我看到以下错误:
E2009 不兼容类型:'参数列表不同'
然而我不同意,从定义上看我没有发现任何差异。
这是记录定义:
type
TFastDiv = record
private
...
DivideFunction: function (const Buffer: TFastDiv; x: integer): integer;
以下是我想要分配的模数函数:
function dividefixedi32(const Buffer: TFastDiv; x: integer): integer;
asm
以下的任务出现了错误:
class operator TFastDiv.Implicit(a: integer): TFastDiv;
begin
if (a = 0) then begin
raise EDivByZero.Create('Setting a zero divider is a division by zero error')
at ReturnAddress;
end;
Result.FSign:= Math.sign(a);
case Result.FSign of
-1: begin
SetDivisorI32(Result, a);
Result.DivideFunction:= dividefixedi32; <<-- error E2009
我的代码有什么问题?
SSCCE
(简单自给的完整性测试)unit SSCCE;
interface
uses Math;
type
TFastDiv = record
private
FBuffer: UInt64; // The reciprocal of the divider
FDivider: integer; // The divider itself (need with modulus etc).
FSign: TValueSign;
DivideFunction: function (const Buffer: TFastDiv; x: integer): integer;
ModFunction: function (const Buffer: TFastDiv; x: integer): integer;
public
class operator Implicit(a: integer): TFastDiv;
end;
implementation
uses SysUtils;
function dividefixedi32(const Buffer: TFastDiv; x: integer): integer; forward;
class operator TFastDiv.Implicit(a: integer): TFastDiv;
begin
if (a = 0) then begin raise EDivByZero.Create('Setting a zero divider is a division by zero error') at ReturnAddress; end;
Result.FSign:= Math.sign(a);
case Result.FSign of
-1: begin
//SetDivisorI32(Result, a);
Result.DivideFunction:= dividefixedi32;
end; {-1:}
1: begin
//SetDivisorU32(Result.FBuffer, a);
end; {1:}
end; {case}
Result.FDivider:= a;
end;
function dividefixedi32(const Buffer: TFastDiv; x: integer): integer;
asm
mov eax, edx
mov r8d, edx // x
mov r9, rcx // Buffer
imul dword [r9] // m
lea eax, [rdx+r8] // r8 = r8 or rsi
mov ecx, [r9+4] // shift count
sar eax, cl
sar r8d, 31 // sign(x)
sub eax, r8d
ret
end;
end.
TFastDiv
类型在范围内相互冲突。 - Remy Lebeau