Singular

Sorry, you cannot set the exit code from within Singular.
In general: non-zero is some kind of crash (out of memroy etc.).

Hans Schoenemann

Is it possible to set the exit status of Singular process to be the return value of certain procedure.
e.g
// File code.sing
proc abc()
{
return(123);
}

abc();
// EOF code.sing

$ > Singular < code.sing
123
>
$ > echo $?
0

I want to set 123 as an answer to this!! How do I set this? I have tried giving return_value of the proc to exit, but it didnt work.
proc abc()
{
return(123);
}
int ret = abc();
exit(ret);

I hope I have made myself clear enough.
Thanks,

VInay