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cocos2d-x/cocos/base/ccUtils.h

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+/****************************************************************************
+Copyright (c) 2010      cocos2d-x.org
+Copyright (c) 2013-2016 Chukong Technologies Inc.
+Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
+
+http://www.cocos2d-x.org
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+****************************************************************************/
+#pragma once
+
+#include <vector>
+#include <string>
+#include "base/ccMacros.h"
+
+/** @file ccUtils.h
+Misc free functions
+*/
+
+NS_CC_BEGIN
+
+namespace
+{
+#if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32)
+#include <winsock.h>
+    extern "C" int gettimeofday(struct timeval * val, void *);
+#endif
+}
+/*
+utils::nextPOT function is licensed under the same license that is used in Texture2D.m.
+*/
+
+/** Returns the Next Power of Two value.
+
+Examples:
+- If "value" is 15, it will return 16.
+- If "value" is 16, it will return 16.
+- If "value" is 17, it will return 32.
+@param value The value to get next power of two.
+@return Returns the next power of two value.
+@since v0.99.5
+*/
+
+namespace utils
+{
+    CC_DLL int nextPOT(int x);
+    /** Same to ::atof, but strip the string, remain 7 numbers after '.' before call atof.
+     * Why we need this? Because in android c++_static, atof ( and std::atof ) is unsupported for numbers have long decimal part and contain
+     * several numbers can approximate to 1 ( like 90.099998474121094 ), it will return inf. This function is used to fix this bug.
+     * @param str The string be to converted to double.
+     * @return Returns converted value of a string.
+     */
+    CC_DLL double  atof(const char* str);
+
+    /** Get current exact time, accurate to nanoseconds.
+     * @return Returns the time in seconds since the Epoch.
+     */
+    CC_DLL double  gettime();
+
+    /**
+     * Get current time in milliseconds, accurate to nanoseconds
+     *
+     * @return  Returns the time in milliseconds since the Epoch.
+     */
+    CC_DLL long long  getTimeInMilliseconds();
+}
+
+NS_CC_END
+