.TH "sc::DFPUpdate" 3 "Sun Oct 4 2020" "Version 2.3.1" "MPQC" \" -*- nroff -*-
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.SH NAME
sc::DFPUpdate \- The \fBDFPUpdate\fP class is used to specify a Davidson, Fletcher, and Powell hessian update scheme\&.  

.SH SYNOPSIS
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.PP
.PP
\fC#include <update\&.h>\fP
.PP
Inherits \fBsc::HessianUpdate\fP\&.
.PP
Inherited by \fBsc::BFGSUpdate\fP\&.
.SS "Public Member Functions"

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.RI "\fBDFPUpdate\fP (\fBStateIn\fP &)"
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.RI "\fBDFPUpdate\fP (const \fBRef\fP< \fBKeyVal\fP > &)"
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.RI "The \fBKeyVal\fP constructor reads the following keywords: "
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.RI "void \fBsave_data_state\fP (\fBStateOut\fP &)"
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.RI "Save the base classes (with save_data_state) and the members in the same order that the \fBStateIn\fP CTOR initializes them\&. "
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.RI "void \fBupdate\fP (const \fBRefSymmSCMatrix\fP &ihessian, const \fBRef\fP< \fBFunction\fP > &, const \fBRefSCVector\fP &xnew, const \fBRefSCVector\fP &gnew)"
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.RI "void \fBapply_transform\fP (const \fBRef\fP< \fBNonlinearTransform\fP > &)"
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.RI "void \fBset_inverse\fP ()"
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.SS "Protected Attributes"

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.RI "\fBRefSCVector\fP \fBxprev\fP"
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.RI "\fBRefSCVector\fP \fBgprev\fP"
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.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
The \fBDFPUpdate\fP class is used to specify a Davidson, Fletcher, and Powell hessian update scheme\&. 


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.SH "Constructor & Destructor Documentation"
.PP 
.SS "sc::DFPUpdate::DFPUpdate (const \fBRef\fP< \fBKeyVal\fP > &)"

.PP
The \fBKeyVal\fP constructor reads the following keywords: 
.IP "\fB\fCxprev\fP\fP" 1c
The previous coordinates can be given (but is not recommended)\&. The default is none\&.
.PP
.IP "\fB\fCgprev\fP\fP" 1c
The previous gradient can be given (but is not recommended)\&. The default is none\&.
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.PP

.SH "Member Function Documentation"
.PP 
.SS "void sc::DFPUpdate::save_data_state (\fBStateOut\fP &)\fC [virtual]\fP"

.PP
Save the base classes (with save_data_state) and the members in the same order that the \fBStateIn\fP CTOR initializes them\&. This must be implemented by the derived class if the class has data\&. 
.PP
Reimplemented from \fBsc::HessianUpdate\fP\&.
.PP
Reimplemented in \fBsc::BFGSUpdate\fP\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for MPQC from the source code\&.