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Now fslight looks perfect.
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It should be a bitcast as the integer value is actually an encoded FP
already.
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Note that llvmpipe still doesn't run on any processor yet: if you don't
have a recent processor with SSE4.1 you will still likely end up
hitting a code path for which a generic non-sse4 version is not
implemented yet.
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Union not worth the hassle of violating C99 or adding a name to
the structure.
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We are relying on SSE4.1 for round/trunc/ceil/floor. We'll need to
eventually find alternatives for the rest of the world.
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More obvious name.
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Mostly untested.
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Straightforward representation of floating-point/fixed-point/integer,
normalized/scaled, signed/unsigned SIMD vector types.
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