fix warning about overflow if matiec is running on 64-bit platform,
but the generated C code will cross-compiled for 32-bit platform
For example:
./build/config.c:29:39: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
unsigned long greatest_tick_count__ = 18446744073709551611UL; /*tick*/
^
compilation terminated due to -Wfatal-errors.
cc1: all warnings being treated as errors
FUNCTION_BLOCK HYSTERESIS (* Boolean hysteresis on difference *) (* of REAL inputs, XIN1 - XIN2 *) VAR_INPUT XIN1, XIN2, EPS : REAL; END_VAR VAR_OUTPUT Q : BOOL := 0; END_VAR IF Q THEN IF XIN1 < (XIN2 - EPS) THEN Q := 0; END_IF ; ELSIF XIN1 > (XIN2 + EPS) THEN Q := 1 ; END_IF ;END_FUNCTION_BLOCK