| 对数函数ln(x)在SDTA指令集结构上的实现 |
| |
| 引用本文： | 甘新标,戴葵,沈立,王志英.对数函数ln(x)在SDTA指令集结构上的实现[J].计算机工程与科学,2009,31(2). |
| |
| 作者姓名： | 甘新标 戴葵 沈立 王志英 |
| |
| 作者单位： | 国防科技大学计算机学院,湖南,长沙,410073 |
| |
| 摘 要： | SDTA指令集体系结构是一种基于传输触发的VLIW体系结构。本文结合SDTA指令集结构的特点,经过循环展开和循环化简、强度消弱、过程集成、机器方言和指令归并等指令调度优化技术,高效实现了自然对数函数ln(x)。实验结果表明,在Neuron处理器上,ln(x)不但数据精度高,而且运行周期数只有gcc3.2.2数学库中自然对数函数运行周期数的33%左右。
|
| 关 键 词： | 对数函数ln(x) SDTA指令集 Neuron处理器 指令调度优化 |
Implementation of the Natural Logarithm Function ln(x) on the SDTA Instruction Set Architecture |
| |
| GAN Xin-biao,DAI Kui,SHEN Li,WANG Zhi-ying.Implementation of the Natural Logarithm Function ln(x) on the SDTA Instruction Set Architecture[J].Computer Engineering & Science,2009,31(2). |
| |
| Authors: | GAN Xin-biao DAI Kui SHEN Li WANG Zhi-ying |
| |
| Affiliation: | School of Computer Science;National University of Defense Technology;Changsha 410073;China |
| |
| Abstract: | Based on the transport triggering architecture, the SDTA(Synchronized Data Triggering Architecture) instruction set architecture is a VLIW(Very Long Instruction Word) architecture. According to the SDTA instruction set architecture, taking advantage of the instruction scheduling and optimization techniques,such as loop unrolling and loop simplification, strength reduction, procedure integration, machine idiom and instruction merge, ln(x) is implemented successfully in this paper. The experimental results sh... |
| |
| Keywords: | natural logarithm function ln(x) SDTA instruction set architecture Neuron microprocessor instructions scheduling and optimization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
