jyapayne/Nim
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

term rewriting macros fully implemented; still buggy

Browse source
This commit is contained in:
Araq 2012-09-03 00:55:44 +02:00
commit af7c92c003
22 changed files with 676 additions and 138 deletions
Download patch file Download diff file Expand all files Collapse all files

6
doc/manual.txt
View file

@ -621,14 +621,14 @@ determined). Assignments from the base type to one of its subrange types
A subrange type has the same size as its base type (``int`` in the example).
Nimrod requires `interval arithmetic`:idx: for subrange types over a set
of built-in operators that involve constants: ``x mod 3`` is of
of built-in operators that involve constants: ``x %% 3`` is of
type ``range[0..2]``. The following built-in operators for integers are
affected by this rule: ``-``, ``+``, ``*``, ``min``, ``max``, ``succ``,
``pred``, ``mod``, ``div``, ``and`` (bitwise ``and``).
``pred``, ``mod``, ``div``, ``%%``, ``and`` (bitwise ``and``).
Bitwise ``and`` only produces a ``range`` if one of its operands is a
constant *x* so that (x+1) is a number of two.
(Bitwise ``and`` is then a ``mod`` operation.)
(Bitwise ``and`` is then a ``%%`` operation.)
This means that the following code is accepted: