Special float values

[jerry gay]

On Wed, Nov 26, 2008 at 07:46, Will Coleda <will at coleda.com> wrote:
> On Wed, Nov 26, 2008 at 10:42 AM, François Perrad
> <francois.perrad at gadz.org> wrote:
>>
>> in languages/lua/src/lib/mathx.pir, I want create numbers with special
>> value (NaN & Infinity), something like :
>>
>>   new $P0, 'Float'      # or 'LuaNumber'
>>   set $N0, 'NaN'
>>   set $P0, $N0
>>   say $P0
>>
>> Is it possible ?
>>
>> François.
>
> I don't know about inf, but yes, nan works:
>
> .sub main
>  $N0 = 'nan'
>  if $N0 != $N0 goto ok1
>  print 'not '
> ok1:
>  say 'ok 1'
>
>  $P0 = new 'Float'
>  $P0 = $N0
>  if $P0 != $P0 goto ok2
>  print 'not '
> ok2:
>  say 'ok 2'
>
> .end
>
i have a feeling that's os-dependent. msvc produces:
not ok 1
not ok 2

~jerry