[GitHub] [incubator-mxnet] hgt312 commented on a change in pull request #15387: Add docs for 7 ops

[GitBox <gi...@apache.org>]

hgt312 commented on a change in pull request #15387: Add docs for 7 ops
URL: https://github.com/apache/incubator-mxnet/pull/15387#discussion_r299300689
 
 

 ##########
 File path: python/mxnet/ndarray/numpy/_op.py
 ##########
 @@ -882,3 +902,123 @@ def sqrt(x, out=None, **kwargs):
     This function only supports input type of float.
     """
     return _unary_func_helper(x, _npi.sqrt, _np.sqrt, out=out, **kwargs)
+
+@set_module('mxnet.ndarray.numpy')
+def arctanh(x, out=None, where=True, **kwargs):
+    r"""
+    arctanh(x, out=None, where=True)
+
+    Inverse hyperbolic tangent element-wise.
+
+    Parameters:	
+
+    -----------
+    x : ndarray 
+        Input array.
+    out : ndarray, None.
+          A location into which the result is stored. If provided, 
+          it must have a shape that the inputs broadcast to. 
+          If not provided or None, a freshly-allocated array is returned. 
+          A tuple (possible only as a keyword argument) 
+          must have length equal to the number of outputs.
+    where : ndarray, optional
+            Values of True indicate to calculate the ufunc at that position, 
+            values of False indicate to leave the value in the output alone.
+    Returns:	
+    --------
+    out : ndarray or scalar
+          ndarray of the same shape as x. This is a scalar if x is a scalar.
+    Examples
+
+    >>> np.arctan(0.7)
+    0.8673005276940531
+    """
+
+    return _unary_func_helper(x, _npi.arctanh, _np.arctanh, out=out, **kwargs)
+
+@set_module('mxnet.ndarray.numpy')
+def tan(x, out=None, where=True, **kwargs):
+    r"""
+    tan(x, out=None, where=True, **kwargs)
+
+    Compute tangent element-wise.
+    Equivalent to np.sin(x)/np.cos(x) element-wise.
+    
+    Parameters:	
+    ----------
+    x : array_like
+        Input array.
+    out : ndarray, None, or tuple of ndarray and None, optional
+          A location into which the result is stored. If provided, 
+          it must have a shape that the inputs broadcast to. If not provided or None, 
+          a freshly-allocated array is returned. A tuple (possible only as a keyword argument) 
+          must have length equal to the number of outputs.
+    where : ndarray, optional
+            Values of True indicate to calculate the ufunc at that position, 
+            values of False indicate to leave the value in the output alone.
+
+    Returns:	
+    -------
+    y : ndarray
+    The corresponding tangent values. This is a scalar if x is a scalar.
+
+    Examples:
+
+    >>> np.tan(0.5)
+    0.5463024898437905 
+    """
+
+    return _unary_func_helper(x, _npi.tan, _np.tan, out=out, **kwargs)
+
+@set_module('mxnet.ndarray.numpy')
+def fix(x, out=None):
+    r"""
+    Round an array of floats element-wise to nearest integer towards zero. 
+    The rounded values are returned as floats.
+    
 
 Review comment:
   remove whitespaces

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