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Fix for bug #31236: Inconsistent division by zero behavior for

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floating point numbers

Some math functions did not check if the result is a valid number
(i.e. neither of +-inf or nan).

Fixed by validating the result where necessary and returning NULL in
case of invalid result.
This commit is contained in:
kaa@kaamos.(none)
2008-02-20 00:33:43 +03:00
parent 947529acf3
commit 8d222210c7
11 changed files with 62 additions and 82 deletions
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4
sql/field.cc
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@ -2263,13 +2263,11 @@ int Field_decimal::store(double nr)
return 1;
}
#ifdef HAVE_FINITE
if (!finite(nr)) // Handle infinity as special case
if (!isfinite(nr)) // Handle infinity as special case
{
overflow(nr < 0.0);
return 1;
}
#endif
reg4 uint i;
size_t length;