Andrew Haley wrote:
Converting a vector of floats (via a cast) to a vector of ints of the
same size uses a VIEW_CONVERT_EXPR, so the data are simply copied, not
converted.  This is different from a cast from scalar float to int,
where a conversion is performed.a

Yes, that's the way C is defined

From what I can see of the source, this is deliberate.

I should hope so :-)
  But is this
behaviour documented anywhere?

In any book on C, or of course in the C standard.

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