90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
/* $NetBSD: defs.h,v 1.1 2002/01/09 16:17:08 agc Exp $ */
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/*
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* Copyright (c) 1999-2000 Alistair G. Crooks. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Alistair G. Crooks.
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* 4. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef DEFS_H_
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#define DEFS_H_
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#include <err.h>
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#include <stdlib.h>
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#include <string.h>
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#define NEWARRAY(type,ptr,size,where,action) do { \
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if ((ptr = (type *) calloc(sizeof(type), (unsigned)(size))) == NULL) { \
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warn("%s: can't allocate %lu bytes", where, \
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(unsigned long)(size * sizeof(type))); \
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action; \
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} \
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} while( /* CONSTCOND */ 0)
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#define RENEW(type,ptr,size,where,action) do { \
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type *newptr; \
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if ((newptr = (type *) realloc(ptr, sizeof(type) * (size))) == NULL) { \
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warn("%s: can't realloc %lu bytes", where, \
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(unsigned long)(size * sizeof(type))); \
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action; \
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} \
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ptr = newptr; \
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} while( /* CONSTCOND */ 0)
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#define NEW(type, ptr, where, action) NEWARRAY(type, ptr, 1, where, action)
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#define FREE(ptr) (void) free(ptr)
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#define ALLOC(type, v, size, c, init, where, action) do { \
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if (size == 0) { \
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size = init; \
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NEWARRAY(type, v, size, where ": new", action); \
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} else if (c == size) { \
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size *= 2; \
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RENEW(type, v, size, where ": renew", action); \
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} \
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} while( /* CONSTCOND */ 0)
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#ifndef MIN
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#define MIN(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a,b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef ABS
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#define ABS(a) (((a) < 0) ? -(a) : (a))
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#endif
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#define STRNCPY(to, from, size) do { \
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(void) strncpy(to, from, size); \
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to[(size) - 1] = 0; \
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} while( /* CONSTCOND */ 0)
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#endif /* !DEFS_H_ */
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