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| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | Doc/Zsh/contrib.yo | 14 |
2 files changed, 17 insertions, 2 deletions
@@ -1,3 +1,8 @@ +2015-01-12 Peter Stephenson <p.stephenson@samsung.com> + + * 34253: Doc/Zsh/contrib.yo: warning on integer arithmetic + for zcalc, c.f. 34194. + 2015-01-11 Barton E. Schaefer <schaefer@zsh.org> * 34247: Test/C01arith.ztst: regression test for 34230. 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 |