ENH: Added test cases to ensure the behavior of integer as it is.
There is a need to add test case which ensure and maintain the behaviour
of integer. As per pr #3567, which speed up integer scalar's operations
by avoiding the conversion of integer to NumPy Scalar.
Added test case for size of long based of os
added int test for error raises
Add support for using openblas for the _dotblas function.
BLD: Update with information about openblas.
DOC: hfft/ihfft description conflicts with itself

Says Hermite spectrum when it means signal
Removing test for OS choices on long conventions
ENH: Make the ndarray diagonal method return a view.

Also remove the test_diagonal_deprecation test and add test that
checks that a view is returned and that it is not writeable.

Closes #596.
Merge pull request #3645 from charris/enable-diagonal-as-view

ENH: Make the ndarray diagonal method return a view.
DOC: Add examples, copy some text from rfft functions to clarify inputs and outputs
DOC: add note clarifying why ifftshift is needed
Merge pull request #3592 from arinkverma/int_behaviour

ENH: Added test cases to ensure the behavior of integer as it is.
Small correction in the docstring of polyfit. As mentionned in Issue 3640, the notes were wrong in the order of the index for p.
FIX: wrong function types in ufunc_object.c

assign_reduce_identity_{zero,one} were treated as
PyArray_AssignReduceIdentityFunc, but that type has
an extra void* argument. Added the argument.
FIX: remove unused variables and add casts

Makes the build complete with fewer warnings.
MAINT: ignore some more generated C files.
Merge pull request #3653 from larsmans/c-fixes

FIX: call through wrong function pointer type + minor stuff
BUG: Set __hash__ = None for non-hashable classes.

Because neither poly1d nor the Polynomial package polynomial classes are
immutable, hence not reliably hashable, they should signal that by
setting __hash__ = None. This also fixes the warning

Overriding __eq__ blocks inheritance of __hash__ in 3.x

that is given when the command `python2.7 -3 -c"import numpy"` is run.
ENH: Avoiding conversion of integer to NumPy Scalar.
There is a bottleneck in scalar operations, when trying to extract the
underlying C value from a Python integer/float. I have avoid conversion
for know integer type but extracting its value.
Extracting longlong value without converting it to NyType