int CLinearSystem::Reduce()
{
int operations = 0;
for(int n = 0; n < m_n; n++)
{
NormalizeLine(n);
for(int m = 0; m < m_m-1; m++)
{
if(Get(n,m) == 1)
{
for(int n2 = 0; n2 < m_n; n2++)
{
if(n == n2)
continue;
if(Get(n2,m) != 0)
{
SubstractLine(n,n2,Get(n2,m));
}
}
}
}
}
return operations;
}
/*
-------------------------------------------------------------------------------
Class: CStifSectionParser
Method: ParseStartAndEndPos
Description: Start and end position parser.
Parameters: TPtrC aSection: in: Parsed section
const TDesC& aStartTag: in: Start tag of parsing
TTagToReturnValue aTagIndicator: in: Will aStartTag included to
the returned values
TInt& aStartPos: inout: Start point of parsing
TInt& aEndPos: inout: End point of parsing
TInt& aLength: inout: Length of parsed section
Return Values: TInt: Error code
Errors/Exceptions: None
Status: Proposal
-------------------------------------------------------------------------------
*/
TInt CStifSectionParser::ParseStartAndEndPos( TPtrC aSection,
const TDesC& aStartTag,
TTagToReturnValue aTagIndicator,
TInt& aStartPos,
TInt& aEndPos,
TInt& aLength )
{
TLex lex( aSection );
lex.SkipAndMark( iSkipAndMarkPos );
// Check is aStartTag given
if ( aStartTag.Length() == 0 )
{
// Skip line break, tabs, spaces etc.
lex.SkipSpace();
aStartPos = lex.Offset();
}
else
{
// While end of section and aStartTag is given
while ( !lex.Eos() )
{
lex.SkipSpace();
TPtrC line = SubstractLine( lex.Remainder() );
TInt tagStartPos = 0;
TInt tagEndPos = 0;
if ( FindTag( line, aStartTag, tagStartPos, tagEndPos ) == KErrNone )
{
if ( aTagIndicator == ETag )
{
aStartPos = lex.Offset();
}
else
{
aStartPos = lex.Offset() + tagEndPos;
if ( line.Length() - tagEndPos == 0 )
{
return KErrNotFound;
}
}
break;
}
GotoEndOfLine( lex );
}
}
// End tag parsing starts and if we are end of the section
if( lex.Eos() )
{
return KErrNotFound;
}
// "Delete" white spaces(includes line break)
aEndPos = GotoEndOfLine( lex );
// Position where start next parsing.(End position, includes white spaces)
iSkipAndMarkPos = lex.Offset();
// The length includes spaces and end of lines
aLength = ( aEndPos - aStartPos );
return KErrNone;
}
