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Added inf? and nan?.

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Marius Vollmer 2002-05-09 19:35:32 +00:00
parent 06dba652b0
commit 7b232758cd
1 changed files with 5 additions and 0 deletions
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5
NEWS
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@ -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