From 1754c71f45b6c56b55f5e9e0bb7e77c8083c96bb Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Sun, 14 Apr 2019 23:32:53 +1000
Subject: [PATCH] py/runtime: Optimise to not create temp float for int to
 power negative.

---
 py/runtime.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/py/runtime.c b/py/runtime.c
index 75d50596e..9210070de 100644
--- a/py/runtime.c
+++ b/py/runtime.c
@@ -456,8 +456,7 @@ mp_obj_t mp_binary_op(mp_binary_op_t op, mp_obj_t lhs, mp_obj_t rhs) {
                 case MP_BINARY_OP_INPLACE_POWER:
                     if (rhs_val < 0) {
                         #if MICROPY_PY_BUILTINS_FLOAT
-                        lhs = mp_obj_new_float(lhs_val);
-                        goto generic_binary_op;
+                        return mp_obj_float_binary_op(op, lhs_val, rhs);
                         #else
                         mp_raise_ValueError("negative power with no float support");
                         #endif