Source Code

//package com.java2s;
/* ====================================================================
 * The OpenSymphony Software License, Version 1.1
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 * (this license is derived and fully compatible with the Apache Software
 * License - see http://www.apache.org/LICENSE.txt)
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public class Main {
    /**
     * Divide two long integers, returning the floor of the quotient.
     * <p>
     * Unlike the built-in division, this is mathematically well-behaved.
     * E.g., <code>-1/4</code> => 0
     * but <code>floorDivide(-1,4)</code> => -1.
     * @param numerator the numerator
     * @param denominator a divisor which must be > 0
     * @return the floor of the quotient.
     */
    private static final long floorDivide(long numerator, long denominator) {
        // We do this computation in order to handle
        // a numerator of Long.MIN_VALUE correctly
        return (numerator >= 0) ? (numerator / denominator)
                : (((numerator + 1) / denominator) - 1);
    }
}

Related

1. floorDiv(int v1, int v2)
2. floorDiv(long a, long b)
3. floorDiv(long x, long y)
4. floorDivide(int value, int divisor)
5. floorDivide(long n, long d)
6. floorDivision(int i, int divisor)
7. floorHalf(int num)
8. floorInt(Double d, double intv)
9. floorInt(float x)