diff options
Diffstat (limited to 'ext')
| -rw-r--r-- | ext/bigdecimal/bigdecimal.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c index 1eef609b95..266983c785 100644 --- a/ext/bigdecimal/bigdecimal.c +++ b/ext/bigdecimal/bigdecimal.c @@ -4196,14 +4196,14 @@ VpAddAbs(Real *a, Real *b, Real *c) /* Just assign the last few digits of b to c because a has no */ /* corresponding digits to be added. */ - while (b_pos + word_shift > a_pos) { - --c_pos; - if (b_pos > 0) { - c->frac[c_pos] = b->frac[--b_pos]; + if (b_pos > 0) { + while (b_pos > 0 && b_pos + word_shift > a_pos) { + c->frac[--c_pos] = b->frac[--b_pos]; } - else { - --word_shift; - c->frac[c_pos] = 0; + } + if (b_pos == 0 && word_shift > a_pos) { + while (word_shift-- > a_pos) { + c->frac[--c_pos] = 0; } } @@ -4299,16 +4299,16 @@ VpSubAbs(Real *a, Real *b, Real *c) /* each of the last few digits of the b because the a has no */ /* corresponding digits to be subtracted. */ if (b_pos + word_shift > a_pos) { - while (b_pos + word_shift > a_pos) { - --c_pos; - if (b_pos > 0) { - c->frac[c_pos] = BASE - b->frac[--b_pos] - borrow; - } - else { + while (b_pos > 0 && b_pos + word_shift > a_pos) { + c->frac[--c_pos] = BASE - b->frac[--b_pos] - borrow; + borrow = 1; + } + if (b_pos == 0) { + while (word_shift > a_pos) { --word_shift; - c->frac[c_pos] = BASE - borrow; + c->frac[--c_pos] = BASE - borrow; + borrow = 1; } - borrow = 1; } } /* Just assign the last few digits of a to c because b has no */ |