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      1 /* $NetBSD: defs.h,v 1.7 2011/08/31 16:25:00 plunky Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1999 Alistair G. Crooks.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote
     15  *    products derived from this software without specific prior written
     16  *    permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     19  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     24  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     26  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     27  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 #ifndef DEFS_H_
     31 #define DEFS_H_
     32 
     33 #define NEWARRAY(type,ptr,size,action) do {				\
     34 	if ((ptr = (type *) calloc(sizeof(type), size)) == NULL) { 	\
     35 		warn("can't allocate %ld bytes", (long)(size * sizeof(type))); \
     36 		action;							\
     37 	}								\
     38 } while( /* CONSTCOND */ 0)
     39 
     40 #define RENEW(type,ptr,size,action) do {				\
     41 	if ((ptr = (type *) realloc(ptr, sizeof(type) * size)) == NULL) { \
     42 		warn("can't realloc %ld bytes", (long)(size * sizeof(type))); \
     43 		action;							\
     44 	}								\
     45 } while( /* CONSTCOND */ 0)
     46 
     47 #define NEW(type, ptr, action)	NEWARRAY(type, ptr, 1, action)
     48 
     49 #define FREE(ptr)	(void) free(ptr)
     50 
     51 #ifndef MIN
     52 #define MIN(a,b)	(((a) < (b)) ? (a) : (b))
     53 #endif
     54 
     55 #ifndef MAX
     56 #define MAX(a,b)	(((a) > (b)) ? (a) : (b))
     57 #endif
     58 
     59 #endif /* !DEFS_H_ */
     60