jzmaddock
commented
2 years ago I tried this with C++ Builder 10.4 update 2, and the latest Boost-1.80, and other than a warning about the compiler version being unknown, everything worked just fine in both 32 and 64 bit builds.
To test, I created a new GUI project using the default template, and just added your code to the form constructor, so the unit looks like:
#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
#include <boost/multiprecision/cpp_int.hpp>
#include <boost/multiprecision/cpp_bin_float.hpp>
#include <boost/rational.hpp>
using namespace std;
using namespace boost::multiprecision;
using boost::rational;
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
typedef boost::rational<cpp_int> t_prob;
t_prob a,b,c;
a = 4;
a /= 6;
b = 13;
b /= 7;
c = a * b;
}What were the errors that you saw?
davidlewistoronto
C++ builder community edition is 10.4 and can include boost 1.70. 32b compiles of multiprecision work but 64b do not. Example with some usual #includes not included. Perhaps 1.70 is obsolete but this is the only version that is available to C++ builder community edition. If any fix is known, such as compiling boost for C++ builder it would be appreciated. Link errors are:
[ilink64 Error] Error: Unresolved external 'udivti3' referenced from C:\USERS\DAVID\LOCAL_DEVEL\BOOST_TEST\WIN64\DEBUG\FILE1.O [ilink64 Error] Error: Unresolved external 'umodti3' referenced from C:\USERS\DAVID\LOCAL_DEVEL\BOOST_TEST\WIN64\DEBUG\FILE1.O