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Fix for bug #13820 (No warning on log(NEGATIVE))

Browse Source 
mysql-test/r/func_math.result:
  result fixed
mysql-test/t/func_math.test:
  test case added
sql/item_func.cc:
  tests for (value<=0.0) added to LOG* functions
This commit is contained in:
unknown
2005-10-17 12:32:22 +05:00
parent ccb796a9ce
commit 1f6bc6550f
3 changed files with 71 additions and 6 deletions
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27
mysql-test/r/func_math.result
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@ -170,3 +170,30 @@ insert into t1 values (1);
select rand(i) from t1;
ERROR HY000: Incorrect arguments to RAND
drop table t1;
set sql_mode='traditional';
select ln(-1);
ln(-1)
NULL
Warnings:
Error 1365 Division by 0
select log10(-1);
log10(-1)
NULL
Warnings:
Error 1365 Division by 0
select log2(-1);
log2(-1)
NULL
Warnings:
Error 1365 Division by 0
select log(2,-1);
log(2,-1)
NULL
Warnings:
Error 1365 Division by 0
select log(-2,1);
log(-2,1)
NULL
Warnings:
Error 1365 Division by 0
set sql_mode='';