python patch: convert int/double to complex

From: Peter.Bienstman_at_[hidden]
Date: 2001-07-06 08:50:25

Hi,

This simple patch adds automatic type conversions from Python ints, 
longs and doubles to C++ complex numbers.

Useful for me, but useful enough to be included in a future release?

*** boost_orig/boost_1_22_0/boost/python/conversions.hpp        Mon 
May 28 17:11:56
 2001
--- boost_1_22_0/boost/python/conversions.hpp   Fri Jul  6 15:22:18 
2001
***************
*** 93,98 ****
--- 93,105 ----
    template <class T>
    std::complex<T> complex_from_python(PyObject* p, 
boost::python::type<T>)
    {
+       if (PyInt_Check(p))
+         return static_cast<T>(PyInt_AS_LONG(p));
+       if (PyLong_Check(p))
+         return static_cast<T>(PyLong_AsLong(p));
+       if (PyFloat_Check(p))
+         return static_cast<T>(PyFloat_AS_DOUBLE(p));
+
        expect_complex(p);

        return std::complex<T>(

-------------------------------------
Peter Bienstman
Department of Information Technology
INTEC/IMEC - Ghent University
St.-Pietersnieuwstraat 41
B-9000 Gent - Belgium
E-mail: Peter.Bienstman_at_[hidden]
Tel: [phone]
Fax: [phone]
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