hgt312 commented on a change in pull request #15382: [numpy][doc-fix] sum,
copy, tile, argmax, sign, log, degrees
URL: https://github.com/apache/incubator-mxnet/pull/15382#discussion_r298873978
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File path: python/mxnet/symbol/numpy/_symbol.py
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@@ -1561,6 +1573,44 @@ def sqrt(x, out=None, **kwargs):
return _unary_func_helper(x, _npi.sqrt, _np.sqrt, out=out, **kwargs)
+@set_module('mxnet.symbol.numpy')
+def sign(x, out=None, **kwargs):
+ r"""
+ Returns an element-wise indication of the sign of a number.
+
+ The `sign` function returns ``-1 if x < 0, 0 if x==0, 1 if x > 0``. Only
supports real number.
+
+ Parameters
+ ----------
+ x : _Symbol or a scalar
+ Input values.
+ out : _Symbol or None, optional
Review comment:
Use this for unary ops.
```
out : _Symbol or None
Dummy parameter to keep the consistency with the ndarray counterpart.
```
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