CONTENTS

• NAME
• DESCRIPTION
  • Introduction
  • On The Road
  • The Anatomy of an XSUB
  • The Argument Stack
  • The RETVAL Variable
  • Returning SVs, AVs and HVs through RETVAL
  • The MODULE Keyword
  • The PACKAGE Keyword
  • The PREFIX Keyword
  • The OUTPUT: Keyword
  • The NO_OUTPUT Keyword
  • The CODE: Keyword
  • The INIT: Keyword
  • The NO_INIT Keyword
  • The TYPEMAP: Keyword
  • Initializing Function Parameters
  • Default Parameter Values
  • The PREINIT: Keyword
  • The SCOPE: Keyword
  • The INPUT: Keyword
  • The IN/OUTLIST/IN_OUTLIST/OUT/IN_OUT Keywords
  • The length(NAME) Keyword
  • Variable-length Parameter Lists
  • The C_ARGS: Keyword
  • The PPCODE: Keyword
  • Returning Undef And Empty Lists
  • The REQUIRE: Keyword
  • The CLEANUP: Keyword
  • The POSTCALL: Keyword
  • The BOOT: Keyword
  • The VERSIONCHECK: Keyword
  • The PROTOTYPES: Keyword
  • The PROTOTYPE: Keyword