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-rw-r--r-- | ChangeLog | 4 | ||||
-rw-r--r-- | bignum.c | 3 |
2 files changed, 7 insertions, 0 deletions
@@ -1,3 +1,7 @@ +Wed Sep 4 20:22:43 2013 Tanaka Akira <akr@fsij.org> + + * bignum.c (bigdivrem_normal): Add assertions. + Wed Sep 4 19:18:40 2013 Nobuyoshi Nakada <nobu@ruby-lang.org> * internal.h (vm_state_version_t): prefer LONG_LONG to uint64_t. @@ -2640,6 +2640,9 @@ bigdivrem_normal(BDIGIT *zds, size_t zn, const BDIGIT *xds, size_t xn, BDIGIT *y { int shift; + assert(zn == xn + 1); + assert(yn < xn || (xn == yn && yds[yn - 1] <= xds[xn - 1])); + shift = nlz(yds[yn-1]); if (shift) { bary_small_lshift(yds, yds, yn, shift); |