On 13 Jun 2019, at 11:08pm, Keith Medcalf <kmedc...@dessus.com> wrote:

> Note that even when the column is declared with no affinity that NaNs are 
> stored as null.  Other than NaN, all other IEEE754 double values (including 
> subnormals and +/- Inf) seem to round-trip correctly through the bind_double 
> and column_double interface ...

Just to round this off, IEEE754 has two different NaN values: signalling and 
non-signalling.  SQLite doesn't distinguish between them.
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