wolfcrypt/src/integer.c and wolfssl/wolfcrypt/integer.h: constify args to mp_cmp() and mp_cmp_mag().

Author: douzzer

wolfcrypt/src/integer.c

@@ -1392,10 +1392,10 @@ LBL_ERR:mp_clear(&x);
 
 
 /* compare magnitude of two ints (unsigned) */
-int mp_cmp_mag (mp_int * a, mp_int * b)
+int mp_cmp_mag (const mp_int * a, const mp_int * b)
 {
   int     n;
-  mp_digit *tmpa, *tmpb;
+  const mp_digit *tmpa, *tmpb;
 
   /* compare based on # of non-zero digits */
   if (a->used > b->used) {
@@ -1430,7 +1430,7 @@ int mp_cmp_mag (mp_int * a, mp_int * b)
 
 
 /* compare two ints (signed)*/
-int mp_cmp (mp_int * a, mp_int * b)
+int mp_cmp (const mp_int * a, const mp_int * b)
 {
   /* compare based on sign */
   if (a->sign != b->sign) {

wolfssl/wolfcrypt/integer.h

@@ -345,8 +345,8 @@ MP_API int  mp_abs (mp_int * a, mp_int * b);
 MP_API int  mp_invmod (mp_int * a, mp_int * b, mp_int * c);
 int  fast_mp_invmod (mp_int * a, mp_int * b, mp_int * c);
 MP_API int  mp_invmod_slow (mp_int * a, mp_int * b, mp_int * c);
-MP_API int  mp_cmp_mag (mp_int * a, mp_int * b);
-MP_API int  mp_cmp (mp_int * a, mp_int * b);
+MP_API int  mp_cmp_mag (const mp_int * a, const mp_int * b);
+MP_API int  mp_cmp (const mp_int * a, const mp_int * b);
 #define mp_cmp_ct(a, b, n) mp_cmp(a, b)
 MP_API int  mp_cmp_d(mp_int * a, mp_digit b);
 MP_API int  mp_set (mp_int * a, mp_digit b);