pytaco.tensor_log

pytaco.tensor_log(t1, out_format, dtype=None)

Takes the natural log of each input in the tensor.

Note that this is applied to all elements in the tensor not just non-zeros.

Parameters

t1: tensor, array_like

input tensor or array_like object

out_format: format, mode_format, optional

If a format is specified, the result tensor is stored in the format out_format.
If a mode_format is specified, the result the result tensor has a with all of the dimensions stored in the mode_format passed in.

dtype: Datatype

The datatype of the output tensor.

Returns

natural log: tensor: The element wise natural log of the input tensor.

Warning

The log of 0 is undefined and is performed on every element in the tensor regardless of sparsity.

Examples

>>> import pytaco as pt
>>> pt.tensor_log([4, 16], out_format=pt.compressed, dtype=pt.float32).to_array()
array([1.3862944, 2.7725887], dtype=float32)