Finished getcube

1 files changed, 4 insertions, 2 deletions

diff --git a/src/utils.h b/src/utils.h
index 3d35437..021ca75 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -1,3 +1,5 @@
+#define _swap(x, y) do { x ^= y; y ^= x; x ^= y; } while (0)
+
 _static int64_t factorial(int64_t);
 _static bool isperm(uint8_t *, int64_t);
 _static int64_t permtoindex(uint8_t *, int64_t);
@@ -138,7 +140,7 @@ digitstosumzero(uint8_t *a, uint8_t n, uint8_t b)
                 return -1;
         }
 
-        for (i = 1, ret = 0, p = 1; i < n; i++, p *= (int64_t)b) {
+        for (i = 1, ret = 0, p = 1, sum = 0; i < n; i++, p *= (int64_t)b) {
                 if (a[i] >= b) {
                         LOG("Error: digit %" PRIu8 " larger than maximum"
                             " (b=%" PRIu8 "\n", a[i], b);
@@ -168,7 +170,7 @@ sumzerotodigits(int64_t d, uint8_t n, uint8_t b, uint8_t *a)
                 goto digitstosumzero_error;
         }
 
-        for (i = 1; i < n; i++, d /= (int64_t)b) {
+        for (i = 1, sum = 0; i < n; i++, d /= (int64_t)b) {
                 a[i] = (uint8_t)(d % (int64_t)b);
                 sum += a[i];
         }