LongWord($133f)这句是什么意思

[fieldisme]

LongWord($133f)这句是什么意思，如何转换成bcb的语法？
在用bcb编写浏览器时出现Invalid floating point operation错误，在网上查到要调用Set8087CW(LongWord($133f));，不知道在bcb中怎么表达

[缘中人]

	
LongWord(0x133f);
或者

LongWord lw;
	lw = LongWord(0x133f);

[日立奔腾浪潮微软松下联想]

这个应该用_control87或者_controlfp #include <float.h> _control87(0x133f, 0xffff); 至于LongWord($133f)这是没有什么意义的，LongWord($133f)=$0000133f，32位无符号整数，仅此而已。

[缘中人]

找到了官方资料 http://docwiki.embarcadero.com/CodeExamples/XE8/en/Set8087CW_%28C%2B%2B%29

Word Saved8087CW;
 
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  Edit3->Text = FloatToStr(StrToFloat(Edit1->Text) / StrToFloat(Edit2->Text));
}
 
void __fastcall TForm1::RadioGroup1Click(TObject *Sender)
{
  if (RadioGroup1->Items->Strings[RadioGroup1->ItemIndex] == "FPU Exceptions")
	System::Set8087CW(Saved8087CW);
  if (RadioGroup1->Items->Strings[RadioGroup1->ItemIndex] == "No FPU Exceptions")
	System::Set8087CW(0x133f); // Disable all fpu exceptions.
}
 
__fastcall TForm1::TForm1(TComponent* Owner)
  : TForm(Owner)
{
  RadioGroup1->Items->Add("No FPU Exceptions");
  RadioGroup1->Items->Add("FPU Exceptions");
  RadioGroup1->ItemIndex = 2;
  Saved8087CW = Default8087CW;  // Save this, because Set8087CW changes it.
}
 
void __fastcall TForm1::FormDestroy(TObject *Sender)
{
  System::Set8087CW(Saved8087CW); // Default value (with exceptions) is 0x1372.
}

[日立奔腾浪潮微软松下联想]

// Default value (with exceptions) is 0x1372.这个注释是错的，默认值是0x1332。 Set8087CW是Delphi RTL函数，C++中最好还是用_control87或者_controlfp。