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fixed Bug #3051 "FLOOR returns invalid"

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This commit is contained in:
vva@eagle.mysql.r18.ru
2004-03-04 22:11:33 +04:00
parent c00ef445fd
commit cba6ff7597
3 changed files with 16 additions and 1 deletions
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6
mysql-test/r/func_math.result
View File

@ -32,3 +32,9 @@ ASIN(0.8+0.2)
1.570796
ASIN(1.2-0.2)
1.570796
floor(log(4)/log(2))
2
floor(log(8)/log(2))
3
floor(log(16)/log(2))
4

8
mysql-test/t/func_math.test
View File

@ -24,3 +24,11 @@ SELECT ACOS(0.2*5.0);
SELECT ACOS(0.5*2.0);
SELECT ASIN(0.8+0.2);
SELECT ASIN(1.2-0.2);
#
# Bug #3051 FLOOR returns invalid
#
select floor(log(4)/log(2));
select floor(log(8)/log(2));
select floor(log(16)/log(2));

3
sql/item_func.cc
View File

@ -572,7 +572,8 @@ longlong Item_func_ceiling::val_int()
longlong Item_func_floor::val_int()
{
double value=args[0]->val();
// the volatile's for BUG #3051 to calm optimizer down (because of gcc's bug)
volatile double value=args[0]->val();
null_value=args[0]->null_value;
return (longlong) floor(value);
}