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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - 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.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef __MACROS_H__
  30. #define __MACROS_H__
  31.  
  32. #define is_digit(d) (((d) >= '0') && ((d)<='9'))
  33. #define is_lower(c) (((c) >= 'a') && ((c) <= 'z'))
  34. #define is_upper(c) (((c) >= 'A') && ((c) <= 'Z'))
  35. #define is_alpha(c) (is_lower(c) || is_upper(c))
  36. #define is_alphanum(c)  (is_alpha(c) || is_digit(c))
  37. #define is_white(c) (((c) == ' ') || ((c) == '\t') || ((c) == '\n') || ((c) == '\r'))
  38.  
  39. #define min(a,b)    ((a)<(b)?(a):(b))
  40. #define max(a,b)    ((a)>(b)?(a):(b))
  41.  
  42. /* Return true if the interlvals overlap */
  43. static inline int overlaps(__address s1,size_t sz1, __address s2, size_t sz2)
  44. {
  45.     __address e1 = s1+sz1;
  46.     __address e2 = s2+sz2;
  47.  
  48.     return s1 < e2 && s2 < e1;
  49. }
  50. /* Compute overlapping of physical addresses */
  51. #define PA_overlaps(x,szx,y,szy)  overlaps(KA2PA(x),szx,KA2PA(y), szy)
  52.  
  53. #endif
  54.