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NumPy | floor_divide method

schedule Aug 11, 2023

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Parameters Return value Examples Dividing by a common divisor Dividing by multiple divisors

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Numpy's floor_divide(~) method performs element-wise floor division given two arrays. Floor division means that 5//2=2 as opposed to true division, which is 5/2=2.5.

WARNING

Opt to use the // operator instead

If you don't need the 3rd and 4th parameters of this method, simply divide two arrays using the // operator - you'll enjoy a performance boost.

Parameters

1. x1 | array_like

An array acting as the dividend.

2. x2 | array_like

An array acting as the divisor.

3. out | Numpy array | optional

Instead of creating a new array, you can place the computed result into the array specified by out.

4. where | array of boolean | optional

Values that are flagged as False will be ignored, that is, their original value will be uninitialized. If you specified the out parameter, the behavior is slightly different - the original value will be kept intact.

Return value

A scalar is returned if x1 and x2 are scalars, otherwise a Numpy array is returned.

Examples

Dividing by a common divisor


        
        
            
                
                
                    x = [2,6,9]
np.floor_divide(x, 2)
                
            
            array([1, 3, 4])

Dividing by multiple divisors


        
        
            
                
                
                    x = [2,6,9]
np.floor_divide(x, [2,3,4])
                
            
            array([1, 2, 2])

Here, we are doing 2//2=1, 6//3=2 and 9//4=2.

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Published by Isshin Inada

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