<--snip-->

> Hi,
> by looking at the latest git code:
>

> static const struct op operators[] ALIGN_PTR = {
> #if ENABLE_FEATURE_DC_LIBM
> {"^", power},
> // {"exp", power},
> // {"pow", power},
> #endif
> {"%", mod},
> // {"mod", mod},
> // logic ops are not standard, remove?
> {"and", and},
> {"or", or},
> {"not", not},
> {"xor", eor},
> {"+", add},
> // {"add", add},
> {"-", sub},
> // {"sub", sub},
> {"*", mul},
> // {"mul", mul},
> {"/", divide},
> // {"div", divide},
> {"p", print_no_pop},
> {"f", print_stack_no_pop},
> {"o", set_output_base},
> };
>

> it seems to me that mod, add, sub, mul, div are disabled
> and only %, +, -, *, / are supported.
> Cannot say if simply uncommenting them restores
> the previous functionality, could be worth a try.
> Eventually if it works a patch for making them optional
> (CONFIG_DC_LONG_OPS or the like) could be sent
> to the list.


Perform a 'git blame' and then chase the relevant commit hash....a potential for 'git revert'.