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- /*
- ** USEFUL.H -- useful stuff.
- **
- ** Version:
- ** @(#)useful.h 8.7 5/30/88
- */
-
- # ifndef TRUE
- # define TRUE 1 /* logical one, true, yes, ok, etc.*/
- # define FALSE 0 /* logical zero, false, no, nop, etc. */
-
- typedef char bool; /* the boolean type */
- # endif TRUE
-
- # ifndef NULL
- # define NULL 0 /* the null pointer */
- # endif NULL
-
- # ifndef bitset
- # define bitset(bit, word) ((bit) & (word))
- # define setbit(bit, word) word |= bit
- # define clrbit(bit, word) word &= ~bit
- # endif bitset
-
- # ifndef min
- # define min(a, b) (((a) < (b))? (a): (b))
- # define max(a, b) (((a) > (b))? (a): (b))
- # endif min
-
- # ifndef RELINFO
- /* macros for the HELP function */
- # define RELINFO 0 /* info about a relation */
- # define MANSEC 1 /* manual section */
- # define DELLIST 2 /* list of delimitors */
- # define RELIST 3 /* list of relations */
- # define ALLRELINFO 4 /* info about all relations */
- # define ALLDELLIST 5 /* list of all delimitors */
- # endif RELINFO
-
- /* The following are BNF grammar delimiter types used by parser/tree.c */
- # define ONE 0
- # define ZEROMORE 1
- # define LBRACKET '['
- # define RBRACKET ']'
- # define LBRACE '{'
- # define RBRACE '}'
-
- /*
- ** Various manifest constants storage constants.
- */
- # define MAXF4 2147483647.0
- # define MINF4 -2147483648.0
-
- # define MAXI2 127
- # define MINI2 -128
-
- # define MAXI4 32767
- # define MINI4 -32768
-
- # define MAXI8 2147483647
- # define MINI8 -2147483648
-
-
- # define I1MASK 0377 /* mask out sign extension that occurs
- ** when a c1 or i1 field is converted
- ** to an i2 field.
- */
-
- # include <fcntl.h> /* for O_* */
-
- /* modes for dest_const in dbu/rmqm.c */
- # define DESTPROT 5 /* destroy permission */
- # define DESTINTEG 6 /* destroy integrity constraint */
-
- /* modes for the return values of replace() in iutil/replace.c */
- # define NEWTUP 0
- # define DUPTUP 1 /* new tuple duplicate of returned tid*/
- # define DELTUP 2 /* tuple identified by tid deleted */
- # define BADLID 3
-
- /* macro for gutil/cat.c */
- # define BLOCK_SZ 512
-
- /* macros for return codes of initucode and initdbpath */
- # define NODB 1
- # define NOACCESS 2
- # define INVALIDUSR 3
- # define NODBNAME 4
- # define INDIRECT 5
- # define INDNODB 6
-
- # define DBEXIST 0
- # define PTR2DB 1
- # define NODBS 2
- # define PTR2NODBS 3
-
- /* macros for bitmap in dbu/pr_prot.c */
- # define BITMAP_SZ 4
- # define NUMSHIFTS 32
-
- /* macros for conversion routines in gutil */
- # define CONCAT_BUFSZ 101 /* buffer for string concats */
- # define LONG_BUFSZ 30 /* buffer for long conversion*/
- # define CHAR_SZ 7 /* buffer for int to ascii conversion */
-