HyperGP.tensor.arctan

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HyperGP.tensor.arctan#

arctan(x)[source]#

Inverse tan of an array, elementwise.

So that if y = tan(x) then x = arctan(y)

Parameters:

x (Tensor or array_like) – Elements to calculate the inverse tan.

Returns:

the inverse tan values of an array.

Return type:

ret(Tensor)

Examples

import modules

>>> import numpy as np
>>> from HyperGP import Tensor
>>> import time

array initialization

>>> x1 = np.random.uniform(-1, 1, size=(500, 100000))
>>> x1_t = Tensor(x1)

runtime test

>>> st = time.time()
>>> ar = [np.arctan(x1) for i in range(10)]
>>> print("numpy runtime: ", time.time() - st)

>>> st = time.time()
>>> ar = [HyperGP.arctan(x1_t) for i in range(10)]
>>> print("HyperGP runtime: ", time.time() - st)
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