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| author | dos-reis <gdr@axiomatics.org> | 2007-12-03 22:54:12 +0000 |
|---|---|---|
| committer | dos-reis <gdr@axiomatics.org> | 2007-12-03 22:54:12 +0000 |
| commit | 8b424a73bdf2d02563dbf166b9dd47e9d887d364 (patch) | |
| tree | 2ed3bf722203bba0af0dc001bd859c90168a95f1 /src/interp | |
| parent | 75508c6a271684806384718967765bb6c62e0d84 (diff) | |
| download | open-axiom-8b424a73bdf2d02563dbf166b9dd47e9d887d364.tar.gz | |
* vmlisp.lisp (CGREATERP): Return canonical truthvalue.
Diffstat (limited to 'src/interp')
| -rw-r--r-- | src/interp/ChangeLog | 4 | ||||
| -rw-r--r-- | src/interp/vmlisp.lisp | 8 |
2 files changed, 11 insertions, 1 deletions
diff --git a/src/interp/ChangeLog b/src/interp/ChangeLog index 2c4a741d..462d22fa 100644 --- a/src/interp/ChangeLog +++ b/src/interp/ChangeLog @@ -1,5 +1,9 @@ 2007-12-03 Gabriel Dos Reis <gdr@cs.tamu.edu> + * vmlisp.lisp (CGREATERP): Return canonical truthvalue. + +2007-12-03 Gabriel Dos Reis <gdr@cs.tamu.edu> + * pf2sex.boot (pf2Sex1): Be talkative about why a parse form is Wrong. 2007-12-03 Gabriel Dos Reis <gdr@cs.tamu.edu> diff --git a/src/interp/vmlisp.lisp b/src/interp/vmlisp.lisp index c2d66fd9..e422fa18 100644 --- a/src/interp/vmlisp.lisp +++ b/src/interp/vmlisp.lisp @@ -1039,7 +1039,13 @@ (defun CHAR2NUM (c) (char-code (character c))) -(defun CGREATERP (s1 s2) (string> (string s1) (string s2))) +;; Returns truthvalue (nil or t) if s1 compares lexicographically +;; greater than s2. Note: It is essential that this function returns +;; a canonical Boolean value because parts of the system use it in +;; contexts where generalized Boolean values are confusing. +(defun CGREATERP (s1 s2) + (cond ((string> (string s1) (string s2)) t))) + (define-function 'STRGREATERP #'CGREATERP) |