From: Loup Vaillant <loup@loup-vaillant.fr>
Date: Sun, 5 Jan 2020 20:32:41 +0000 (+0100)
Subject: Rolled loop for zero initialisation
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=568437894a93a6f34b7e3cf21332683946c33902;p=Monocypher.git

Rolled loop for zero initialisation

- Compilers optimise loops better.
- We save one line of code this way.

(This is a nitpick: in practice, this doesn't change a thing.)
---

diff --git a/src/monocypher.c b/src/monocypher.c
index 53cbc48..7e55f24 100644
--- a/src/monocypher.c
+++ b/src/monocypher.c
@@ -369,10 +369,9 @@ static void poly_block(crypto_poly1305_ctx *ctx)
 // (re-)initialises the input counter and input buffer
 static void poly_clear_c(crypto_poly1305_ctx *ctx)
 {
-    ctx->c[0]  = 0;
-    ctx->c[1]  = 0;
-    ctx->c[2]  = 0;
-    ctx->c[3]  = 0;
+    FOR (i, 0, 4) {
+        ctx->c[i] = 0;
+    }
     ctx->c_idx = 0;
 }