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Non-IEEE Division, Square Root, Reciproc - 项目摘要 |
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Intel has developed a set of recommended algorithms for performing non-IEEE floating-point division, square root, reciprocal, and reciprocal square root operations on the Intel Itanium architecture. All the Intel-provided algorithms have been carefully designed to provide results that have an error of no more than 1 ulp (unit-in-the-last-place) when rounding to nearest mode is used (but most often less than 0.5 ulp), and no more than 1.5 ulp when other rounding modes are used. The document provides an overview of the scope of the algorithm set, describes the mathematics of each algorithm, and includes each in the form of a function coded in assembly language for the Intel Itanium processors. The intention is that these can be inlined by compilers, used as the core of mathematical libraries, or called on as macros by assembly language programmers.
Intel为在Intel Itanium 体系结构上执行非IEEE浮点的除,求平方根，倒数，倒平方根运算而开发了一套推荐的算法。Intel提供的所有算法经过精心设计，当使用取整到最相近的模式时（但经常小于0.5 ulp）提供的结果误差不超过1 ulp (unit-in-the-last-place)，当使用其它取整算法时不超过1.5 ulp 。文档提供了算法集的概要，描述了每个算法的数学原理，并包含了每个算法用Intel Itanium处理器汇编语言的函数实现。其目的是可以被编译器进行联编，用作核心的数学库，或者由汇编程序员将其作为宏来调用。
来源: http://www.intel.com/software/products/opensource/libraries/numnote3.htm |
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cbd007
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| 最新发布源码包 |
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| 1.0 |
1.0 |
2004-10-01 |
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