libzahl

big integer library
git clone git://git.suckless.org/libzahl
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commit 626dc2a770207bc1398214e040166f58ec9b8df4
parent 696d91144f19e4bac1265ae7665a3db72b845722
Author: Mattias Andrée <maandree@kth.se>
Date:   Wed, 11 May 2016 20:50:06 +0200

Manual: use inplace addition whenever possible

Signed-off-by: Mattias Andrée <maandree@kth.se>

Diffstat:
Mdoc/arithmetic.tex | 17+++++++++++++++++
1 file changed, 17 insertions(+), 0 deletions(-)

diff --git a/doc/arithmetic.tex b/doc/arithmetic.tex @@ -87,6 +87,23 @@ is however not implemented because it is not deemed important enough and would be detrimental to libzahl's simplicity. +{\tt zadd} and {\tt zadd\_unsigned} support +in-place operation: + +\begin{alltt} + zadd(a, a, b); + zadd(b, a, b); \textcolor{c}{/* \textrm{should be avoided} */} + zadd_unsigned(a, a, b); + zadd_unsigned(b, a, b); \textcolor{c}{/* \textrm{should be avoided} */} +\end{alltt} + +\noindent +Use this whenever possible, it will improve +your performance, as it will involve less +CPU instructions for each character-addition +and it may be possible to elementation some +character-additions. + \newpage \section{Subtraction}