extern int x1f4_rule_expression (void *expression, unsigned bits, const struct x1f4_maginine_type *maginine);
x1f4_rule_expression function performs various expression
expression. The second and third arguments are not yet
used, and for forward compatibility they should be
0 and not
See Optimizing Expressions.
0 for success, non zero otherwise.
If the function fails for whatever reason the expression parsed representation
is still valid, hence ignoring the result is safe. Nonetheless, the expression
parsed representation may be changed by the
execution, even when function fails to complete successfully.
The expresion evaluation stack memory requirements may be changed as a result of expression optimizations, though the new requirements should always be smaller than the former ones.
See Managing Stacks.