From 626dc2a770207bc1398214e040166f58ec9b8df4 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Wed, 11 May 2016 20:50:06 +0200 Subject: Manual: use inplace addition whenever possible MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- doc/arithmetic.tex | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/doc/arithmetic.tex b/doc/arithmetic.tex index 713eedc..f16f04f 100644 --- 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} -- cgit v1.2.3-70-g09d2