Re: RFD: Adding an op that checks for Inf, -Inf, NaN

[Nick Wellnhofer]

On 06/12/2011 11:09, Moritz Lenz wrote:

Hi all,

for some operations in Rakudo it is important for us to check if a num
value is one of Inf/-Inf/NaN.

Something like the following should work without new ops:

isNaN(d) { return d != d; }
isInf(d) { return d > DBL_MAX; }
isNegativeInf(d) { return d < -DBL_MAX; }

Nick
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