Mapping of std::complex<T> <-> Python complex.

[SVN r9305]

example/cmplx.cpp

@@ -0,0 +1,42 @@
+#include <iostream>
+#include <complex>
+
+namespace { // Avoid cluttering the global namespace.
+
+  std::complex<double> dpolar(double rho, double theta) {
+    return std::polar(rho, theta);
+  }
+  double dreal(const std::complex<double>& c) { return c.real(); }
+  double dimag(std::complex<double> c) { return c.imag(); }
+
+  std::complex<float> fpolar(float rho, float theta) {
+    return std::polar(rho, theta);
+  }
+  double freal(const std::complex<float>& c) { return c.real(); }
+  double fimag(std::complex<float> c) { return c.imag(); }
+}
+
+#include <boost/python/class_builder.hpp>
+namespace python = boost::python;
+
+extern "C"
+DL_EXPORT(void)
+initcmplx()
+{
+  try
+  {
+    // Create an object representing this extension module.
+    python::module_builder this_module("cmplx");
+
+    this_module.def(dpolar, "dpolar");
+    this_module.def(dreal, "dreal");
+    this_module.def(dimag, "dimag");
+    this_module.def(fpolar, "fpolar");
+    this_module.def(freal, "freal");
+    this_module.def(fimag, "fimag");
+  }
+  catch(...)
+  {
+    python::handle_exception(); // Deal with the exception for Python
+  }
+}