The numpy.sign (array [, out]) function is used to indicate the sign of a number element by element.
For integer inputs, if the array value is greater than 0, 1 is returned, if the array value is less than 0, -1 is returned, and if the array value is 0, 0.
Syntax: numpy.sign ()
array: [array_like] Input values.
out: [ndarray, optional] Output array placed with result.
Return: [ndarray] Returns the sign of array. If an array is scalar then the sign of array will be scalar.
array1: [1, 0 , -13] array2: [-1, 0, 15] Check sign of array1: [1 0 -1] Check sign of array2: [-1 0 1]
Code 2: strong>
Check sign of complex input1: (1 + 0j) Check sign of complex input2: (-1 + 0j)
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