tls: code shrink

function                                             old     new   delta
lm_add                                                82      78      -4
curve25519                                           793     786      -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-11)             Total: -11 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 7 insertions, 11 deletions

diff --git a/networking/tls_fe.c b/networking/tls_fe.c
index f235082f5..10971bbff 100644
--- a/networking/tls_fe.c
+++ b/networking/tls_fe.c
@@ -43,17 +43,13 @@ typedef uint32_t word32;
 #if 0 //UNUSED
 static void fprime_copy(byte *x, const byte *a)
 {
-    int i;
-    for (i = 0; i < F25519_SIZE; i++)
-        x[i] = a[i];
+        memcpy(x, a, F25519_SIZE);
 }
 #endif
 
 static void lm_copy(byte* x, const byte* a)
 {
-    int i;
-    for (i = 0; i < F25519_SIZE; i++)
-        x[i] = a[i];
+        memcpy(x, a, F25519_SIZE);
 }
 
 #if 0 //UNUSED
@@ -200,7 +196,7 @@ static void fe_load(byte *x, word32 c)
 static void fe_normalize(byte *x)
 {
         byte minusp[F25519_SIZE];
-        word16 c;
+        unsigned c;
         int i;
 
         /* Reduce using 2^255 = 19 mod p */
@@ -219,13 +215,13 @@ static void fe_normalize(byte *x)
          */
         c = 19;
 
-        for (i = 0; i + 1 < F25519_SIZE; i++) {
+        for (i = 0; i < F25519_SIZE - 1; i++) {
                 c += x[i];
                 minusp[i] = (byte)c;
                 c >>= 8;
         }
 
-        c += ((word16)x[i]) - 128;
+        c += ((unsigned)x[i]) - 128;
         minusp[31] = (byte)c;
 
         /* Load x-p if no underflow */
@@ -234,13 +230,13 @@ static void fe_normalize(byte *x)
 
 static void lm_add(byte* r, const byte* a, const byte* b)
 {
-        word16 c = 0;
+        unsigned c = 0;
         int i;
 
         /* Add */
         for (i = 0; i < F25519_SIZE; i++) {
                 c >>= 8;
-                c += ((word16)a[i]) + ((word16)b[i]);
+                c += ((unsigned)a[i]) + ((unsigned)b[i]);
                 r[i] = (byte)c;
         }