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fixes for decimal type

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This commit is contained in:
Sergei Golubchik 2014-10-07 10:53:43 +02:00
parent 7989c62bc0
commit d2e808025a
3 changed files with 20 additions and 1 deletions
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6
mysql-test/r/type_newdecimal.result
View File

@ -1988,3 +1988,9 @@ SELECT d1 * d2 FROM t1;
d1 * d2
0
DROP TABLE t1;
select 0.000000000000000000000000000000000000000000000000001 mod 1;
0.000000000000000000000000000000000000000000000000001 mod 1
0.000000000000000000000000000000
select 0.0000000001 mod 1;
0.0000000001 mod 1
0.0000000001

9
mysql-test/t/type_newdecimal.test
View File

@ -1570,3 +1570,12 @@ SELECT d1 * d2 FROM t1;
DROP TABLE t1;
#
# Test for Bug#18469276: MOD FOR SMALL DECIMALS FAILS
#
select 0.000000000000000000000000000000000000000000000000001 mod 1;
#
# incorrect result
#
select 0.0000000001 mod 1;

6
strings/decimal.c
View File

@ -127,7 +127,6 @@ typedef longlong dec2;
#define DIG_BASE 1000000000
#define DIG_MAX (DIG_BASE-1)
#define DIG_BASE2 ((dec2)DIG_BASE * (dec2)DIG_BASE)
#define ROUND_UP(X) (((X)+DIG_PER_DEC1-1)/DIG_PER_DEC1)
static const dec1 powers10[DIG_PER_DEC1+1]={
1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000};
static const int dig2bytes[DIG_PER_DEC1+1]={0, 1, 1, 2, 2, 3, 3, 4, 4, 4};
@ -136,6 +135,11 @@ static const dec1 frac_max[DIG_PER_DEC1-1]={
999900000, 999990000, 999999000,
999999900, 999999990 };
static inline int ROUND_UP(int x)
{
return (x + (x > 0 ? 1 : -1) * (DIG_PER_DEC1 - 1)) / DIG_PER_DEC1;
}
#ifdef HAVE_valgrind
#define sanity(d) DBUG_ASSERT((d)->len > 0)
#else