Intermec 5055 Reference Guide

This function allocates a memory block larger than 64K.

#include "im5055.h"
void far *im_fmalloc
    (IM_ULONG 

lsize

)

lsize    Size of memory in bytes to allocate.

None.

This function returns one of these values:

Far void pointer    Allocation was successful. The pointer indicates the allocated space.

NULL    Not enough available free memory to allocate.

The system uses 16 bytes of overhead. If you want to allocate the largest free memory
block available, specify lsize as 16 bytes less than the available memory block size.

/* Example of doing a set/get relay digital I/O */
#include <string.h>
#include "im5055.h"
#include <conio.h>
#include <stdlib.h>
void main (void)
{
IM_ULONG lsize;
IM_ULONG ltotal;
char *pz1;
char c;
/* Inquire about system memory */
im_free_mem(&lsize, &ltotal);
printf("Largest size: %ld\nTotalsize:%ld\n", lsize, ltotal);
/* Allocate the largest block, it must be 16 bytes less than block size */
pz1 = im_fmalloc(lsize – 16L);
if (pz1 == NULL)
{
im_cputs("Fails to allocate memory\n", IM_NORMAL);
}
else
{
free(pz1);
}
c = getch();