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Manual: use inplace addition whenever possible - libzahl - big integer library |
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git clone git://git.suckless.org/libzahl |
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commit 626dc2a770207bc1398214e040166f58ec9b8df4 |
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parent 696d91144f19e4bac1265ae7665a3db72b845722 |
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Author: Mattias Andrée <[email protected]> |
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Date: Wed, 11 May 2016 20:50:06 +0200 |
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Manual: use inplace addition whenever possible |
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Signed-off-by: Mattias Andrée <[email protected]> |
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Diffstat: |
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M doc/arithmetic.tex | 17 +++++++++++++++++ |
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1 file changed, 17 insertions(+), 0 deletions(-) |
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--- |
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diff --git a/doc/arithmetic.tex b/doc/arithmetic.tex |
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@@ -87,6 +87,23 @@ is however not implemented because it is |
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not deemed important enough and would |
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be detrimental to libzahl's simplicity. |
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+{\tt zadd} and {\tt zadd\_unsigned} support |
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+in-place operation: |
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+ |
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+\begin{alltt} |
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+ zadd(a, a, b); |
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+ zadd(b, a, b); \textcolor{c}{/* \textrm{should be avoided} */} |
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+ zadd_unsigned(a, a, b); |
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+ zadd_unsigned(b, a, b); \textcolor{c}{/* \textrm{should be avoided} */} |
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+\end{alltt} |
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+ |
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+\noindent |
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+Use this whenever possible, it will improve |
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+your performance, as it will involve less |
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+CPU instructions for each character-addition |
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+and it may be possible to elementation some |
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+character-additions. |
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+ |
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\newpage |
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\section{Subtraction} |
