diff options
Diffstat (limited to 'strings')
| -rw-r--r-- | strings/decimal.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/strings/decimal.c b/strings/decimal.c index 3d90a58ea8a..05546aa77a3 100644 --- a/strings/decimal.c +++ b/strings/decimal.c @@ -2077,26 +2077,21 @@ int decimal_mul(const decimal_t *from1, const decimal_t *from2, decimal_t *to) } } - /* Now we have to check for -0.000 case */ - if (to->sign) + /* Remove trailing zero words in frac part */ + frac0= ROUND_UP(to->frac); + + if (frac0 > 0 && to->buf[intg0 + frac0 - 1] == 0) { - dec1 *buf= to->buf; - dec1 *end= to->buf + intg0 + frac0; - DBUG_ASSERT(buf != end); - for (;;) + do { - if (*buf) - break; - if (++buf == end) - { - /* We got decimal zero */ - decimal_make_zero(to); - break; - } - } + frac0--; + } while (frac0 > 0 && to->buf[intg0 + frac0 - 1] == 0); + to->frac= DIG_PER_DEC1 * frac0; } + + /* Remove heading zero words in intg part */ buf1= to->buf; - d_to_move= intg0 + ROUND_UP(to->frac); + d_to_move= intg0 + frac0; while (!*buf1 && (to->intg > DIG_PER_DEC1)) { buf1++; @@ -2109,6 +2104,14 @@ int decimal_mul(const decimal_t *from1, const decimal_t *from2, decimal_t *to) for (; d_to_move--; cur_d++, buf1++) *cur_d= *buf1; } + + /* Now we have to check for -0.000 case */ + if (to->sign && to->frac == 0 && to->buf[0] == 0) + { + DBUG_ASSERT(to->intg <= DIG_PER_DEC1); + /* We got decimal zero */ + decimal_make_zero(to); + } return error; } |