00001 /* ---------------------------------------------------------------------------- */ 00002 /* Atmel Microcontroller Software Support */ 00003 /* SAM Software Package License */ 00004 /* ---------------------------------------------------------------------------- */ 00005 /* Copyright (c) 2015, Atmel Corporation */ 00006 /* */ 00007 /* All rights reserved. */ 00008 /* */ 00009 /* Redistribution and use in source and binary forms, with or without */ 00010 /* modification, are permitted provided that the following condition is met: */ 00011 /* */ 00012 /* - Redistributions of source code must retain the above copyright notice, */ 00013 /* this list of conditions and the disclaimer below. */ 00014 /* */ 00015 /* Atmel's name may not be used to endorse or promote products derived from */ 00016 /* this software without specific prior written permission. */ 00017 /* */ 00018 /* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ 00019 /* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ 00020 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ 00021 /* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */ 00022 /* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ 00023 /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */ 00024 /* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */ 00025 /* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */ 00026 /* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ 00027 /* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 00028 /* ---------------------------------------------------------------------------- */ 00029 00030 /*------------------------------------------------------------------------------ 00031 * Headers 00032 *----------------------------------------------------------------------------*/ 00033 00034 #include "board.h" 00035 00036 /*------------------------------------------------------------------------------ 00037 * Exported functions 00038 *----------------------------------------------------------------------------*/ 00039 00040 /** 00041 * Returns the minimum value between two integers. 00042 * 00043 * \param a First integer to compare. 00044 * \param b Second integer to compare. 00045 */ 00046 extern uint32_t min(uint32_t dwA, uint32_t dwB) 00047 { 00048 if (dwA < dwB) 00049 return dwA; 00050 else 00051 return dwB; 00052 } 00053 00054 /*------------------------------------------------------------------------------ 00055 * Returns the absolute value of an integer. 00056 * 00057 * \param value Integer value. 00058 * 00059 * \note Do not call this function "abs", problem with gcc ! 00060 */ 00061 extern uint32_t absv(int32_t lValue) 00062 { 00063 if (lValue < 0) 00064 return -lValue; 00065 else 00066 return lValue; 00067 } 00068 00069 /*------------------------------------------------------------------------------ 00070 * Computes and returns x power of y. 00071 * 00072 * \param x Value. 00073 * \param y Power. 00074 */ 00075 extern uint32_t power(uint32_t dwX, uint32_t dwY) 00076 { 00077 uint32_t dwResult = 1; 00078 00079 while (dwY > 0) { 00080 dwResult *= dwX; 00081 dwY--; 00082 } 00083 00084 return dwResult; 00085 } 00086