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authorjan.nijtmans <nijtmans@users.sourceforge.net>2017-09-15 14:44:00 (GMT)
committerjan.nijtmans <nijtmans@users.sourceforge.net>2017-09-15 14:44:00 (GMT)
commitd4e73bcab52ca3c76e007a1acc7cb76f50b8feb5 (patch)
tree4598f9d64ea232476fcf18bbef6bd413444c0c07 /libtommath/bn_mp_add_d.c
parentce32fdecb2337a3ce69b0fb71295c46478019e86 (diff)
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re-format everything through astyle. Taken from libtom/libtommath (pull request [https://github.com/libtom/libtommath/pull/85|85])
Diffstat (limited to 'libtommath/bn_mp_add_d.c')
-rw-r--r--libtommath/bn_mp_add_d.c171
1 files changed, 85 insertions, 86 deletions
diff --git a/libtommath/bn_mp_add_d.c b/libtommath/bn_mp_add_d.c
index fd1a186..1e6ff63 100644
--- a/libtommath/bn_mp_add_d.c
+++ b/libtommath/bn_mp_add_d.c
@@ -16,93 +16,92 @@
*/
/* single digit addition */
-int
-mp_add_d (mp_int * a, mp_digit b, mp_int * c)
+int mp_add_d(mp_int *a, mp_digit b, mp_int *c)
{
- int res, ix, oldused;
- mp_digit *tmpa, *tmpc, mu;
-
- /* grow c as required */
- if (c->alloc < (a->used + 1)) {
- if ((res = mp_grow(c, a->used + 1)) != MP_OKAY) {
- return res;
- }
- }
-
- /* if a is negative and |a| >= b, call c = |a| - b */
- if ((a->sign == MP_NEG) && ((a->used > 1) || (a->dp[0] >= b))) {
- /* temporarily fix sign of a */
- a->sign = MP_ZPOS;
-
- /* c = |a| - b */
- res = mp_sub_d(a, b, c);
-
- /* fix sign */
- a->sign = c->sign = MP_NEG;
-
- /* clamp */
- mp_clamp(c);
-
- return res;
- }
-
- /* old number of used digits in c */
- oldused = c->used;
-
- /* source alias */
- tmpa = a->dp;
-
- /* destination alias */
- tmpc = c->dp;
-
- /* if a is positive */
- if (a->sign == MP_ZPOS) {
- /* add digit, after this we're propagating
- * the carry.
- */
- *tmpc = *tmpa++ + b;
- mu = *tmpc >> DIGIT_BIT;
- *tmpc++ &= MP_MASK;
-
- /* now handle rest of the digits */
- for (ix = 1; ix < a->used; ix++) {
- *tmpc = *tmpa++ + mu;
- mu = *tmpc >> DIGIT_BIT;
- *tmpc++ &= MP_MASK;
- }
- /* set final carry */
- ix++;
- *tmpc++ = mu;
-
- /* setup size */
- c->used = a->used + 1;
- } else {
- /* a was negative and |a| < b */
- c->used = 1;
-
- /* the result is a single digit */
- if (a->used == 1) {
- *tmpc++ = b - a->dp[0];
- } else {
- *tmpc++ = b;
- }
-
- /* setup count so the clearing of oldused
- * can fall through correctly
- */
- ix = 1;
- }
-
- /* sign always positive */
- c->sign = MP_ZPOS;
-
- /* now zero to oldused */
- while (ix++ < oldused) {
- *tmpc++ = 0;
- }
- mp_clamp(c);
-
- return MP_OKAY;
+ int res, ix, oldused;
+ mp_digit *tmpa, *tmpc, mu;
+
+ /* grow c as required */
+ if (c->alloc < (a->used + 1)) {
+ if ((res = mp_grow(c, a->used + 1)) != MP_OKAY) {
+ return res;
+ }
+ }
+
+ /* if a is negative and |a| >= b, call c = |a| - b */
+ if ((a->sign == MP_NEG) && ((a->used > 1) || (a->dp[0] >= b))) {
+ /* temporarily fix sign of a */
+ a->sign = MP_ZPOS;
+
+ /* c = |a| - b */
+ res = mp_sub_d(a, b, c);
+
+ /* fix sign */
+ a->sign = c->sign = MP_NEG;
+
+ /* clamp */
+ mp_clamp(c);
+
+ return res;
+ }
+
+ /* old number of used digits in c */
+ oldused = c->used;
+
+ /* source alias */
+ tmpa = a->dp;
+
+ /* destination alias */
+ tmpc = c->dp;
+
+ /* if a is positive */
+ if (a->sign == MP_ZPOS) {
+ /* add digit, after this we're propagating
+ * the carry.
+ */
+ *tmpc = *tmpa++ + b;
+ mu = *tmpc >> DIGIT_BIT;
+ *tmpc++ &= MP_MASK;
+
+ /* now handle rest of the digits */
+ for (ix = 1; ix < a->used; ix++) {
+ *tmpc = *tmpa++ + mu;
+ mu = *tmpc >> DIGIT_BIT;
+ *tmpc++ &= MP_MASK;
+ }
+ /* set final carry */
+ ix++;
+ *tmpc++ = mu;
+
+ /* setup size */
+ c->used = a->used + 1;
+ } else {
+ /* a was negative and |a| < b */
+ c->used = 1;
+
+ /* the result is a single digit */
+ if (a->used == 1) {
+ *tmpc++ = b - a->dp[0];
+ } else {
+ *tmpc++ = b;
+ }
+
+ /* setup count so the clearing of oldused
+ * can fall through correctly
+ */
+ ix = 1;
+ }
+
+ /* sign always positive */
+ c->sign = MP_ZPOS;
+
+ /* now zero to oldused */
+ while (ix++ < oldused) {
+ *tmpc++ = 0;
+ }
+ mp_clamp(c);
+
+ return MP_OKAY;
}
#endif