Function cast_raw_scalar_item

numpy/core/src/multiarray/array_coercion.c:389–424

* Helper function for casting a raw value from one descriptor to another. * This helper uses the normal casting machinery, but e.g. does not care about * checking cast safety. */

 * checking cast safety.
 */
static int
cast_raw_scalar_item(
        PyArray_Descr *from_descr, char *from_item,
        PyArray_Descr *to_descr, char *to_item)
{
    NPY_cast_info cast_info;
    NPY_ARRAYMETHOD_FLAGS flags;
    if (PyArray_GetDTypeTransferFunction(
            0, 0, 0, from_descr, to_descr, 0, &cast_info,
            &flags) == NPY_FAIL) {
        return -1;
    }

    if (!(flags & NPY_METH_NO_FLOATINGPOINT_ERRORS)) {
        npy_clear_floatstatus_barrier(from_item);
    }

    char *args[2] = {from_item, to_item};
    const npy_intp strides[2] = {0, 0};
    const npy_intp length = 1;
    if (cast_info.func(&cast_info.context,
            args, &length, strides, cast_info.auxdata) < 0) {
        NPY_cast_info_xfree(&cast_info);
        return -1;
    }
    NPY_cast_info_xfree(&cast_info);

    if (!(flags & NPY_METH_NO_FLOATINGPOINT_ERRORS)) {
        int fpes = npy_get_floatstatus_barrier(to_item);
        if (fpes && PyUFunc_GiveFloatingpointErrors("cast", fpes) < 0) {
            return -1;
        }
    }

    return 0;
}


/**