Class NumExprReg

numexpr3/numexpr_object.hpp:37–44

We can pack the tuples in Python and pass them in directly? General idea here is to not access the Python API directly after initial processing.

// General idea here is to not access the Python API directly after initial 
// processing.
struct NumExprReg 
{
    char          *mem;        // Pointer to array data for scalars and temps (npy_iter used for arrays)
    char           dchar;      // numpy.dtype.char
    npy_uint8      kind;       // 1 = array, 2 = scalar, 4 = temp, 8 = return
    npy_intp       itemsize;   // element size in bytes   (was: memsizes)
    npy_intp       stride;     // How many bytes until next element  (was: memsteps)
};

// Presently the PyObject_HEAD macro expands into a single PyObject
// When copying data we generally don't want to overwrite the head.