From 895d1eb539e81e7a14ef70bbfa740e90677f051d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@des.no>
Date: Wed, 29 Mar 2017 18:07:03 +0200
Subject: [PATCH] Constify where possible.

---
 include/cryb/mpi.h         | 16 ++++++++--------
 lib/mpi/cryb_mpi_add.c     |  2 +-
 lib/mpi/cryb_mpi_add_abs.c |  2 +-
 lib/mpi/cryb_mpi_cmp.c     |  2 +-
 lib/mpi/cryb_mpi_cmp_abs.c |  2 +-
 lib/mpi/cryb_mpi_eq.c      |  2 +-
 lib/mpi/cryb_mpi_eq_abs.c  |  2 +-
 lib/mpi/cryb_mpi_sub.c     |  2 +-
 lib/mpi/cryb_mpi_sub_abs.c |  4 ++--
 9 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/include/cryb/mpi.h b/include/cryb/mpi.h
index 9ef8147..84c7bf3 100644
--- a/include/cryb/mpi.h
+++ b/include/cryb/mpi.h
@@ -82,14 +82,14 @@ int mpi_load(cryb_mpi *, const uint8_t *, size_t);
 int mpi_set(cryb_mpi *, int32_t);
 int mpi_lshift(cryb_mpi *, unsigned int);
 int mpi_rshift(cryb_mpi *, unsigned int);
-int mpi_add_abs(cryb_mpi *, cryb_mpi *, cryb_mpi *);
-int mpi_add(cryb_mpi *, cryb_mpi *, cryb_mpi *);
-int mpi_sub_abs(cryb_mpi *, cryb_mpi *, cryb_mpi *);
-int mpi_sub(cryb_mpi *, cryb_mpi *, cryb_mpi *);
-int mpi_cmp_abs(cryb_mpi *, cryb_mpi *);
-int mpi_cmp(cryb_mpi *, cryb_mpi *);
-int mpi_eq_abs(cryb_mpi *, cryb_mpi *);
-int mpi_eq(cryb_mpi *, cryb_mpi *);
+int mpi_add_abs(cryb_mpi *, const cryb_mpi *, const cryb_mpi *);
+int mpi_add(cryb_mpi *, const cryb_mpi *, const cryb_mpi *);
+int mpi_sub_abs(cryb_mpi *, const cryb_mpi *, const cryb_mpi *);
+int mpi_sub(cryb_mpi *, const cryb_mpi *, const cryb_mpi *);
+int mpi_cmp_abs(const cryb_mpi *, const cryb_mpi *);
+int mpi_cmp(const cryb_mpi *, const cryb_mpi *);
+int mpi_eq_abs(const cryb_mpi *, const cryb_mpi *);
+int mpi_eq(const cryb_mpi *, const cryb_mpi *);
 
 CRYB_END
 
diff --git a/lib/mpi/cryb_mpi_add.c b/lib/mpi/cryb_mpi_add.c
index cb3e7c6..9cec071 100644
--- a/lib/mpi/cryb_mpi_add.c
+++ b/lib/mpi/cryb_mpi_add.c
@@ -40,7 +40,7 @@
  * Add two numbers together.
  */
 int
-mpi_add(cryb_mpi *X, cryb_mpi *A, cryb_mpi *B)
+mpi_add(cryb_mpi *X, const cryb_mpi *A, const cryb_mpi *B)
 {
 
 	if (A->neg && B->neg) {
diff --git a/lib/mpi/cryb_mpi_add_abs.c b/lib/mpi/cryb_mpi_add_abs.c
index 5562264..3d3e2c1 100644
--- a/lib/mpi/cryb_mpi_add_abs.c
+++ b/lib/mpi/cryb_mpi_add_abs.c
@@ -40,7 +40,7 @@
  * Store the sum of the absolutes values of A and B in X.
  */
 int
-mpi_add_abs(cryb_mpi *X, cryb_mpi *A, cryb_mpi *B)
+mpi_add_abs(cryb_mpi *X, const cryb_mpi *A, const cryb_mpi *B)
 {
 	unsigned int i;
 	uint32_t c;
diff --git a/lib/mpi/cryb_mpi_cmp.c b/lib/mpi/cryb_mpi_cmp.c
index 9a20bff..3ce516b 100644
--- a/lib/mpi/cryb_mpi_cmp.c
+++ b/lib/mpi/cryb_mpi_cmp.c
@@ -41,7 +41,7 @@
  * Compare signed values
  */
 int
-mpi_cmp(cryb_mpi *X, cryb_mpi *Y)
+mpi_cmp(const cryb_mpi *X, const cryb_mpi *Y)
 {
 
 	if (X->neg) {
diff --git a/lib/mpi/cryb_mpi_cmp_abs.c b/lib/mpi/cryb_mpi_cmp_abs.c
index 55fda43..58d0f9d 100644
--- a/lib/mpi/cryb_mpi_cmp_abs.c
+++ b/lib/mpi/cryb_mpi_cmp_abs.c
@@ -41,7 +41,7 @@
  * Compare absolute values
  */
 int
-mpi_cmp_abs(cryb_mpi *X, cryb_mpi *Y)
+mpi_cmp_abs(const cryb_mpi *X, const cryb_mpi *Y)
 {
 	int i;
 
diff --git a/lib/mpi/cryb_mpi_eq.c b/lib/mpi/cryb_mpi_eq.c
index 07c784a..359447f 100644
--- a/lib/mpi/cryb_mpi_eq.c
+++ b/lib/mpi/cryb_mpi_eq.c
@@ -41,7 +41,7 @@
  * Compare signed values for equality
  */
 int
-mpi_eq(cryb_mpi *A, cryb_mpi *B)
+mpi_eq(const cryb_mpi *A, const cryb_mpi *B)
 {
 
 	return (A->neg == B->neg && A->msb == B->msb &&
diff --git a/lib/mpi/cryb_mpi_eq_abs.c b/lib/mpi/cryb_mpi_eq_abs.c
index 64b1c17..8f98935 100644
--- a/lib/mpi/cryb_mpi_eq_abs.c
+++ b/lib/mpi/cryb_mpi_eq_abs.c
@@ -41,7 +41,7 @@
  * Compare absolute values for equality
  */
 int
-mpi_eq_abs(cryb_mpi *A, cryb_mpi *B)
+mpi_eq_abs(const cryb_mpi *A, const cryb_mpi *B)
 {
 
 	return (A->msb == B->msb &&
diff --git a/lib/mpi/cryb_mpi_sub.c b/lib/mpi/cryb_mpi_sub.c
index 40074a6..88db1ba 100644
--- a/lib/mpi/cryb_mpi_sub.c
+++ b/lib/mpi/cryb_mpi_sub.c
@@ -40,7 +40,7 @@
  * Subtract one number from another.
  */
 int
-mpi_sub(cryb_mpi *X, cryb_mpi *A, cryb_mpi *B)
+mpi_sub(cryb_mpi *X, const cryb_mpi *A, const cryb_mpi *B)
 {
 
 	if (A->neg && B->neg) {
diff --git a/lib/mpi/cryb_mpi_sub_abs.c b/lib/mpi/cryb_mpi_sub_abs.c
index 32d950f..7335be9 100644
--- a/lib/mpi/cryb_mpi_sub_abs.c
+++ b/lib/mpi/cryb_mpi_sub_abs.c
@@ -40,9 +40,9 @@
  * Store the difference between the absolute values of A and B in X.
  */
 int
-mpi_sub_abs(cryb_mpi *X, cryb_mpi *A, cryb_mpi *B)
+mpi_sub_abs(cryb_mpi *X, const cryb_mpi *A, const cryb_mpi *B)
 {
-	cryb_mpi *L, *G;
+	const cryb_mpi *L, *G;
 	unsigned int i;
 	uint32_t c, cn;