[fpc-pascal] {$FINITEFLOAT OFF}
LacaK
lacak at zoznam.sk
Thu Aug 4 08:53:18 CEST 2016
Hi,
does we have in FPC something like Delphi {$FINITEFLOAT OFF} ?
If not can be implemented in future ?
I am trying to avoid FPU exception in case of underflow or overflow values.
I have this test code:
d := 30000; // + or -
d := 1/(1+exp(-1*d)); // here I get SIGFPE exception (my guess is
that it is caused by value underflow -INF or overflow +INF
What can I do in this case ?
I did:
SetExceptionMask(GetExceptionMask() + [exUnderflow,exOverflow]);
It seems to work, but it depends on Math unit, which I want to avoid.
Then I did:
CW := Get8087CW;
SSECW:=GetSSECSR;
Set8087CW(CW or $18); // mask underflow,overflow
SetSSECSR((SSECW and $ffffe07f) or (dword($58) shl 7));
It works for Win32, but not for Win64 ?
TIA
-Laco.
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