| commit | ed0f45f296b18e956cd09cbb72995e42d16055c8 | |
| author | Dan Carpenter <dan.carpenter@oracle.com> | |
| Wed, 23 Jan 2013 12:48:34 +0000 (23 15:48 +0300) | ||
| committer | Dan Carpenter <dan.carpenter@oracle.com> | |
| Wed, 23 Jan 2013 12:48:34 +0000 (23 15:48 +0300) | ||
| tree | d39318f72c1a0952077d3c03b4e97bcc6b654faa | treesnapshot (tar.gz zip) |
| parent | 2d002be825c42f986911a49b07ea134a1c8029a2 | commitdiff |
math: use smatch_comparison.c for handling subtraction
Basically the idea here is that if we know "a" is larger than "b" then
"a - b" is a number between "1 - a".
The implementation isn't totally right. There are some issues with
signedness. But I've been using it for a while and it doesn't seem to
cause many false positives.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Basically the idea here is that if we know "a" is larger than "b" then
"a - b" is a number between "1 - a".
The implementation isn't totally right. There are some issues with
signedness. But I've been using it for a while and it doesn't seem to
cause many false positives.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| smatch_math.c | diffblobblamehistory |