Remove tm.h and xm.h handling, as it wasn't used. Use nm.h only when needed.
[dragonfly.git] / contrib / nvi / common / util.h
blob46edb4aae5a81503e34972509dc42a6c961fa2d6
1 /*-
2 * Copyright (c) 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
9 * @(#)util.h 10.5 (Berkeley) 3/16/96
12 /* Macros to init/set/clear/test flags. */
13 #define FL_INIT(l, f) (l) = (f) /* Specific flags location. */
14 #define FL_SET(l, f) ((l) |= (f))
15 #define FL_CLR(l, f) ((l) &= ~(f))
16 #define FL_ISSET(l, f) ((l) & (f))
18 #define LF_INIT(f) FL_INIT(flags, f) /* Local variable flags. */
19 #define LF_SET(f) FL_SET(flags, f)
20 #define LF_CLR(f) FL_CLR(flags, f)
21 #define LF_ISSET(f) FL_ISSET(flags, f)
23 #define F_INIT(p, f) FL_INIT((p)->flags, f) /* Structure element flags. */
24 #define F_SET(p, f) FL_SET((p)->flags, f)
25 #define F_CLR(p, f) FL_CLR((p)->flags, f)
26 #define F_ISSET(p, f) FL_ISSET((p)->flags, f)
28 /* Offset to next column of stop size, e.g. tab offsets. */
29 #define COL_OFF(c, stop) ((stop) - ((c) % (stop)))
31 /* Busy message types. */
32 typedef enum { B_NONE, B_OFF, B_READ, B_RECOVER, B_SEARCH, B_WRITE } bmsg_t;
35 * Number handling defines and protoypes.
37 * NNFITS: test for addition of two negative numbers under a limit
38 * NPFITS: test for addition of two positive numbers under a limit
39 * NADD_SLONG: test for addition of two signed longs
40 * NADD_USLONG: test for addition of two unsigned longs
42 enum nresult { NUM_ERR, NUM_OK, NUM_OVER, NUM_UNDER };
43 #define NNFITS(min, cur, add) \
44 (((long)(min)) - (cur) <= (add))
45 #define NPFITS(max, cur, add) \
46 (((unsigned long)(max)) - (cur) >= (add))
47 #define NADD_SLONG(sp, v1, v2) \
48 ((v1) < 0 ? \
49 ((v2) < 0 && \
50 NNFITS(LONG_MIN, (v1), (v2))) ? NUM_UNDER : NUM_OK : \
51 (v1) > 0 ? \
52 (v2) > 0 && \
53 NPFITS(LONG_MAX, (v1), (v2)) ? NUM_OK : NUM_OVER : \
54 NUM_OK)
55 #define NADD_USLONG(sp, v1, v2) \
56 (NPFITS(ULONG_MAX, (v1), (v2)) ? NUM_OK : NUM_OVER)