参考文档下载:Latex算法包
\documentclass[11pt]{article}
\usepackage{CJK}
\usepackage[top=2cm, bottom=2cm, left=2cm, right=2cm]{geometry}
\usepackage{algorithm}
\usepackage{algorithmicx}
\usepackage{algpseudocode}
\usepackage{amsmath}
\floatname{algorithm}{算法}
\renewcommand{\algorithmicrequire}{\textbf{输入:}}
\renewcommand{\algorithmicensure}{\textbf{输出:}}
\begin{document}
\begin{CJK*}{UTF8}{gkai}
\begin{algorithm}
\caption{数据依赖分析}
\begin{algorithmic}[1] %每行显示行号
\Require $dest History$数组,历史目的寄存器;$src History$数组,历史源寄存器
%\Ensure 逆序数
\Function {DataHazard}{$Instruction, InstrNum$}
\State $i\gets 0$
\State $j\gets 0$
\State $k\gets 0$
\State $p\gets 0$
\For{$p = 0 \to InstrNum-1$}
\State $dest,src1,src2 \gets Extract(Instruction[p])$
\If{$dest\ \textbf{in}\ destHistory$}
\State $WAW[i++].reg\gets dest$
\State $WAW[i++].order\gets destHistory.index(dest)$
\EndIf
\If{$dest\ \textbf{in}\ srcHistory$}
\State $WAR[j++].reg\gets dest$
\State $WAR[j++].order\gets srcHistory.index(dest)$
\EndIf
\If{$src1\ \textbf{in}\ destHistory$}
\State $RAW[k++].reg\gets src1$
\State $RAW[k++].order\gets destHistory.index(src1)$
\EndIf
\If{$src2!=null\ \textbf{and}\ src2\ in\ destHistory$}
\State $RAW[k++].reg\gets src2$
\State $RAW[k++].order\gets destHistory.index(src2)$
\EndIf
\State $destHistory.append(dest)$
\State $srcHistory.append(src1)$
\State $srcHistory.append(src2)$
\EndFor
\State \Return{$\&WAW,\&WAR,\&RAW$}
\EndFunction
\end{algorithmic}
\end{algorithm}
\end{CJK*}
\end{document}