The ability to write efficient, high-speed arithmetic routines ultimately depends upon your knowledge of the elements of arithmetic as they exist on a computer. That conclusion and this book are the result of a long and frustrating search for information on writing arithmetic routines for real-time embedded systems. With instruction cycle times coming down and clock rates going up, it would seem that speed is not a problem in writing fast routines. In addition, math coprocessors are becoming more popular and less expensive than ever before and are readily available. These factors make arithmetic easier and faster to use and implement. However, for many of you the systems that you are working on do not include the latest chips or the faster processors. Some of the most widely used microcontrollers used today are not Digital Signal Processors (DSP), but simple eight-bit controllers such as the Intel 8051 or 8048 microprocessors.
標(biāo)簽： arithmetic high-speed ultimately efficient
上傳時(shí)間： 2014-11-30
上傳用戶：lizhen9880
B-spline曲線是包含Bezier曲線的通用數(shù)學(xué)表示法。
上傳時(shí)間： 2015-11-22
上傳用戶：whenfly
About: hamsterdb is a database engine written in ANSI C. It supports a B+Tree index structure, uses memory mapped I/O (if available), supports cursors, and can create in-memory databases. Release focus: Major feature enhancements Changes: This release comes with many changes and new features. It can manage multiple databases in one file. A new flag (HAM_LOCK_EXCLUSIVE) places an exclusive lock on the file. hamsterdb was ported to Windows CE, and the Solution file for Visual Studio 2005 now supports builds for x64. Several minor bugs were fixed, performance was improved, and small API changes occurred. Pre-built libraries for Windows (32-bit and 64-bit) are available for download. Author: cruppstahl
標(biāo)簽： C. hamsterdb structure database
上傳時(shí)間： 2013-12-11
上傳用戶：LouieWu
文法如下: (1)S->aAcBe (2)A->b (3)A->Ab (4)B->d 關(guān)於lr0的語法分析
上傳時(shí)間： 2015-11-22
上傳用戶：thinode
用全選主元高斯消去法求解N復(fù)系數(shù)階線性方程組AX=B
上傳時(shí)間： 2015-11-25
上傳用戶：ggwz258
一、 一元三次回歸方程 CubicMultinomialRegress.cs 方程模型為Y=a*X(3)+b*X(2)+c*X(1)+d public override double[] buildFormula() 得到系數(shù)數(shù)組，存放順序與模型系數(shù)相反，即該數(shù)組中系數(shù)的值依次是d,c,b,a。 以后所述所有模型的系數(shù)存放均與此相同（多元線性回歸方程除外）。 public override double forecast(double x) 預(yù)測函數(shù)，根據(jù)模型得到預(yù)測結(jié)果 public override double computeR2() 計(jì)算相關(guān)系數(shù)（決定系數(shù)），系數(shù)越接近1，數(shù)據(jù)越滿足該模型。
標(biāo)簽： CubicMultinomialRegress override public double
上傳時(shí)間： 2015-11-25
上傳用戶：13215175592
雙曲線回歸方程 HyperbolaRegress.cs 注意！該模型要求a與b的值要大于0！使用該模型時(shí)應(yīng)注意驗(yàn)證這個(gè)限制條件。我在實(shí)現(xiàn)模型時(shí)未加入任何出錯(cuò)流程控制。X不能為0。 方程模型為 public override double[] buildFormula() 得到系數(shù)數(shù)組，存放順序與模型系數(shù)相反，即該數(shù)組中系數(shù)的值依次是b,a。 public override double forecast(double x) 預(yù)測函數(shù)，根據(jù)模型得到預(yù)測結(jié)果。 public override double computeR2()
標(biāo)簽： HyperbolaRegress 模型 方程 cs
上傳時(shí)間： 2014-11-30
上傳用戶：youke111
對(duì)數(shù)回歸方程 LogarithmRegress.cs 方程模型為 Y=a*LnX+b public override double[] buildFormula() 得到系數(shù)數(shù)組，存放順序與模型系數(shù)相反，即該數(shù)組中系數(shù)的值依次是b,a。 public override double forecast(double x) 預(yù)測函數(shù)，根據(jù)模型得到預(yù)測結(jié)果。 public override double computeR2() 計(jì)算相關(guān)系數(shù)（決定系數(shù)），系數(shù)越接近1，數(shù)據(jù)越滿足該模型。
標(biāo)簽： LogarithmRegress buildFormula override public
上傳時(shí)間： 2014-01-23
上傳用戶：330402686
一個(gè)簡單的b tree 實(shí)現(xiàn)代碼，可用于緩存數(shù)據(jù)，提高查詢速度
上傳時(shí)間： 2015-11-27
上傳用戶：it男一枚
b樣條插值，曲線逼近連續(xù)直線，任意選取
標(biāo)簽： 插值
上傳時(shí)間： 2013-12-09
上傳用戶：athjac
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