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* optimized fpc_val_sint_shortstr

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This commit is contained in:
Jonas Maebe 2001-11-16 15:09:47 +00:00
parent 984f581ef7
commit 1b89398cec
1 changed files with 12 additions and 8 deletions
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20
rtl/inc/sstrings.inc
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@ -380,7 +380,7 @@ end;
Function fpc_Val_SInt_ShortStr(DestSize: longint; Const S: ShortString; var Code: ValSInt): ValSInt; [public, alias:'FPC_VAL_SINT_SHORTSTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
var
u, temp, prev, maxValue: ValUInt;
u, temp, prev, maxPrevValue, maxNewValue: ValUInt;
base : byte;
negative : boolean;
begin
@ -389,7 +389,11 @@ begin
Code:=InitVal(s,negative,base);
if Code>length(s) then
exit;
maxValue := ValUInt(MaxUIntValue) div ValUInt(Base);
maxPrevValue := ValUInt(MaxUIntValue) div ValUInt(Base);
if (base = 10) then
maxNewValue := MaxSIntValue + ord(negative)
else
maxNewValue := MaxUIntValue;
while Code<=Length(s) do
begin
case s[Code] of
@ -402,11 +406,8 @@ begin
Prev := Temp;
Temp := Temp*ValUInt(base);
If (u >= base) or
((base = 10) and
(ValUInt(MaxSIntValue-u+ord(negative)) < Temp)) or
((base <> 10) and
(ValUInt(MaxUIntValue-Temp) < u)) or
(prev > maxValue) Then
(ValUInt(maxNewValue-u) < Temp) or
(prev > maxPrevValue) Then
Begin
fpc_Val_SInt_ShortStr := 0;
Exit
@ -579,7 +580,10 @@ end;
{
$Log$
Revision 1.16 2001-08-13 12:40:16 jonas
Revision 1.17 2001-11-16 15:09:47 jonas
* optimized fpc_val_sint_shortstr
Revision 1.16 2001/08/13 12:40:16 jonas
* renamed some str(x,y) and val(x,y) helpers so the naming scheme is the
same for all string types
+ added the str(x,y) and val(x,y,z) helpers for int64/qword to