ipconv.h File Reference

#include <kernel/structs.h>
#include <Singular/table.h>

Go to the source code of this file.

Functions
int	iiTestConvert (int inputType, int outputType, struct sConvertTypes *dCT=dConvertTypes)
BOOLEAN	iiConvert (int inputType, int outputType, int index, leftv input, leftv output, struct sConvertTypes *dCT=dConvertTypes)

Function Documentation

BOOLEAN iiConvert	(	int	inputType,
		int	outputType,
		int	index,
		leftv	input,
		leftv	output,
		struct sConvertTypes *	dCT = dConvertTypes
	)

Definition at line 295 of file ipconv.cc.

{
  memset(output,0,sizeof(sleftv));
  if ((inputType==outputType)
  || (outputType==DEF_CMD)
  || ((outputType==IDHDL)&&(input->rtyp==IDHDL)))
  {
    memcpy(output,input,sizeof(*output));
    memset(input,0,sizeof(*input));
    return FALSE;
  }
  else if (outputType==ANY_TYPE)
  {
    output->rtyp=ANY_TYPE;
    output->data=(char *)(long)input->Typ();
    /* the name of the object:*/
    if (input->e==NULL)
    {
      if (input->rtyp==IDHDL)
      /* preserve name: copy it */
        output->name=omStrDup(IDID((idhdl)(input->data)));
      else if (input->name!=NULL)
      {
        if (input->rtyp==ALIAS_CMD)
        output->name=omStrDup(input->name);
        else
        {
          output->name=input->name;
          input->name=NULL;
        }
      }
      else if ((input->rtyp==POLY_CMD) && (input->name==NULL))
      {
        if (input->data!=NULL)
        {
          int nr=pIsPurePower((poly)input->data);
          if (nr!=0)
          {
            if (pGetExp((poly)input->data,nr)==1)
            {
              output->name=omStrDup(currRing->names[nr-1]);
            }
            else
            {
              char *tmp=(char *)omAlloc(4);
              sprintf(tmp,"%c%d",*(currRing->names[nr-1]),
                (int)pGetExp((poly)input->data,nr));
              output->name=tmp;
            }
          }
          else if(pIsConstant((poly)input->data))
          {
            StringSetS("");
            number n=(pGetCoeff((poly)input->data));
            n_Write(n, currRing->cf);
            (pGetCoeff((poly)input->data))=n;
            output->name=StringEndS();
          }
        }
      }
      else if ((input->rtyp==NUMBER_CMD) && (input->name==NULL))
      {
        StringSetS("");
        number n=(number)input->data;
        n_Write(n, currRing->cf);
        input->data=(void*)n;
        output->name=StringEndS();
      }
      else
      {
        /* no need to preserve name: use it */
        output->name=input->name;
        memset(input,0,sizeof(*input));
      }
    }
    output->next=input->next;
    input->next=NULL;
    return FALSE;
  }
  if (index!=0) /* iiTestConvert does not returned 'failure' */
  {
    index--;

    if((dConvertTypes[index].i_typ==inputType)
    &&(dConvertTypes[index].o_typ==outputType))
    {
      if(traceit&TRACE_CONV)
      {
        Print("automatic  conversion %s -> %s\n",
        Tok2Cmdname(inputType),Tok2Cmdname(outputType));
      }
      if ((currRing==NULL) && (outputType>BEGIN_RING) && (outputType<END_RING))
        return TRUE;
      output->rtyp=outputType;
      if (dConvertTypes[index].p!=NULL)
      {
        output->data=dConvertTypes[index].p(input->CopyD());
      }
      else
      {
        dConvertTypes[index].pl(output,input);
      }
      if ((output->data==NULL)
      && ((outputType!=INT_CMD)
        &&(outputType!=POLY_CMD)
        &&(outputType!=VECTOR_CMD)
        &&(outputType!=NUMBER_CMD)))
      {
        return TRUE;
      }
      output->next=input->next;
      input->next=NULL;
  //if (outputType==MATRIX_CMD) Print("convert %d -> matrix\n",inputType);
      return FALSE;
    }
  }
  return TRUE;
}

int iiTestConvert	(	int	inputType,
		int	outputType,
		struct sConvertTypes *	dCT = dConvertTypes
	)

Definition at line 418 of file ipconv.cc.

{
  if ((inputType==outputType)
  || (outputType==DEF_CMD)
  || (outputType==IDHDL)
  || (outputType==ANY_TYPE))
  {
    return -1;
  }

  if ((currRing==NULL) && (outputType>BEGIN_RING) && (outputType<END_RING))
    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\n",inputType,outputType,
  // Tok2Cmdname(inputType), Tok2Cmdname(outputType));
  return 0;
}