/* allocate dynamic memory large enough to hold in-file and app cells
* Rmalloc allocates memory to hold nrOfCells
* cells in both the in-file and app cell representation. Allocation
* is done by malloc for other users. Our own (utrecht university) applications
* calls ChkMalloc. Freeing memory allocated by Rmalloc is done by free (or Free).
*
* NOTE
* Note that a possible RuseAs call must be done BEFORE Rmalloc.
*
* returns
* a pointer the allocated memory or
* NULL
* if the request fails
*
* example
* .so examples/_row.tr
*/
void *Rmalloc(
const MAP *m, /* map handle */
size_t nrOfCells) /* number of cells allocated memory must hold */
{
CSF_CR inFileCR = RgetCellRepr(m);
CSF_CR largestCellRepr =
LOG_CELLSIZE(m->appCR) > LOG_CELLSIZE(inFileCR)
? m->appCR : inFileCR;
return CSF_MALLOC((size_t)CSFSIZEOF(nrOfCells, largestCellRepr));
}
/* set an array of cells to missing value
* SetMemMV sets an array of cells to missing value
*/
void SetMemMV(
void *buf, /* write-only buffer with cells */
size_t nrElements, /* number of cells */
CSF_CR cellRepr) /* cell representation */
{
size_t index;
switch (cellRepr) {
case CR_INT1:
(void)memset(buf,MV_INT1,nrElements);
break;
case CR_INT2:
for (index=0; index<nrElements; index++)
((INT2 *) buf)[index]=MV_INT2;
break;
case CR_INT4:
for (index=0; index<nrElements; index++)
((INT4 *) buf)[index]=MV_INT4;
break;
default:
(void)memset(buf,MV_UINT1,CSFSIZEOF(nrElements,cellRepr));
}
}
