From 19f7da48ea790a826d04f5f96e5db60c9f26ca45 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Wed, 2 Jul 2014 09:59:37 +0200
Subject: [PATCH] Use mpz_submul_ui.
---
ChangeLog | 5 +++++
eccdata.c | 4 +---
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 101dbbfe..c08f7d93 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-07-02 Niels Möller <nisse@lysator.liu.se>
+
+ * eccdata.c (ecc_dup): Use mpz_submul_ui, now available in
+ mini-gmp.
+
2014-06-30 Niels Möller <nisse@lysator.liu.se>
* camellia-absorb.c: Include <limits.h>, needed for correct use of
diff --git a/eccdata.c b/eccdata.c
index b8dc0011..13717bb1 100644
--- a/eccdata.c
+++ b/eccdata.c
@@ -151,9 +151,7 @@ ecc_dup (const struct ecc_curve *ecc,
/* x' = t^2 - 2 x */
mpz_mul (x, t, t);
- /* mpz_submul_ui (x, p->x, 2); not available in mini-gmp */
- mpz_mul_ui (m, p->x, 2);
- mpz_sub (x, x, m);
+ mpz_submul_ui (x, p->x, 2);
mpz_mod (x, x, ecc->p);
/* y' = (x - x') * t - y */
--
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