Function iiTestConvert

Singular/ipconv.cc:597–629

2 * try to convert 'inputType' in 'outputType' * return 0 on failure, an index (<>0) on success */

* return 0 on failure, an index (<>0) on success
*/
int iiTestConvert (int inputType, int outputType,const struct sConvertTypes *dConvertTypes)
{
  if ((inputType==outputType)
  || (outputType==DEF_CMD)
  || (outputType==IDHDL)
  || (outputType==ANY_TYPE))
  {
    return -1;
  }
  if (inputType==UNKNOWN) return 0;

  if ((currRing==NULL) && (outputType>BEGIN_RING) && (outputType<END_RING))
    return 0;
  //if ((currRing==NULL) && (outputType==CNUMBER_CMD))
  //  return 0;

  // search the list
  int i=0;
  while (dConvertTypes[i].i_typ!=0)
  {
    if((dConvertTypes[i].i_typ==inputType)
    &&(dConvertTypes[i].o_typ==outputType))
    {
      //Print("test convert %d to %d (%s -> %s):%d\n",inputType,outputType,
      //Tok2Cmdname(inputType), Tok2Cmdname(outputType),i+1);
      return i+1;
    }
    i++;
  }
  //Print("test convert %d to %d (%s -> %s):0, tested:%d\n",inputType,outputType,
  // Tok2Cmdname(inputType), Tok2Cmdname(outputType),i);
  return 0;
}