第二章.htm

清华大学出版得计算机系统结构得答案

style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2.2 
</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">解：</SPAN></B><B 
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></B></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>1) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最大尾数：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">1</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP> 
- 6<o:p></o:p></SUP></SPAN></P>
<P class=MsoNormal><SUP><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN></SPAN></SUP><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2) 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最小正尾数：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP>-1</SUP><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>3) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最小尾数：－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">(1</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP> 
- 6</SUP>)<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>4) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最大负尾数：－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP> 
-1</SUP><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>5) </SPAN><SPAN class=GramE><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最大阶码</SPAN></SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2<SUP>6</SUP></SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">1<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>6) </SPAN><SPAN class=GramE><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最小阶码</SPAN></SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">: 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2 
<SUP>6<o:p></o:p></SUP></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>7) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最大正数：</SPAN><SPAN 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"> 
<SPAN lang=EN-US>(1</SPAN></SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP>-6</SUP>)* 
16 <SUP>64</SUP><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>8) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最小正数：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP>-1 
</SUP>* 16<SUP>-64</SUP><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>9) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最大负数：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">-16<SUP>-1</SUP>*16<SUP>-64<o:p></o:p></SUP></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>10) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最小负数：－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">(1</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP> 
- 6</SUP>)*16<SUP>64+1</SUP><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>11) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">浮点零：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">0<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>12) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">表数精度：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">1/2</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">×</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP>-(6-1)</SUP><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>13) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">表数效率：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">15/16<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><SPAN 
style="mso-spacerun: yes">&nbsp;</SPAN>14) </SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">能表示的<SPAN 
class=GramE>规格数浮点数</SPAN>个数：</SPAN><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">×</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">15</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">×</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">16<SUP>5</SUP></SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">×</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">×</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2<SUP>6</SUP>+1<o:p></o:p></SPAN></P>
<P class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2.3 
</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">解：</SPAN></B><B 
style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN-LEFT: 10.5pt"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">1) 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最大正数：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2<SUP>127</SUP>(</SPAN><st1:date 
Month="2" Day="23" Year="2002"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2-2<SUP>-23</SUP></SPAN></st1:date><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">)2)<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 10.5pt"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2) 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最小正数：</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2<SUP>-126</SUP>.2<SUP>-23</SUP>=2<SUP>-149<o:p></o:p></SUP></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 10.5pt"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">3) 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最大负数：－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2<SUP>-149<o:p></o:p></SUP></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 10.5pt"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">4) 
</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">最小负数：－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2<SUP>128</SUP>(1</SPAN><SPAN 
style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'">－</SPAN><SPAN 
lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">2<SUP>-24</SUP>)<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 10.5pt"><SPAN lang=EN-US 
style="FONT-SIZE: 15pt; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 楷体_GB2312">5)