Harking back to this, I've belatedly noticed that the tagged versions of
subVec, subArr, and update all take the supplied index and use it directly in
the Word8 array, when they should be multiplying it by bytesPerElem. The
double-precision and boxed versions have this right, but as it stands the
tagged version is only capable of retrieving or updating the first value in the
array correctly.
Multiplying i by bytesPerElem in each case fixes this, i.e. doing something
like this in all six of the tagged functions:
fun update(v, i, r) =
let
val w: word = r32AsWord r
+ val i = i * bytesPerElem
open Word8Array
... but I notice the double/boxed version has some more logic to check the int
is within range, so perhaps there is a more appropriate fix.
Chris
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