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C/C++ Source or Header  |  1994-07-03  |  226b  |  13 lines
  1. #include "membook.h"
  2.  
  3. long msize(void *addr)
  4. {
  5.   register struct mem_chunk *r = (struct mem_chunk *)addr;
  6.  
  7.   r--;
  8.   if (r->valid != VAL_ALLOC)
  9.     return -1;
  10.   else
  11.     return r->size - sizeof(struct mem_chunk);
  12. }
  13.