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517 jermar 1 
/*
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 * Copyright (c) 2005 Jakub Jermar
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 * 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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 *
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 * - 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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 * - 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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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup generic
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 * @{
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 */
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/** @file
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 */
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#ifndef KERN_MACROS_H_
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#define KERN_MACROS_H_
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#include <arch/types.h>
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#include <typedefs.h>
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#define is_digit(d) (((d) >= '0') && ((d) <= '9'))
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#define is_lower(c) (((c) >= 'a') && ((c) <= 'z'))
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#define is_upper(c) (((c) >= 'A') && ((c) <= 'Z'))
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#define is_alpha(c) (is_lower(c) || is_upper(c))
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#define is_alphanum(c)  (is_alpha(c) || is_digit(c))
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#define is_white(c) (((c) == ' ') || ((c) == '\t') || ((c) == '\n') || \
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                ((c) == '\r'))
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#define min(a,b)    ((a) < (b) ? (a) : (b))
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#define max(a,b)    ((a) > (b) ? (a) : (b))
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/** Return true if the interlvals overlap.
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 *
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 * @param s1 Start address of the first interval.
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 * @param sz1 Size of the first interval.
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 * @param s2 Start address of the second interval.
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 * @param sz2 Size of the second interval.
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 */
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static inline int overlaps(uintptr_t s1, size_t sz1, uintptr_t s2, size_t sz2)
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{
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    uintptr_t e1 = s1 + sz1;
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    uintptr_t e2 = s2 + sz2;
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    return (s1 < e2) && (s2 < e1);
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}
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/* Compute overlapping of physical addresses */
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#define PA_overlaps(x, szx, y, szy) overlaps(KA2PA(x), szx, KA2PA(y), szy)
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#define STRING(arg) STRING_ARG(arg)
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#define STRING_ARG(arg) #arg
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#endif
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/** @}
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 */