44 lines
1.4 KiB
ReStructuredText
44 lines
1.4 KiB
ReStructuredText
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Special functions
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=================
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``scipy``\ ’s ``special`` module defines several functions that behave
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as do the standard mathematical functions of the ``numpy``, i.e., they
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can be called on any scalar, scalar-valued iterable (ranges, lists,
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tuples containing numbers), and on ``ndarray``\ s without having to
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change the call signature. In all cases the functions return a new
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``ndarray`` of typecode ``float`` (since these functions usually
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generate float values, anyway).
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At present, ``ulab``\ ’s ``special`` module contains the following
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functions:
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``erf``, ``erfc``, ``gamma``, and ``gammaln``, and they can be called by
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prepending them by ``scipy.special.``.
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.. code::
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# code to be run in micropython
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from ulab import numpy as np
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from ulab import scipy as spy
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a = range(9)
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b = np.array(a)
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print('a: ', a)
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print(spy.special.erf(a))
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print('\nb: ', b)
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print(spy.special.erfc(b))
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.. parsed-literal::
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a: range(0, 9)
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array([0.0, 0.8427007929497149, 0.9953222650189527, 0.9999779095030014, 0.9999999845827421, 1.0, 1.0, 1.0, 1.0], dtype=float64)
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b: array([0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0], dtype=float64)
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array([1.0, 0.1572992070502851, 0.004677734981047265, 2.209049699858544e-05, 1.541725790028002e-08, 1.537459794428035e-12, 2.151973671249892e-17, 4.183825607779414e-23, 1.122429717298293e-29], dtype=float64)
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