Python methods on corresponding C types (float/int)

[scoder]

It would be nice if Cython could emulate the instance methods of Python types on the corresponding C types (such as int or float). That way, you could say

    cdef float f = 0.5
    print f.is_integer()

This would not necessarily be efficiently implemented as plain C code (especially when there is no trivial implementation or corresponding C-API call). It's only meant to make C types a bit simpler to use from a Python POV.

[dagss]

#460 makes this even ticket more attractive than it seems initially.

[scoder]

This is rather easy to achieve by simply coercing the value to a Python object and calling the method on that. The rest would be optimisations for cases where it matters (see OptimizeBuiltinCalls in Optimize.py for a long list of similar cases).

Implemented in

 http://hg.cython.org/cython-devel/rev/56bc793d18e0

[scoder]

Test case is here:

 http://hg.cython.org/cython-devel/rev/609f2037a6b6