abs.c 3.7 KB

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  1. /*
  2. * Copyright (C) 2004 by egnite Software GmbH. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. *
  8. * 1. Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * 2. Redistributions in binary form must reproduce the above copyright
  11. * notice, this list of conditions and the following disclaimer in the
  12. * documentation and/or other materials provided with the distribution.
  13. * 3. Neither the name of the copyright holders nor the names of
  14. * contributors may be used to endorse or promote products derived
  15. * from this software without specific prior written permission.
  16. *
  17. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18. * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20. * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21. * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  22. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  23. * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  24. * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25. * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  26. * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  27. * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28. * SUCH DAMAGE.
  29. *
  30. * For additional information see http://www.ethernut.de/
  31. *
  32. *-
  33. * Copyright (c) 1990 The Regents of the University of California.
  34. * All rights reserved.
  35. *
  36. * Redistribution and use in source and binary forms, with or without
  37. * modification, are permitted provided that the following conditions
  38. * are met:
  39. * 1. Redistributions of source code must retain the above copyright
  40. * notice, this list of conditions and the following disclaimer.
  41. * 2. Redistributions in binary form must reproduce the above copyright
  42. * notice, this list of conditions and the following disclaimer in the
  43. * documentation and/or other materials provided with the distribution.
  44. * 3. Neither the name of the University nor the names of its contributors
  45. * may be used to endorse or promote products derived from this software
  46. * without specific prior written permission.
  47. *
  48. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58. * SUCH DAMAGE.
  59. */
  60. /*
  61. * $Log$
  62. * Revision 1.3 2007/08/29 07:43:53 haraldkipp
  63. * Documentation updated and corrected.
  64. *
  65. * Revision 1.2 2005/08/02 17:46:47 haraldkipp
  66. * Major API documentation update.
  67. *
  68. * Revision 1.1 2004/09/08 10:23:26 haraldkipp
  69. * Generic C stdlib added
  70. *
  71. */
  72. #include <stdlib.h>
  73. /*!
  74. * \addtogroup xgCrtStdLib
  75. */
  76. /*@{*/
  77. /*!
  78. * \brief Compute absolute value of an integer.
  79. *
  80. *
  81. * \param j The integer value.
  82. *
  83. * \return The absolute value.
  84. */
  85. int abs(int j)
  86. {
  87. return (j < 0 ? -j : j);
  88. }
  89. /*@}*/