1 files changed, 24 insertions, 12 deletions

diff --git a/src/ltm/bn_mp_reduce_2k_l.c b/src/ltm/bn_mp_reduce_2k_l.c
index 6a9f3d31..afdc3219 100644
--- a/src/ltm/bn_mp_reduce_2k_l.c
+++ b/src/ltm/bn_mp_reduce_2k_l.c
@@ -1,41 +1,49 @@
 #include "tommath_private.h"
 #ifdef BN_MP_REDUCE_2K_L_C
-/* LibTomMath, multiple-precision integer library -- Tom St Denis */
-/* SPDX-License-Identifier: Unlicense */
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * SPDX-License-Identifier: Unlicense
+ */
 
 /* reduces a modulo n where n is of the form 2**p - d
    This differs from reduce_2k since "d" can be larger
    than a single digit.
 */
-mp_err mp_reduce_2k_l(mp_int *a, const mp_int *n, const mp_int *d)
+int mp_reduce_2k_l(mp_int *a, const mp_int *n, const mp_int *d)
 {
    mp_int q;
-   mp_err err;
-   int    p;
+   int    p, res;
 
-   if ((err = mp_init(&q)) != MP_OKAY) {
-      return err;
+   if ((res = mp_init(&q)) != MP_OKAY) {
+      return res;
    }
 
    p = mp_count_bits(n);
 top:
    /* q = a/2**p, a = a mod 2**p */
-   if ((err = mp_div_2d(a, p, &q, a)) != MP_OKAY) {
+   if ((res = mp_div_2d(a, p, &q, a)) != MP_OKAY) {
       goto LBL_ERR;
    }
 
    /* q = q * d */
-   if ((err = mp_mul(&q, d, &q)) != MP_OKAY) {
+   if ((res = mp_mul(&q, d, &q)) != MP_OKAY) {
       goto LBL_ERR;
    }
 
    /* a = a + q */
-   if ((err = s_mp_add(a, &q, a)) != MP_OKAY) {
+   if ((res = s_mp_add(a, &q, a)) != MP_OKAY) {
       goto LBL_ERR;
    }
 
    if (mp_cmp_mag(a, n) != MP_LT) {
-      if ((err = s_mp_sub(a, n, a)) != MP_OKAY) {
+      if ((res = s_mp_sub(a, n, a)) != MP_OKAY) {
          goto LBL_ERR;
       }
       goto top;
@@ -43,7 +51,11 @@ top:
 
 LBL_ERR:
    mp_clear(&q);
-   return err;
+   return res;
 }
 
 #endif
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */