Matt Pharr 46716aada3 Switch to unordered floating point compares. ...

In particular, this gives us desired behavior for NaNs (all compares
involving a NaN evaluate to true).  This in turn allows writing the
canonical isnan() function as "v != v".

Added isnan() to the standard library as well.

2012-06-20 13:25:53 -07:00

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