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| author | Mattias Engdegård <mattiase@acm.org> | 2020-10-10 18:02:49 +0200 |
|---|---|---|
| committer | Mattias Engdegård <mattiase@acm.org> | 2020-10-13 11:29:01 +0200 |
| commit | cf407958886e46881216a510efebb8bc029de50c (patch) | |
| tree | 2f67e4b672f10355ad941a39abd58b6c523a3683 /lisp/emacs-lisp/backquote.el | |
| parent | add1314195b193f04164cebe558d7a185b61de96 (diff) | |
| download | emacs-cf407958886e46881216a510efebb8bc029de50c.tar.gz emacs-cf407958886e46881216a510efebb8bc029de50c.tar.bz2 emacs-cf407958886e46881216a510efebb8bc029de50c.zip | |
Calc: allow infinite binary word size (bug#43764)
Setting the word size ("b w") to 0 removes the word size clipping for
all bit operations (effectively as if a word size of -∞ had been set).
Rotation is disallowed; logical and arithmetic shifts behave
identically.
After a suggestion by Vincent Belaïche.
* lisp/calc/calc-bin.el (calc-word-size, math-binary-arg)
(math-binary-modulo-args, calcFunc-lsh, calcFunc-ash, calcFunc-rot)
(math-clip, math-format-twos-complement): Allow a word size of 0,
meaning -∞.
* test/lisp/calc/calc-tests.el
(calc-tests--not, calc-tests--and, calc-tests--or, calc-tests--xor)
(calc-tests--diff): New functions.
(calc-tests--clip, calc-tests--rot, calc-shift-binary): Extend to
cover word size 0.
(calc-bit-ops): New test.
* doc/misc/calc.texi (Binary Functions): Update manual.
* etc/NEWS: Announce the change.
Diffstat (limited to 'lisp/emacs-lisp/backquote.el')
0 files changed, 0 insertions, 0 deletions