paweld/fpc
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/fpc/source.git synced 2025-08-10 19:45:59 +02:00
Code Issues Packages Projects Releases Wiki Activity

* fixed IsNan and IsInf for big endian systems

Browse Source
This commit is contained in:
florian 2004-05-29 12:28:59 +00:00
parent a9b2ee072f
commit ef303e5570
1 changed files with 10 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
rtl/objpas/math.pp
View File

@ -1235,15 +1235,15 @@ function IsNan(const d : Double): Boolean;
var var
fraczero, expMaximal: boolean; fraczero, expMaximal: boolean;
begin begin
{$if defined(BIG_ENDIAN) or (defined(CPUARM) and defined(FPUFPA))} {$if defined(FPC_BIG_ENDIAN) or (defined(CPUARM) and defined(FPUFPA))}
expMaximal := ((TSplitDouble(d).cards[0] shr 20) and $7ff) = 2047; expMaximal := ((TSplitDouble(d).cards[0] shr 20) and $7ff) = 2047;
fraczero:= (TSplitDouble(d).cards[0] and $fffff = 0) and fraczero:= (TSplitDouble(d).cards[0] and $fffff = 0) and
(TSplitDouble(d).cards[1] = 0); (TSplitDouble(d).cards[1] = 0);
{$else BIG_ENDIAN} {$else FPC_BIG_ENDIAN}
expMaximal := ((TSplitDouble(d).cards[1] shr 20) and $7ff) = 2047; expMaximal := ((TSplitDouble(d).cards[1] shr 20) and $7ff) = 2047;
fraczero := (TSplitDouble(d).cards[1] and $fffff = 0) and fraczero := (TSplitDouble(d).cards[1] and $fffff = 0) and
(TSplitDouble(d).cards[0] = 0); (TSplitDouble(d).cards[0] = 0);
{$endif BIG_ENDIAN} {$endif FPC_BIG_ENDIAN}
Result:=expMaximal and not(fraczero); Result:=expMaximal and not(fraczero);
end; end;
@ -1252,15 +1252,15 @@ function IsInfinite(const d : Double): Boolean;
var var
fraczero, expMaximal: boolean; fraczero, expMaximal: boolean;
begin begin
{$if defined(BIG_ENDIAN) or (defined(CPUARM) and defined(FPUFPA))} {$if defined(FPC_BIG_ENDIAN) or (defined(CPUARM) and defined(FPUFPA))}
expMaximal := ((TSplitDouble(d).cards[0] shr 20) and $7ff) = 2047; expMaximal := ((TSplitDouble(d).cards[0] shr 20) and $7ff) = 2047;
fraczero:= (TSplitDouble(d).cards[0] and $fffff = 0) and fraczero:= (TSplitDouble(d).cards[0] and $fffff = 0) and
(TSplitDouble(d).cards[1] = 0); (TSplitDouble(d).cards[1] = 0);
{$else BIG_ENDIAN} {$else FPC_BIG_ENDIAN}
expMaximal := ((TSplitDouble(d).cards[1] shr 20) and $7ff) = 2047; expMaximal := ((TSplitDouble(d).cards[1] shr 20) and $7ff) = 2047;
fraczero := (TSplitDouble(d).cards[1] and $fffff = 0) and fraczero := (TSplitDouble(d).cards[1] and $fffff = 0) and
(TSplitDouble(d).cards[0] = 0); (TSplitDouble(d).cards[0] = 0);
{$endif BIG_ENDIAN} {$endif FPC_BIG_ENDIAN}
Result:=expMaximal and fraczero; Result:=expMaximal and fraczero;
end; end;
@ -1325,7 +1325,10 @@ end;
end. end.
{ {
$Log$ $Log$
Revision 1.21 2004-04-08 16:37:08 peter Revision 1.22 2004-05-29 12:28:59 florian
* fixed IsNan and IsInf for big endian systems
Revision 1.21 2004/04/08 16:37:08 peter
* disable range,overflow check when generating Nan/Inf * disable range,overflow check when generating Nan/Inf
Revision 1.20 2004/02/20 20:10:44 florian Revision 1.20 2004/02/20 20:10:44 florian