[llvm] [APFloat] Fix literals with long significands. (PR #102051)

[Craig Topper via llvm-commits]

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@@ -763,25 +747,44 @@ ulpsFromBoundary(const APFloatBase::integerPart *parts, unsigned int bits,
 
 /* Place pow(5, power) in DST, and return the number of parts used.
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topperc wrote:

Comment needs updating. There is no longer a `DST` parameter.

https://github.com/llvm/llvm-project/pull/102051