Too many fractional digits are removed when a number rounds up to a power of ten

[gibson042]

(originally posted by @gibson042 in #10 (comment))

Consider formatting "0.99" "0.999" with { maximumFractionDigits: 2 }, which AFAICT results in ToRawFixed(x=0.999, stringDigitCount=3, minFraction=0, maxFraction=2, roundingIncrement=1, unsignedRoundingMode="halfExpand"):

1. f ← maxFraction = 2
2. n1 ← 99; r1 ← 0.99
3. n2 ← 100; r2 ← 1
4. xFinal ← ApplyUnsignedRoundingMode(x, r1, r2, unsignedRoundingMode) = 1
5. [If xFinal is r1, …]. [Otherwise,] n ← n2 = 100
6. [If n = 0, …]. [Otherwise,] m ← toDecimal(n) = "100"
7. [If f ≠ 0, then]
   1. k ← getLength(m) = 3
   2. [If k ≤ f, then …]
   3. [Else,] zn ← 0
   4. a ← substring(m, 0, k - f = 3 - 2 = 1) "1"; b ← substring(m, k - f) = "00"
   5. int ← getLength(a) = 1
   6. [If n = 0, …]; [else] sfc ← stringDigitCount - int + zn = 3 - 1 + 0 = 2
   7. cut ← maxFraction - max(sfc, minFraction) = 2 - max(2, 0) = 2 - 2 = 0
   8. [Repeat, while cut > 0 and …]
   9. [If b is the empty String, …]; [else] m = a + "." + b = "1" + "." + "00" = "1.00"
8. [Else, …]
9. Return the Record { [[FormattedString]]: m = "1.00", [[RoundedNumber]]: xFinal = 1, [[IntegerDigitsCount]]: int = 1, [[RoundingMagnitude]]: –f = -2 }

It seems to return "1.0" rather than the expected output of "1.00".

EDIT: Updating the input from "0.99" to "0.999" so transformation actually takes place demonstrates lack of an issue.

[gibson042]

Updating the input from "0.99" to "0.999" so transformation actually takes place demonstrates lack of an issue.