cython

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cdef extern from *:
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    """
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    #if PY_MAJOR_VERSION >= 3
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      #define __Pyx_PyFloat_FromString(obj)  PyFloat_FromString(obj)
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    #else
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      #define __Pyx_PyFloat_FromString(obj)  PyFloat_FromString(obj, NULL)
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    #endif
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    """
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cdef extern from "Python.h":
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    ############################################################################
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    # 7.2.3
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    ############################################################################
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    # PyFloatObject
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    #
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    # This subtype of PyObject represents a Python floating point object.
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    # PyTypeObject PyFloat_Type
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    #
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    # This instance of PyTypeObject represents the Python floating
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    # point type. This is the same object as float and
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    # types.FloatType.
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    bint PyFloat_Check(object p)
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    # Return true if its argument is a PyFloatObject or a subtype of
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    # PyFloatObject.
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    bint PyFloat_CheckExact(object p)
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    # Return true if its argument is a PyFloatObject, but not a
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    # subtype of PyFloatObject.
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    object PyFloat_FromString "__Pyx_PyFloat_FromString" (object str)
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    # Return value: New reference.
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    # Create a PyFloatObject object based on the string value in str,
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    # or NULL on failure. The pend argument is ignored. It remains
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    # only for backward compatibility.
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    object PyFloat_FromDouble(double v)
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    # Return value: New reference.
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    # Create a PyFloatObject object from v, or NULL on failure.
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    double PyFloat_AsDouble(object pyfloat) except? -1
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    # Return a C double representation of the contents of pyfloat.
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    double PyFloat_AS_DOUBLE(object pyfloat)
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    # Return a C double representation of the contents of pyfloat, but
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    # without error checking.
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