diff options
| author | dos-reis <gdr@axiomatics.org> | 2008-09-21 03:35:55 +0000 |
|---|---|---|
| committer | dos-reis <gdr@axiomatics.org> | 2008-09-21 03:35:55 +0000 |
| commit | fd8c12056474ecab97015eff9cdadd4bd77b5fd5 (patch) | |
| tree | 9e6106481e73d5cd1b78e7653e8414d585ef76ab /src/algebra/data.spad.pamphlet | |
| parent | fde9260a842114ae27a99f7de23c9a46b79eccf4 (diff) | |
| download | open-axiom-fd8c12056474ecab97015eff9cdadd4bd77b5fd5.tar.gz | |
* interp/sys-macros.lisp (|byteEqual|): New.
* algebra/boolean.spad.pamphlet (PropositionalLogic): Extend
SetCategory.
(PropositionalFormula): Now unconditional exports coercion to
OutputForm. Adjust implementation.
(KleeneTrivalentLogic): New.
* algebra/data.spad.pamphlet (Byte): Tidy.
* algebra/Makefile.pamphlet (axiom_algebra_layer_0): Move PROPLOG
to layer 1.
Diffstat (limited to 'src/algebra/data.spad.pamphlet')
| -rw-r--r-- | src/algebra/data.spad.pamphlet | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/algebra/data.spad.pamphlet b/src/algebra/data.spad.pamphlet index 9640d7ad..e3262ef5 100644 --- a/src/algebra/data.spad.pamphlet +++ b/src/algebra/data.spad.pamphlet @@ -36,7 +36,7 @@ Byte(): Public == Private where Private ==> add byte(x: NonNegativeInteger): % == - byteGreaterEqual(x,256$Lisp)$Lisp => + not (x < 256$Lisp) => userError "integer value cannot be represented by a byte" x : % @@ -48,6 +48,9 @@ Byte(): Public == Private where coerce(x: %): OutputForm == x::NonNegativeInteger::OutputForm + + x = y == + byteEqual(x,y)$Lisp x < y == byteLessThan(x,y)$Lisp |