From c451b22255706989f58cfd88be486e5117979a28 Mon Sep 17 00:00:00 2001
From: Jeff Epler <jepler@gmail.com>
Date: Tue, 24 Nov 2020 10:26:47 -0600
Subject: Disable 3-arg pow() function on m0 boards

`pow(a, b, c)` can compute `(a ** b) % c` efficiently (in time and memory).
This can be useful for extremely specific applications, like implementing
the RSA cryptosystem.  For typical uses of CircuitPython, this is not an
important feature.  A survey of the bundle and learn system didn't find
any uses.

Disable it on M0 builds so that we can fit in needed upgrades to the USB
stack.
---
 ports/atmel-samd/mpconfigport.mk | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'ports')

diff --git a/ports/atmel-samd/mpconfigport.mk b/ports/atmel-samd/mpconfigport.mk
index 1929e146d..17e3995bf 100644
--- a/ports/atmel-samd/mpconfigport.mk
+++ b/ports/atmel-samd/mpconfigport.mk
@@ -29,6 +29,10 @@ ifndef CIRCUITPY_AUDIOMP3
 CIRCUITPY_AUDIOMP3 = 0
 endif
 
+ifndef CIRCUITPY_BUILTINS_POW3
+CIRCUITPY_BUILTINS_POW3 = 0
+endif
+
 ifndef CIRCUITPY_FREQUENCYIO
 CIRCUITPY_FREQUENCYIO = 0
 endif
-- 
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