/*
	defs.h -- all-purpose definitions
*/

/*  inclusions/constants for portability  */
#if __GNUC__
#define ANSI 1
#else
#define ANSI 0
#define SUN 1
#define OLD_NEWS 0
#define FACOM 0
#define MSC 0
#endif

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#if ANSI || SUN
#include <stdlib.h>
#endif

/*  Byte order-related macros  */
#ifdef __BYTE_ORDER
/*  In GCC on Linux, both BIG_ENDIAN and LITTLE_ENDIAN are defined 
    as non-zero  */
#undef LITTLE_ENDIAN
#undef BIG_ENDIAN
#endif
#ifndef LITTLE_ENDIAN
#if MSC || __i386__
#define LITTLE_ENDIAN 1
#else
#define LITTLE_ENDIAN 0
#endif
#define BIG_ENDIAN !LITTLE_ENDIAN
#endif

#if OLD_NEWS 		/*  Broken tolower/toupper macros  */
#undef toupper             
#define toupper(c) (islower(c) ? (c)-('a'-'A') : (c))
#undef tolower
#define tolower(c) (isupper(c) ? (c)+('a'-'A') : (c))
#endif

#if OLD_NEWS		/*  strchr() not included in standard library  */
#define NO_strchr 1
#endif

#if OLD_NEWS || (SUN && !__GNUC__)	
/*  Function to delete a file is named unlink()  */
#define remove unlink
#endif

#if FACOM		/*  No function to delete a file available at all!  */
#define remove(x)
#endif

#if SUN
long strtol();
time_t time();
#endif

#ifndef MAXINT
/*  Should be greater than number of entries in database  */
#define MAXINT 999999   
#endif

#ifndef SEEK_SET
#define SEEK_SET 0
#endif

/*  General-purpose constants  */
#define YES		1			/*  Boolean constant  */
#define NO		0			/*  ..  */
#define OK		0			/*  Function return status  */
#define ERROR 	(-1)		/*  .. */
#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS 0		/*  Program return status  */
#define EXIT_FAILURE 1		/*  ..  */
#endif
#define NULL_CP	(char *)0	/*  Null character pointer  */

/*  Function-like macros  */
#ifndef min
#define min(x,y)		((x)<(y)?(x):(y))
#define max(x,y)		((x)>(y)?(x):(y))
#endif
/*  Test for equality of strings (slightly fast)  */
#define streq(x,y)		(*(x)==*(y) && !strcmp((x),(y)))
/*  End of a string  */
#define strtail(x)		strchr((x),0)
/*  Like strncpy(), but without padding/omission of null  */
#define strn_cpy(x,y,n)	(*(x)=0, strncat(x,y,n))
/*  fputs to stdout  */
#define put_s(m)		fputs((m),stdout)
/*  fputs to stderr  */
#define errmsg(m)		fputs((m),stderr)
/*  Advance pointer to non-blank character  */
#define skipspace(p)	while(isspace(*p)) p++
/*  Advance pointer to blank character  */
#define skipnspace(p)	while(*p && !isspace(*p)) p++

/*  ----- end of defs.h -----  */