macros.h

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00001 /*
00002  * Copyright (C) 2005 Jakub Jermar
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00035 #ifndef __MACROS_H__
00036 #define __MACROS_H__
00037 
00038 #define is_digit(d)     (((d) >= '0') && ((d)<='9'))
00039 #define is_lower(c)     (((c) >= 'a') && ((c) <= 'z'))
00040 #define is_upper(c)     (((c) >= 'A') && ((c) <= 'Z'))
00041 #define is_alpha(c)     (is_lower(c) || is_upper(c))
00042 #define is_alphanum(c)  (is_alpha(c) || is_digit(c))
00043 #define is_white(c)     (((c) == ' ') || ((c) == '\t') || ((c) == '\n') || ((c) == '\r'))
00044 
00045 #define min(a,b)        ((a)<(b)?(a):(b))
00046 #define max(a,b)        ((a)>(b)?(a):(b))
00047 
00049 static inline int overlaps(__address s1, size_t sz1, __address s2, size_t sz2)
00050 {
00051         __address e1 = s1+sz1;
00052         __address e2 = s2+sz2;
00053 
00054         return s1 < e2 && s2 < e1;
00055 }
00056 /* Compute overlapping of physical addresses */
00057 #define PA_overlaps(x,szx,y,szy)  overlaps(KA2PA(x),szx,KA2PA(y), szy)
00058 
00059 #endif
00060 

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