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* some bugs removed

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This commit is contained in:
florian 1999-05-25 20:36:41 +00:00
parent 8d99f7a098
commit 7e183613ef
1 changed files with 32 additions and 13 deletions
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45
rtl/inc/int64.inc
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@ -62,6 +62,7 @@
shift,lzz,lzn : longint;
begin
{!!!!!!!!
divqword:=0;
lzz:=count_leading_zeros(z);
lzn:=count_leading_zeros(n);
@ -81,6 +82,7 @@
dec(shift);
n:=n shr 1;
until shift<=0;
}
end;
function modqword(z,n : qword) : qword;[public,alias: 'FPC_MOD_QWORD'];
@ -131,40 +133,52 @@
q2:=n;
{ the div is coded by the compiler as call to divqword }
{!!!!!!!
if sign then
divint64:=-q1 div q2
else
divint64:=q1 div q2;
}
end;
{ multiplies two qwords }
function mulqword(f1,f2 : qword;checkoverflow : boolean) : qword;[public,alias: 'FPC_MUL_QWORD'];
var
bitpos64 : qword;
zero,bitpos64,bitpos : qword;
l : longint;
begin
mulqword:=0;
{ we can't write currently qword constants directly :( }
zero:=zero xor zero;
mulqword:=zero;
tqwordrec(bitpos64).high:=$80000000;
tqwordrec(bitpos64).low:=0;
tqwordrec(bitpos).high:=0;
tqwordrec(bitpos).low:=1;
for l:=0 to 63 do
begin
if (f2 and bitpos64)<>0 then
if checkoverflow then
{$Q+}
mulqword:=mulqword+f1
{$Q-}
else
mulqword:=mulqword+f1;
if ((f1 and bitpos64)<>0) and checkoverflow then
{ if the highest bit of f1 is set and it isn't the
last run, then an overflow occcurs!
}
if checkoverflow and (l<>63) and
((tqwordrec(f1).high and $80000000)<>0) then
int_overflow;
if (f2 and bitpos)<>zero then
begin
if checkoverflow then
{$Q+}
mulqword:=mulqword+f1
{$Q-}
else
mulqword:=mulqword+f1;
end;
f1:=f1 shl 1;
bitpos64:=bitpos64 shl 1;
bitpos:=bitpos shl 1;
end;
end;
@ -216,12 +230,14 @@
hs : string;
begin
{!!!!!!!!!!!
hs:='';
repeat
hs:=chr(longint(value mod 10)+48)+hs;
value:=value div 10;
until value=0;
s:=hs;
}
end;
procedure int_str(value : int64;var s : string);
@ -243,7 +259,10 @@
{
$Log$
Revision 1.4 1999-05-24 08:43:46 florian
Revision 1.5 1999-05-25 20:36:41 florian
* some bugs removed
Revision 1.4 1999/05/24 08:43:46 florian
* fixed a couple of syntax errors
Revision 1.3 1999/05/23 20:27:27 florian