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Added inf? and nan?.
author
Marius Vollmer
<mvo@zagadka.de>
Thu, 9 May 2002 19:35:32 +0000
(19:35 +0000)
committer
Marius Vollmer
<mvo@zagadka.de>
Thu, 9 May 2002 19:35:32 +0000
(19:35 +0000)
NEWS
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b/NEWS
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--- a/
NEWS
+++ b/
NEWS
@@
-20,6
+20,8
@@
debugging evaluator gives better error messages.
* Changes to Scheme functions and syntax
+** New function 'unsetenv'.
+
** There is support for Infinity and NaNs.
Following PLT Scheme, Guile can now work with infinite numbers, and
@@
-45,6
+47,9
@@
For example
(/ 0)
ERROR: Numerical overflow
+Two new predicates 'inf?' and 'nan?' can be used to test for the
+special values.
+
** We now have uninterned symbols.
The new function 'make-symbol' will return a uninterned symbol. This