From e08b8fcc74d6ef7b2b5d0197256422c222450f90 Mon Sep 17 00:00:00 2001
From: Roman Artiukhin <bahusdrive@gmail.com>
Date: Sat, 10 May 2025 16:12:31 +0300
Subject: [PATCH] strcasecmp: Optimize size and speed

Applies changes similar to strncasecmp in 64c0cfb0.

Change-Id: I5f80b0031dd12c58d982578f5c5224c7f59cd915
---
 firmware/common/strcasecmp.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/firmware/common/strcasecmp.c b/firmware/common/strcasecmp.c
index cdfbe2f81a..24a9def904 100644
--- a/firmware/common/strcasecmp.c
+++ b/firmware/common/strcasecmp.c
@@ -5,12 +5,14 @@
 #ifndef strcasecmp
 int strcasecmp(const char *s1, const char *s2)
 {
-    while (*s1 != '\0' && tolower(*s1) == tolower(*s2)) {
-        s1++;
-        s2++;
+    int d, c1, c2;
+    do
+    {
+        c1 = tolower(*s1++);
+        c2 = tolower(*s2++);
     }
-
-    return tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
+    while ((d = c1 - c2) == 0 && c1 && c2);
+    return d;
 }
 #endif