sign(x: array, /) array

Returns an indication of the sign of a number for each element x_i of the input array x.

Special cases

  • If x_i is less than 0, the result is -1.

  • If x_i is either -0 or +0, the result is 0.

  • If x_i is greater than 0, the result is +1.


x (array) – input array. Should have a numeric data type.


out (array) – an array containing the evaluated result for each element in x. The returned array must have the same data type as x.