Function try_binary_elide

numpy/core/src/multiarray/temp_elide.c:339–364

* try eliding a binary op, if commutative is true also try swapped arguments */

 * try eliding a binary op, if commutative is true also try swapped arguments
 */
NPY_NO_EXPORT int
try_binary_elide(PyObject * m1, PyObject * m2,
                 PyObject * (inplace_op)(PyArrayObject * m1, PyObject * m2),
                 PyObject ** res, int commutative)
{
    /* set when no elision can be done independent of argument order */
    int cannot = 0;
    if (can_elide_temp(m1, m2, &cannot)) {
        *res = inplace_op((PyArrayObject *)m1, m2);
#if NPY_ELIDE_DEBUG != 0
        puts("elided temporary in binary op");
#endif
        return 1;
    }
    else if (commutative && !cannot) {
        if (can_elide_temp(m2, m1, &cannot)) {
            *res = inplace_op((PyArrayObject *)m2, m1);
#if NPY_ELIDE_DEBUG != 0
            puts("elided temporary in commutative binary op");
#endif
            return 1;
        }
    }
    *res = NULL;
    return 0;
}

/* try elide unary temporary */
NPY_NO_EXPORT int