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changed hints a little

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Norayr Chilingarian 2013-10-30 22:04:03 +04:00
parent 80a34fe70c
commit 8d6b0063bb
1 changed files with 10 additions and 3 deletions
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@ -26,6 +26,13 @@ add it in OPC.GenHeaderMsg function.
==known bugs==
when SYSTEM.LSH(s, n) where s is SET c compiler generates an error: "error: duplicate 'unsigned'", that's because SET is defined as unsigned already and LSH is defined in SYSTEM.h as ((t)((unsigned t)(x)<<(n))), that's why currently it's not possible to make SYSTEM.LSH with type SET.
I don't want to prohibit it at the parser level because C backend is only one of possible backends.
The solution currently is to cast set type to longint before lsh-ing it. And then casting it back to set if necessary.
when using SYSTEM.LSH(s, n) where s is SET,
c compiler generates an error like
"error: duplicate 'unsigned'",
that's because SET is defined as unsigned in SYSTEM.h,
while LSH is defined in SYSTEM.h as ((t)((unsigned t)(x)<<(n))),
and it makes not possible to make SYSTEM.LSH with type SET.
I don't want to prohibit it at the parser level
because C backend is only one of possible backends.
The solution currently is to cast set type to longint before lsh-ing it.
And then casting it back to set if necessary.