# /*##########################################################################
#
# Copyright (C) 2017-2018 European Synchrotron Radiation Facility
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/* This header provides a compatible isnan function across platforms.

   VisualStudio 2008 (i.e., Python2.7) provides a _isnan method and no isnan.

   Usage from cython:

   cdef extern from "isnan.h":
       bint isnan(double x) nogil
*/

#ifndef __ISNAN_H__
#define __ISNAN_H__

#include <math.h>

#if (defined (_MSC_VER) && _MSC_VER < 1800)
#include <float.h>

#define isnan(v) _isnan(v)
#endif

#endif /*__ISNAN_H__*/
