From 7e1d891e84f58eacdb770cf9e7469e2b3d419ade Mon Sep 17 00:00:00 2001
From: "Dirk O. Kaar" <dok@dok-net.net>
Date: Tue, 28 Jan 2020 22:42:47 +0100
Subject: [PATCH] Revert to explicit calculation of modulo, saving 16 bytes in
 IROM.

---
 cores/esp8266/Print.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cores/esp8266/Print.cpp b/cores/esp8266/Print.cpp
index 37259109e..c9ead745f 100644
--- a/cores/esp8266/Print.cpp
+++ b/cores/esp8266/Print.cpp
@@ -280,8 +280,9 @@ size_t Print::printNumber(unsigned long n, uint8_t base) {
         base = 10;
 
     do {
-        char c = n % base;
+        unsigned long m = n;
         n /= base;
+        char c = m - base * n;
 
         *--str = c < 10 ? c + '0' : c + 'A' - 10;
     } while(n);
@@ -300,8 +301,9 @@ size_t Print::printNumber(unsigned long long n, uint8_t base) {
         base = 10;
 
     do {
-        char c = n % base;
+        unsigned long m = n;
         n /= base;
+        char c = m - base * n;
 
         *--str = c < 10 ? c + '0' : c + 'A' - 10;
     } while(n);