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From: Sasha <nd...@ma...> - 2006-01-18 20:08:42
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As of svn version 1931, numpy bool_ values are singletons: >>> from numpy import * >>> bool_(0) is array([True,False])[1] This change makes bool_ values behavior more similar to python bools and will allow much faster implementation of scalar boolean algebra.=20 In order to allow other modules to take advantage of this property, I would like to propose several additions to python and c interfaces. At the Python level: define True_ and False_ constants. At the C-API level: PyArrayScalar_True PyArrayScalar_False PyArrayScalar_BoolFromLong PyArrayScalar_RETURN_TRUE PyArrayScalar_RETURN_FALSE PyArrayScalar_RETURN_BOOL_FROM_LONG Any objections? -- sasha |