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## listpack.md

      
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                antirez
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    Listpack specification

Version 1.0, 1 Feb 2017: Intial specification.

Version 1.1, 2 Feb 2017: Integer encoding simplified. Appendix A added.

Version 1.2, 3 Feb 2017: Better specify the meaning of the num-elements
                         field with value of 65535. The two 12 bits

positive/negative integers encodings were

  
## apue.h
/* Our own header, to be included before all standard system headers */

#ifndef _APUE_H
#define _APUE_H

#if defined(SOLARIS)
#define _XOPEN_SOURCE 500 /* Single UNIX Specification, Version 2 for Solaris 9 */
#define CMSG_LEN(x) _CMSG_DATA_ALIGN(sizeof(struct cmsghdr)+(x))
#elif !defined(BSD)
#define _XOPEN_SOURCE 600 /* Single UNIX Specification, Version 3 */
	/* Our own header, to be included before all standard system headers */

	#ifndef _APUE_H
	#define _APUE_H

	#if defined(SOLARIS)
	#define _XOPEN_SOURCE 500 /* Single UNIX Specification, Version 2 for Solaris 9 */
	#define CMSG_LEN(x) _CMSG_DATA_ALIGN(sizeof(struct cmsghdr)+(x))
	#elif !defined(BSD)
	#define _XOPEN_SOURCE 600 /* Single UNIX Specification, Version 3 */