from the CHANGES file:
6.5.26
- doc fixes
- date crashed on values resulting in dates before 1970-Jan-1 00:00:00
in the Win32 version. In Win32 now minimum value for date is 86400,
which is safely on or after 1970-Jan-1 00:00:00 for all time zones
- NaN can now be put into a variable for comparison
- division by zero now causes a math exception also in floats (previously
inf was returned in cygwin/Unix version and Win32 crashed)
- in mixed arithmetik using integer operators NaN is taken as 0
download from: //http://newlisp.org/download/development/
Lutz