#include <unistd.h>
   #ifndef S4NO_ECVT
      char *ecvt( double, int, int*, int* ) ;
   #endif
   #ifndef S4NO_FCVT
      char *fcvt( double, int, int*, int* ) ;
   #endif
#endif

   #define  S4CMP_PARM  const void *

   #ifndef USHRT_MAX
      #define USHRT_MAX      0xFFFF
   #endif
   #ifndef INT_MAX
      #define INT_MAX        0x7FFF
   #endif
   #ifndef UINT_MAX
      #define UINT_MAX       0xFFFF
   #endif
   #ifndef LONG_MAX
      #define LONG_MAX       2147483647
   #endif

#ifdef S4LOCKF
   #define S4LOCKING
#endif

#ifdef S4MULTIC4
   #include <sys/wait.h>
#endif

#ifndef S4NO_FLOCK
   #include <sys/file.h>
#endif

#ifdef S4NO_SIZE_T
   typedef unsigned size_t ;
#endif

#ifdef __cplusplus
   extern "C"   {
#endif

#ifdef S4NO_STRNICMP
   int strnicmp(char *, char *, size_t ) ;
#endif

#ifdef S4NO_MEMMOVE
   void *c4memmove(void *, const void *, size_t) ;
#endif

#ifdef S4LSEEK
   #define S4OFF_OPTIMIZE
   long f4lseek(FILE4 *, long, int, int ) ;
#endif

#ifdef S4NO_FCVT
   char *f4fcvt( double, int, int *, int * ) ;
#endif

#ifdef S4NO_ECVT
   char *f4ecvt( double, int, int *, int * ) ;
#endif

#ifdef S4NO_ATOF
   double c4atof(char *) ;
#endif

#ifdef __cplusplus
   }
#endif

#ifdef S4BYTEORDER_3210
   #define S4DO_BYTEORDER
#endif

#ifdef S4BYTEORDER_2301
   #define S4DO_BYTEORDER
#endif