00001 /********************************************************************* 00002 * Software License Agreement (BSD License) 00003 * 00004 * Copyright (c) 2015-2018, Dataspeed Inc. 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * * Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * * Redistributions in binary form must reproduce the above 00014 * copyright notice, this list of conditions and the following 00015 * disclaimer in the documentation and/or other materials provided 00016 * with the distribution. 00017 * * Neither the name of Dataspeed Inc. nor the names of its 00018 * contributors may be used to endorse or promote products derived 00019 * from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 *********************************************************************/ 00034 00035 #ifndef _DATASPEED_CAN_USB_MODULE_VERSION_H 00036 #define _DATASPEED_CAN_USB_MODULE_VERSION_H 00037 #include <stdint.h> 00038 #include <endian.h> 00039 00040 // Undefine GNU C system macros that we use for other purposes 00041 #ifdef major 00042 #undef major 00043 #endif 00044 #ifdef minor 00045 #undef minor 00046 #endif 00047 00048 namespace dataspeed_can_usb 00049 { 00050 00051 class ModuleVersion { 00052 public: 00053 ModuleVersion() : full(0) {}; 00054 ModuleVersion(uint16_t major, uint16_t minor, uint16_t build) : 00055 #if __BYTE_ORDER == __LITTLE_ENDIAN 00056 build_(build), minor_(minor), major_(major), extra_(0) {}; 00057 #elif __BYTE_ORDER == __BIG_ENDIAN 00058 extra_(0), major_(major), minor_(minor), build_(build) {}; 00059 #endif 00060 bool operator<(const ModuleVersion& other) const { return this->full < other.full; } 00061 bool operator>(const ModuleVersion& other) const { return this->full > other.full; } 00062 bool operator<=(const ModuleVersion& other) const { return this->full <= other.full; } 00063 bool operator>=(const ModuleVersion& other) const { return this->full >= other.full; } 00064 bool operator==(const ModuleVersion& other) const { return this->full == other.full; } 00065 bool operator!=(const ModuleVersion& other) const { return this->full != other.full; } 00066 bool valid() const { return full != 0; } 00067 uint16_t major() const { return major_; } 00068 uint16_t minor() const { return minor_; } 00069 uint16_t build() const { return build_; } 00070 private: 00071 union { 00072 uint64_t full; 00073 struct { 00074 #if __BYTE_ORDER == __LITTLE_ENDIAN 00075 uint16_t build_; uint16_t minor_; uint16_t major_; uint16_t extra_; 00076 #elif __BYTE_ORDER == __BIG_ENDIAN 00077 uint16_t extra_; uint16_t major_; uint16_t minor_; uint16_t build_; 00078 #else 00079 #error Failed to determine system endianness 00080 #endif 00081 }; 00082 }; 00083 }; 00084 00085 } // namespace dataspeed_can_usb 00086 00087 #endif // _DATASPEED_CAN_USB_MODULE_VERSION_H 00088