jax.numpy.sign#
- jax.numpy.sign(x, /)[source]#
Returns an element-wise indication of the sign of a number.
LAX-backend implementation of
numpy.sign()
.Original docstring below.
The sign function returns
-1 if x < 0, 0 if x==0, 1 if x > 0
. nan is returned for nan inputs.For complex inputs, the sign function returns
sign(x.real) + 0j if x.real != 0 else sign(x.imag) + 0j
.complex(nan, 0) is returned for complex nan inputs.
- Parameters
x (array_like) – Input values.
- Returns
y – The sign of x. This is a scalar if x is a scalar.
- Return type
ndarray