Stefan Behnel wrote: > Dag Sverre Seljebotn, 03.12.2009 10:52: > >>> - Python's floating point type is double, so it should be perfectly >>> safe to do >>> >>> cdef double f(): ... >>> x = f() # infer x as double >>> >>> By the same argument one might actually want to do >>> >>> cdef float f(): ... >>> x = f() # infer x as *double* -- because that's what Python would use >>> > > That's actually an orthogonal feature: aliasing Python's float type to C's > double type in general, including support for methods etc. Since 'double' > is immutable and has exactly the same value range as Python's float type, > this is something that can always be done safely. If I'm not mistaken, even > Python's operators behave exactly like the equivalent C operators here, > right? And numeric operations would always return a double, so even > operations on doubles that involve integers would run completely in C space. > > Apart from a couple of further optimisations for methods and properties, I > think enabling type inference here would give us a rather warmly requested > feature. > This is now http://trac.cython.org/cython_trac/ticket/460.
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