From 626650f20e5c01fa6554da2a73dc5338a2523842 Mon Sep 17 00:00:00 2001 From: Peter Stephenson Date: Mon, 12 Jan 2015 11:10:07 +0000 Subject: 34253: warn in zcalc doc about integer arithmetic. C.f. warning in arithmetic doc in 34194. --- Doc/Zsh/contrib.yo | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'Doc') diff --git a/Doc/Zsh/contrib.yo b/Doc/Zsh/contrib.yo index 50432432b..00ede52aa 100644 --- a/Doc/Zsh/contrib.yo +++ b/Doc/Zsh/contrib.yo @@ -3227,8 +3227,18 @@ A reasonably powerful calculator based on zsh's arithmetic evaluation facility. The syntax is similar to that of formulae in most programming languages; see ifzman(the section `Arithmetic Evaluation' in zmanref(zshmisc))\ -ifnzman(noderef(Arithmetic Evaluation)) for details. The mathematical -library tt(zsh/mathfunc) will be loaded if it is available; see +ifnzman(noderef(Arithmetic Evaluation)) for details. + +Non-programmers should note that, as in many other programming +languages, expressions involving only integers (whether constants +without a `tt(.)', variables containing such constants as strings, or +variables declared to be integers) are by default evaluated using +integer arithmetic, which is not how an ordinary desk calculator +operates. To force floating point operation, pass the option tt(-f); +see further notes below. + +The mathematical library tt(zsh/mathfunc) will be loaded if it is +available; see ifzman(the section `The zsh/mathfunc Module' in zmanref(zshmodules))\ ifnzman(noderef(The zsh/mathfunc Module)). The mathematical functions correspond to the raw system libraries, so trigonometric functions are -- cgit 1.4.1