isinf(x, /, out=None, *, where=True, casting='same_kind', order='K', dtype=None, subok=True[, signature, extobj])
Some inconsistencies with the Dask version may exist.
Test element-wise for positive or negative infinity.
Returns a boolean array of the same shape as x
, True where x ==
+/-inf
, otherwise False.
NumPy uses the IEEE Standard for Binary Floating-Point for Arithmetic (IEEE 754).
Errors result if the second argument is supplied when the first argument is a scalar, or if the first and second arguments have different shapes.
Input values
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.
This condition is broadcast over the input. At locations where the condition is True, the :None:None:`out`
array will be set to the ufunc result. Elsewhere, the :None:None:`out`
array will retain its original value. Note that if an uninitialized :None:None:`out`
array is created via the default out=None
, locations within it where the condition is False will remain uninitialized.
For other keyword-only arguments, see the ufunc docs <ufuncs.kwargs>
.
True where x
is positive or negative infinity, false otherwise. This is a scalar if x
is a scalar.
This docstring was copied from numpy.isinf.
>>> np.isinf(np.inf) # doctest: +SKIP TrueThis example is valid syntax, but we were not able to check execution
>>> np.isinf(np.nan) # doctest: +SKIP FalseThis example is valid syntax, but we were not able to check execution
>>> np.isinf(np.NINF) # doctest: +SKIP TrueThis example is valid syntax, but we were not able to check execution
>>> np.isinf([np.inf, -np.inf, 1.0, np.nan]) # doctest: +SKIP array([ True, True, False, False])This example is valid syntax, but we were not able to check execution
>>> x = np.array([-np.inf, 0., np.inf]) # doctest: +SKIPThis example is valid syntax, but we were not able to check execution
... y = np.array([2, 2, 2]) # doctest: +SKIP
... np.isinf(x, y) # doctest: +SKIP array([1, 0, 1])
>>> y # doctest: +SKIP array([1, 0, 1])See :
The following pages refer to to this document either explicitly or contain code examples using this.
dask.array.ufunc.isfinite
dask.array.ufunc.isnan
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