From 0aa2ebbbf39d716dcb84f313aadd85fe06c166dc Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Tue, 26 Dec 2017 16:59:32 -0500
Subject: [PATCH] Clear signed/unsigned warnings with GCC and -Wall -Wextra

---
 simon.cpp | 4 ++--
 speck.cpp | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/simon.cpp b/simon.cpp
index b2918f6c..f7fa8517 100644
--- a/simon.cpp
+++ b/simon.cpp
@@ -53,7 +53,7 @@ inline void SIMON_Encrypt(W c[2], const W p[2], const W k[R])
 {
     c[0]=p[0]; c[1]=p[1];
 
-    for (size_t i = 0; static_cast<int>(i) < R-1; i += 2)
+    for (int i = 0; i < static_cast<int>(R-1); i += 2)
         R2(c[0], c[1], k[i], k[i + 1]);
 
     if (R & 1)
@@ -82,7 +82,7 @@ inline void SIMON_Decrypt(W p[2], const W c[2], const W k[R])
         rounds--;
     }
 
-    for (size_t i = rounds - 2; static_cast<int>(i) >= 0; i -= 2)
+    for (int i = static_cast<int>(rounds - 2); i >= 0; i -= 2)
         R2(p[1], p[0], k[i + 1], k[i]);
 }
 
diff --git a/speck.cpp b/speck.cpp
index 135f80c0..63aa4f4f 100644
--- a/speck.cpp
+++ b/speck.cpp
@@ -64,7 +64,7 @@ inline void SPECK_Encrypt(W c[2], const W p[2], const W k[R])
     c[0]=p[0]; c[1]=p[1];
 
     // Don't unroll this loop. Things slow down.
-    for (size_t i=0; static_cast<int>(i)<R; ++i)
+    for (int i = 0; i < static_cast<int>(R); ++i)
         TF83(c[0], c[1], k[i]);
 }
 
@@ -80,7 +80,7 @@ inline void SPECK_Decrypt(W p[2], const W c[2], const W k[R])
     p[0]=c[0]; p[1]=c[1];
 
     // Don't unroll this loop. Things slow down.
-    for (size_t i=R-1; static_cast<int>(i)>=0; --i)
+    for (int i = static_cast<int>(R-1); i >= 0; --i)
         TR83(p[0], p[1], k[i]);
 }