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Krzysztof kuhy Rudnicki
ffa5dad02a
The 250-line cap applies to prose too, and the reports were the worst
offenders -- ENUME's projectA.tex alone was 1,876 lines. Each is now a
preamble plus one \input{} per section, which is how a long LaTeX document is
normally organised; not one byte of prose was rewritten.
"The PDF is unchanged" is checked by a script rather than by eye, because
hashing the PDF cannot work: pdflatex stamps a /CreationDate and an /ID into
every build, so two runs of the SAME source already differ. tex_fingerprint.sh
compares what a reader sees instead -- page count plus a hash of the extracted
text -- and it is stable across rebuilds of untouched sources, which is the
property that makes it usable as a gate.
It earned its keep immediately. Both ECOTE reports quote an example LaTeX
document inside an lstlisting block, so \end{document} appears in the middle
of the file; splitting on the FIRST one stranded everything after it. Same
page count, different text, caught automatically. EOPSY lab3 exposed a second
bug: a \section{} title that runs onto the next line.
Result: 19 .tex over the cap -> 1. The survivor,
ELAC/.../03-building-nfa-...tex, is 418 lines of consecutive tikz figures
with no subsection to split on and needs a hand-placed boundary.
Verified: 29 splits across two passes (section, then subsection for the
pieces still over), every one reporting `unchanged` from
scripts/tex_fingerprint.sh --check.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0172dj34FDpao6wsix8ZuCzE
39 lines
1.0 KiB
TeX
39 lines
1.0 KiB
TeX
\section{backSubstitution.m}
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\subsection{backSubstitution}
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\begin{simplechar}
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\begin{lstlisting}
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function solution = backSubstitution(Matrix)
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Columns = size(Matrix, 1);
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Matrix = backSubstitutionOuterLoop(Matrix, Columns);
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% rightmost column of the Matrix is now our result
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solution = Matrix(:, size(Matrix, 2));
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end
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\end{lstlisting}
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\end{simplechar}
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\subsection{backSubstitutionOuterLoop}
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\begin{simplechar}
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\begin{lstlisting}
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function Matrix = backSubstitutionOuterLoop(Matrix, Columns)
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for k = Columns : -1 : 1
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% Diagonal coefficients of matrix need to be equal to 1
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Matrix(k, :) = Matrix(k, :) / Matrix(k, k);
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Matrix = eliminateFactors(Matrix, k);
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end
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end
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\end{lstlisting}
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\end{simplechar}
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\subsection{eliminateFactors}
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\begin{simplechar}
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\begin{lstlisting}
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function Matrix = eliminateFactors(Matrix, k)
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for row = (k - 1) : -1 : 1
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Matrix(row, :) = Matrix(row, :) - Matrix(k, :) * (Matrix(row, k) / Matrix(k, k));
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end
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end
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\end{lstlisting}
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\end{simplechar}
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