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/*

 * Copyright (c) 2005 Jakub Jermar

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/** @addtogroup generic	

 * @{

 */

/** @file

 */

#ifndef KERN_MACROS_H_

#define KERN_MACROS_H_

#include <arch/types.h>

#define is_digit(d)	(((d) >= '0') && ((d) <= '9'))

#define is_lower(c)	(((c) >= 'a') && ((c) <= 'z'))

#define is_upper(c)	(((c) >= 'A') && ((c) <= 'Z'))

#define is_alpha(c)	(is_lower(c) || is_upper(c))

#define is_alphanum(c)	(is_alpha(c) || is_digit(c))

#define is_white(c)	(((c) == ' ') || ((c) == '\t') || ((c) == '\n') || \

				((c) == '\r'))

#define min(a,b)	((a) < (b) ? (a) : (b))

#define max(a,b)	((a) > (b) ? (a) : (b))

/** Return true if the interlvals overlap.

 *

 * @param s1 Start address of the first interval.

 * @param sz1 Size of the first interval.

 * @param s2 Start address of the second interval.

 * @param sz2 Size of the second interval.

 */

static inline int overlaps(uintptr_t s1, size_t sz1, uintptr_t s2, size_t sz2)

{

	uintptr_t e1 = s1 + sz1;

	uintptr_t e2 = s2 + sz2;

	return (s1 < e2) && (s2 < e1);

}

/* Compute overlapping of physical addresses */

#define PA_overlaps(x, szx, y, szy)	overlaps(KA2PA(x), szx, KA2PA(y), szy)

#define STRING(arg) STRING_ARG(arg)

#define STRING_ARG(arg) #arg

#endif

/** @}

 */