Size of integers in CPLEX

Question

I tried searching quite a bit but could not find the answer. What is the size of integer variables in CPLEX? Is it 64-bit or is it arbitrary precision based on the bounds?

@Tryer I work in python and python has arbitrary precision integers. But yeah, I should've looked at the APIs of other languages. That should've cleared it. — Samvid Mistry, Nov 20 '20 at 07:56

score 1 · Accepted Answer · edited Nov 20 '20 at 23:54

1

public  IloIntVar(IloEnv env, IloInt vmin=0, IloInt vmax=IloIntMax, const char * name=0)

The Max Value of an integer decision variable is IloIntMax

PS:

dvar int x;

subject to
{
  
}

execute
{
  writeln(x.UB);
}

gives the exact value

2147483647

edited Nov 20 '20 at 23:54

halfer

19,824
17
99
186

answered Nov 19 '20 at 06:14

Alex Fleischer

9,276
2
12
15

This is not what is asked by the OP. The question is, what would sizeof(IloInt) return? – Tryer Nov 19 '20 at 06:40

score 0 · Answer 2 · answered Jan 10 '22 at 02:35

code in in concert/include/ilconcert/ilosys.h

typedef __int64 IloInt;
typedef unsigned __int64 IloUInt;
typedef long IloInt;
typedef unsigned long IloUInt;
typedef double IloNum;
typedef float IloShortNum;
typedef IloInt IloBool;
typedef void* ILO_MAY_ALIAS IloAny;
typedef IloNum (*IloNumFunction)(IloNum);

IloNum is double

IloBool/IloInt both are long

Size of integers in CPLEX

2 Answers2