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AnsiString we = "123456.1234";
AnsiString wr = "1.123";
we = we-wr;
ShowMessage(we); //123455.0004
AnsiString we = "123456789123456.1234";
AnsiString wr = "1.123";
we = we-wr;
ShowMessage(we); // 123456789123455
double c = 123456789123456.1234;
double d = 123456789012345.0123;
ShowMessage(c); // 123456789123456
ShowMessage(c-d); // 111111.109375..
AnsiString c = "123456789123456.1234";
AnsiString d = "123456789012345.0123";
double ce = StrToFloat(c);
double de = StrToFloat(d);
ShowMessage(c); // 123456789123456.1234
ShowMessage(c-d); // 111111.109375 ..
ShowMessage(ce); // 123456789123456
ShowMessage(de); // 123456789012345
ShowMessage(ce-de);// 111111.109375