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Subject: =?gb2312?B?wP0xMS4xMQ==?=
Date: Tue, 23 Aug 2005 20:12:29 +0800
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Content-Location: mk:@MSITStore:D:\Downloads\software\huibian.chm::/example/example11-11.htm
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>=C0=FD11.11</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; charset=3Dgb2312">
<META content=3D"MSHTML 6.00.2800.1106" name=3DGENERATOR>
<META content=3DFrontPage.Editor.Document name=3DProgId><LINK=20
href=3D"mk:@MSITStore:D:\Downloads\software\huibian.chm::/Assember.css"=20
rel=3Dstylesheet></HEAD>
<BODY=20
background=3Dmk:@MSITStore:D:\Downloads\software\huibian.chm::/TextBookIM=
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<P>=C0=FD11.11 =
=B1=E0=D0=B4=D2=BB=B8=F6=D7=D3=B3=CC=D0=F2=A3=AC=C7=F3=BD=E2=D2=BB=D4=AA=B6=
=FE=B4=CE=B7=BD=B3=CC=B5=C4=B8=F9ax<SUP>2</SUP> + bx + c =3D =
0=B5=C4=B8=F9=A1=A3 </P>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" border=3D0>
<TBODY>
<TR>
<TD width=3D"100%" colSpan=3D4>
<P>=BD=E2=A3=BA</P></TD></TR>
<TR>
<TD width=3D"100%" colSpan=3D4>
=
<P>;=B5=F7=D3=C3=B2=CE=CA=FD=A3=BA=B7=BD=B3=CC=B5=C4=CF=B5=CA=FDa=A1=A2b=BA=
=CDc=A3=ACR1=BA=CDR2=CA=C7=D6=B8=CF=F2=B4=E6=B7=C5=B8=F9=B5=C4=D6=B8=D5=EB=
=A3=BB </P></TD></TR>
<TR>
<TD width=3D"100%" colSpan=3D4>
=
<P>;=B7=B5=BB=D8=B2=CE=CA=FD=A3=BA=B7=B5=BB=D8=D6=B5=B4=E6=D3=DAAX=D6=D0=A3=
=AC=C6=E4=BA=AC=D2=E5=A3=BA0=A1=AA=D3=D0=B6=FE=B8=F6=B8=F9=A3=AC1=A1=AA=D3=
=D0=D2=BB=B8=F6=B8=F9R1=A3=AC2=A1=AA=CE=DE=CA=B5=B8=F9=A1=A3</P></TD></TR=
>
<TR>
<TD vAlign=3Dtop width=3D"11%" rowSpan=3D24>Quadratic</TD>
<TD width=3D"89%" colSpan=3D3>
<P style=3D"MARGIN-LEFT: 41pt; TEXT-INDENT: -41pt">PROC USES DS DI =
SI,=20
AA:DWORD, BB:DWORD, CC:DWORD, R1:PDWORD, R2:PDWORD</P></TD></TR>
<TR>
<TD width=3D"8%">LES</TD>
<TD width=3D"24%">DI, R1</TD>
<TD width=3D"57%">;(ES:DI) =A1=FA 1st Root-R1</TD></TR>
<TR>
<TD width=3D"8%">LDS</TD>
<TD width=3D"25%">SI, R2</TD>
<TD width=3D"56%">;(DS:SI) =A1=FA 2nd Root-R2</TD></TR>
<TR>
<TD width=3D"8%">SUB</TD>
<TD width=3D"25%">BX, BX</TD>
<TD =
width=3D"56%">;=D3=C3BX=C0=B4=B1=EA=CA=B6=B7=BD=B3=CC=D3=D0=B8=F9=B5=C4=C7=
=E9=BF=F6</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FLD1</TD>
<TD width=3D"56%">;=D5=BB=B6=A5=BC=C4=B4=E6=C6=F7=D6=C31</TD></TR>
<TR>
<TD width=3D"8%">FADD</TD>
<TD width=3D"25%">ST, ST</TD>
<TD =
width=3D"56%">;=D5=BB=B6=A5=BC=C4=B4=E6=C6=F7=D7=D4=BC=D3=A3=AC=B1=E4=B3=C9=
2</TD></TR>
<TR>
<TD width=3D"8%">FLD</TD>
<TD width=3D"25%">ST</TD>
<TD =
width=3D"56%">;=B0=D1=CA=FD=D6=B52=B8=B4=D6=C6=D2=BB=B7=DD=B5=BD=D0=C2=B5=
=C4=D5=BB=B6=A5</TD></TR>
<TR>
<TD width=3D"8%">FMUL</TD>
<TD width=3D"25%">AA</TD>
<TD width=3D"56%">;ST =3D 2A</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FTST</TD>
<TD =
width=3D"56%">;=B2=E2=CA=D4ST=CA=C7=B7=F1=CE=AA0=A3=AC=BC=B4=A3=AC=BF=BC=C2=
=C7A=3D0=B5=C4=C7=E9=BF=F6</TD></TR>
<TR>
<TD width=3D"8%">FSTSW</TD>
<TD width=3D"25%">AX</TD>
<TD =
width=3D"56%">;=B0=D1=B5=B1=C7=B0=D7=B4=CC=AC=BC=C4=B4=E6=C6=F7=B4=E6=C8=EB=
AX=D6=D0</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FWAIT</TD>
<TD =
width=3D"56%">;=B5=C8=B4=FD=D0=AD=B4=A6=C0=ED=C6=F7=CD=EA=B3=C9=C9=CF=C3=E6=
=B2=D9=D7=F7</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>SAHF</TD>
<TD =
width=3D"56%">;AH=D7=B0=C8=EB=B5=BD=B1=EA=D6=BE=BC=C4=B4=E6=C6=F7=D6=D0</=
TD></TR>
<TR>
<TD width=3D"8%">JNZ</TD>
<TD width=3D"25%">Notzero</TD>
<TD width=3D"56%">;=BF=BC=C2=C7A =3D 0=B5=C4=C7=E9=BF=F6</TD></TR>
<TR>
<TD width=3D"8%">FLD</TD>
<TD width=3D"25%">CC</TD>
<TD width=3D"56%">;=B3=A3=CA=FD=CF=EEC=BD=F8=D5=BB</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FCHS</TD>
<TD =
width=3D"56%">;=B8=C4=B1=E4=D5=BB=B6=A5=B5=C4=B7=FB=BA=C5=A3=AC=B5=C3=B5=BD=
-C</TD></TR>
<TR>
<TD width=3D"8%">FLD</TD>
<TD width=3D"25%">BB</TD>
<TD width=3D"56%">;=B2=CE=CA=FDB=BD=F8=D5=BB</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FTST</TD>
<TD =
width=3D"56%">;=B2=E2=CA=D4=B5=B1=C7=B0=D5=BB=B6=A5=CA=C7=B7=F1=CE=AA0</T=
D></TR>
<TR>
<TD width=3D"8%">FSTSW</TD>
<TD width=3D"81%" colSpan=3D2>AX</TD></TR>
<TR>
<TD width=3D"89%" colSpan=3D3>SAHF</TD></TR>
<TR>
<TD width=3D"8%">JZ</TD>
<TD width=3D"25%">EXIT2</TD>
<TD width=3D"56%">;=BF=BC=C2=C7B =3D 0=B5=C4=C7=E9=BF=F6</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FDIV</TD>
<TD width=3D"56%">;=BC=C6=CB=E3=B3=F6-C/B</TD></TR>
<TR>
<TD width=3D"8%">FSTP</TD>
<TD width=3D"25%">dword ptr ES:[DI]</TD>
<TD =
width=3D"56%">;=B5=C3=B5=BD=D2=BB=B8=F6=B8=F9=A3=AC=B2=A2=B5=AF=B3=F6=D5=BB=
=B6=A5</TD></TR>
<TR>
<TD width=3D"8%">FSTP</TD>
<TD width=3D"25%">ST</TD>
<TD =
width=3D"56%">;=B5=AF=B3=F6=B6=E0=D3=E0=B5=C4=B6=D1=D5=BB=CA=FD=BE=DD</TD=
></TR>
<TR>
<TD width=3D"8%">JMP</TD>
<TD width=3D"25%">EXIT1</TD>
<TD =
width=3D"56%">;=B7=B5=BB=D8=A3=AC=B2=A2=B1=EA=CA=B6=D3=D01=B8=F6=B8=F9</T=
D></TR>
<TR>
<TD vAlign=3Dtop width=3D"11%" rowSpan=3D17>Notzero:</TD>
<TD width=3D"89%" colSpan=3D3></TD></TR>
<TR>
<TD width=3D"8%">FMUL</TD>
<TD width=3D"25%">ST(1), ST</TD>
<TD width=3D"56%">;ST(1) =3D 4A</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FXCH</TD>
<TD width=3D"56%">;ST=BA=CDST(1)=BD=BB=BB=BB</TD></TR>
<TR>
<TD width=3D"8%">FMUL</TD>
<TD width=3D"25%">CC</TD>
<TD width=3D"56%">;ST =3D 4AC</TD></TR>
<TR>
<TD width=3D"89%" colSpan=3D3>FTST</TD></TR>
<TR>
<TD width=3D"8%">FSTSW</TD>
<TD width=3D"81%" colSpan=3D2>AX</TD></TR>
<TR>
<TD width=3D"89%" colSpan=3D3>SAHF</TD></TR>
<TR>
<TD width=3D"8%">JP</TD>
<TD width=3D"25%">EXIT2</TD>
<TD =
width=3D"56%">;=C8=E7=B9=FB=D7=B4=CC=AC=CE=BBC2=3D1=A3=AC=D4=F24AC=CA=C7=CE=
=DE=C7=EE=B4=F3</TD></TR>
<TR>
<TD width=3D"8%">FLD</TD>
<TD width=3D"25%">BB</TD>
<TD width=3D"56%">;=D7=B0=C8=EB=B2=CE=CA=FDB</TD></TR>
<TR>
<TD width=3D"8%">FMUL</TD>
<TD width=3D"25%">ST, ST</TD>
<TD width=3D"56%">;ST =3D B2</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FSUBR</TD>
<TD width=3D"56%">;ST =3D B2 - 4AC</TD></TR>
<TR>
<TD width=3D"89%" colSpan=3D3>FTST</TD></TR>
<TR>
<TD width=3D"8%">FSTSW</TD>
<TD width=3D"81%" colSpan=3D2>AX</TD></TR>
<TR>
<TD width=3D"89%" colSpan=3D3>SAHF</TD></TR>
<TR>
<TD width=3D"8%">JC</TD>
<TD width=3D"25%">EXIT2</TD>
<TD width=3D"56%">;=C8=E7=B9=FBC0=3D1=A3=AC=D4=F2B2 < =
4AC</TD></TR>
<TR>
<TD width=3D"8%">JNZ</TD>
<TD width=3D"25%">Tworoot</TD>
<TD width=3D"56%">;=C8=E7=B9=FBC3=3D1=A3=AC=D4=F2B2 =3D =
4AC</TD></TR>
<TR>
<TD width=3D"8%">INC</TD>
<TD width=3D"25%">BX</TD>
<TD width=3D"56%">;=B1=EA=D6=BE=D3=D01=B8=F6=B8=F9</TD></TR>
<TR>
<TD vAlign=3Dtop width=3D"11%" rowSpan=3D14>Tworoot:</TD>
<TD width=3D"89%" colSpan=3D3></TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FSQRT</TD>
<TD width=3D"56%">;=C7=F3=B3=F6B2 - =
4AC=B5=C4=C6=BD=B7=BD=B8=F9</TD></TR>
<TR>
<TD width=3D"8%">FLD</TD>
<TD width=3D"81%" colSpan=3D2>BB</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FCHS</TD>
<TD width=3D"56%">;=B5=C3=B5=BD-B</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FXCH</TD>
<TD width=3D"56%">;ST =BA=CDST(1)=BD=BB=BB=BB</TD></TR>
<TR>
<TD width=3D"8%">FLD</TD>
<TD width=3D"25%">ST</TD>
<TD =
width=3D"56%">;=D5=BB=B6=A5=D4=D9=B8=B4=D6=C6=D2=BB=B7=DD</TD></TR>
<TR>
<TD width=3D"8%">FADD</TD>
<TD width=3D"25%">ST, ST(2)</TD>
<TD width=3D"56%">;ST =3D -B + SQRT(B2 - 4AC)</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FXCH</TD>
<TD width=3D"56%">;ST =BA=CDST(1)=BD=BB=BB=BB</TD></TR>
<TR>
<TD width=3D"8%">FSUBP</TD>
<TD width=3D"25%">ST(2), ST</TD>
<TD width=3D"56%">;ST =3D -B - SQRT(B2 - 4AC)</TD></TR>
<TR>
<TD width=3D"8%">FDIV</TD>
<TD width=3D"25%">ST, ST(2)</TD>
<TD width=3D"56%">;=B5=C3=B5=BD=D2=BB=B8=F6=B8=F9ST =3D =
ST/(2A)</TD></TR>
<TR>
<TD width=3D"8%">FSTP</TD>
<TD width=3D"25%">dword ptr ES:[DI]</TD>
<TD width=3D"56%">;=B4=E6=B4=A2=B5=DA=D2=BB=B8=F6=B8=F9</TD></TR>
<TR>
<TD width=3D"33%" colSpan=3D2>FDIVR</TD>
<TD width=3D"56%">;=B5=C3=B5=BD=C1=ED=D2=BB=B8=F6=B8=F9ST =3D =
ST/(2A)</TD></TR>
<TR>
<TD width=3D"8%">FSTP</TD>
<TD width=3D"25%">dword ptr DS:[SI]</TD>
<TD width=3D"56%">;=B4=E6=B4=A2=B5=DA=B6=FE=B8=F6=B8=F9</TD></TR>
<TR>
<TD width=3D"8%">JMP</TD>
<TD width=3D"81%" colSpan=3D2>EXIT</TD></TR>
<TR>
<TD vAlign=3Dtop width=3D"11%" rowSpan=3D3>EXIT2:</TD>
<TD width=3D"89%" colSpan=3D3></TD></TR>
<TR>
<TD width=3D"8%">INC</TD>
<TD width=3D"25%">BX</TD>
<TD =
width=3D"56%">;=CE=DE=B8=F9=CA=B1=B5=C4=B7=B5=BB=D8=B3=F6=BF=DA</TD></TR>=
<TR>
<TD width=3D"8%">FSTP</TD>
<TD width=3D"25%">ST</TD>
<TD =
width=3D"56%">;=C7=E5=B3=FD=B6=E0=D3=E0=B5=C4=B6=D1=D5=BB=CA=FD=BE=DD</TD=
></TR>
<TR>
<TD vAlign=3Dtop width=3D"11%" rowSpan=3D3>EXIT1:</TD>
<TD width=3D"89%" colSpan=3D3></TD></TR>
<TR>
<TD width=3D"8%">INC</TD>
<TD width=3D"25%">BX</TD>
<TD =
width=3D"56%">;=D3=D0=D2=BB=B8=F6=B8=F9=CA=B1=B5=C4=B7=B5=BB=D8=B3=F6=BF=DA=
</TD></TR>
<TR>
<TD width=3D"8%">FSTP</TD>
<TD width=3D"25%">ST</TD>
<TD =
width=3D"56%">;=C7=E5=B3=FD=B6=E0=D3=E0=B5=C4=B6=D1=D5=BB=CA=FD=BE=DD</TD=
></TR>
<TR>
<TD vAlign=3Dtop width=3D"11%" rowSpan=3D3>EXIT:</TD>
<TD width=3D"89%" colSpan=3D3></TD></TR>
<TR>
<TD width=3D"8%">MOV</TD>
<TD width=3D"81%" colSpan=3D2>AX, BX</TD></TR>
<TR>
<TD width=3D"89%" colSpan=3D3>RET</TD></TR>
<TR>
<TD vAlign=3Dtop width=3D"11%" rowSpan=3D2>Quadratic</TD>
<TD width=3D"89%" colSpan=3D3>ENDP</TD></TR>
<TR>
<TD width=3D"89%" colSpan=3D3>END</TD></TR></TBODY></TABLE>
<P align=3Dcenter><A =
href=3D"javascript:close();">=B9=D8=A1=A1=B1=D5</A></P></BODY></HTML>
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H1 {
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H2 {
FONT-SIZE: 14pt; COLOR: #ff00ff
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H3 {
FONT-SIZE: 12pt; COLOR: #ff00ff
}
BODY {
FONT-SIZE: 10pt; LINE-HEIGHT: 130%; FONT-FAMILY: Arial; LETTER-SPACING: =
1px
}
TBODY {
FONT-SIZE: 10pt; FONT-FAMILY: Arial; LETTER-SPACING: 1px
}
TD.tt {
BORDER-BOTTOM: #56c7ff 1px solid
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