diff: make code more portable

function                                             old     new   delta
create_J                                            1835    1849     +14
diffreg                                             1268    1255     -13

Signed-off-by: Dan Fandrich <dan@coneharvesters.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
1 file changed