alloc.cpp

模拟cmmb系统中ldpc译码的部分

/* ALLOC.C - Routine to allocate memory and complain if it doesn't work. */

/* Copyright (c) 1996 by Radford M. Neal 
 *
 * Permission is granted for anyone to copy, use, modify, or distribute this
 * program and accompanying programs and documents for any purpose, provided 
 * this copyright notice is retained and prominently displayed, along with
 * a note saying that the original programs are available from Radford Neal's
 * web page, and note is made of any changes made to the programs.  The
 * programs and documents are distributed without any warranty, express or
 * implied.  As the programs were written for research purposes only, they have
 * not been tested to the degree that would be advisable in any important
 * application.  All use of these programs is entirely at the user's own risk.
 */

#include <stdlib.h>
#include <stdio.h>

#include "alloc.h"


/* ALLOCATE SPACE AND CHECK FOR ERROR.  Calls 'calloc' to allocate space,
   and then displays an error message and exits if the space couldn't be
   found. */

void *chk_alloc
( unsigned n,		/* Number of elements */
  unsigned size		/* Size of each element */
)
{ 
  void *p;

  p = calloc(n,size);

  if (p==0)
  { fprintf(stderr,"Ran out of memory (while trying to allocate %d bytes)\n",
      n*size);
    exit(1);
  }

  return p;
}