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-rw-r--r--libtommath/bn_mp_mul.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libtommath/bn_mp_mul.c b/libtommath/bn_mp_mul.c
index cc3b9c8..b8b85c8 100644
--- a/libtommath/bn_mp_mul.c
+++ b/libtommath/bn_mp_mul.c
@@ -16,7 +16,7 @@
*/
/* high level multiplication (handles sign) */
-int mp_mul (mp_int * a, mp_int * b, mp_int * c)
+int mp_mul (const mp_int * a, const mp_int * b, mp_int * c)
{
int res, neg;
neg = (a->sign == b->sign) ? MP_ZPOS : MP_NEG;