[Numpy-discussion] NaN value processing in weave.inline code

Hi, I was wondering if it is possible to process (in if statement - check if the given value is NaN) numpy NaN value inside the weave.inline c code. testcode = ''' if (test(0)) { return_val = test(0); } ''' err = weave.inline(testcode, ['test'], type_converters = converters.blitz, force = 0, verbose = 1) with test(0) = nan returns err = nan correctly, but I don't know how to check the nan value inside the c inline c code. Is there any way I can get similar functionality as isnan? Thank you, Joon --