#if !defined(__cplusplus)
#if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) \
|| defined(__GNUC__) \
|| defined(__INTEL_COMPILER) \
|| defined(__IBMC__) \
#include <complex.h>
#if !defined(_Complex_I)
#error The "complex.h" header does not define the '_Complex_I' macro.
#error Please report this to Cython developers <cython-dev@codespeak.net>
#endif
#endif
#endif