Timothy Flynn f16f3c4677 LibJS: Update ToRawPrecision / ToRawFixed AO spec comments ...

This is a normative change in the Intl spec:
https://github.com/tc39/ecma402/commit/f0f66cf

There are two main changes here:
1. Converting BigInt/Number objects to mathematical values.
2. A change in how ToRawPrecision computes its exponent and significant
   digits.

For (1), we do not yet support BigInt number formatting, thus already
have coerced Number objects to a double. When BigInt is supported, the
number passed into these methods will likely still be a Value, thus can
be coereced then.

For (2), our implementation already returns the expected edge-case
results pointed out on the spec PR.

2022-01-02 20:07:03 +01:00

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