#include <lnv3/lnv3.h>


#include "validate.h"
#include "funcList.h"


bool
ValidateSubtract( const string& operation )
{
    if( operation != "subtract" ) return false;

    ln a, b, c, d;
    cin >> a >> b >> c;

    d = a - b;
    CheckForError( d, c, "operator-( ln )" );

    d = a;
    d -= b;
    CheckForError( d, c, "operator-=( ln )" );

#ifdef UNDER_CONSTRUCTION
    if( b.GetSize( ) == 1 )
    {
        ddigit_t bb = b.GetDigit( 0 );
        d = a - bb;
        CheckForError( d, c, "operator+( scalar )" );

        d = a;
        d += bb;
        CheckForError( d, c, "operator+=( scalar )" );
    }
#endif

    return true;
}


static TestFunctionList RegFunc( ValidateSubtract );