tc39 / test262

I have a problem with the test case of

  // ~1.7976931348623157e+308 / 10^9
  // = ~1.7976931348623157 × 10^299
  {
    seconds: 0,
    milliseconds: 0,
    microseconds: 0,
    nanoseconds: Number.MAX_VALUE,
  },

f
What is the expected output in this test? It is not clear what you intend to test here.

Can you give a link to the test file where this occurs?

sorry

test262/test/intl402/DurationFormat/prototype/format/precision-exact-mathematical-values.js

Line 74 in 79e9b39

// ~1.7976931348623157e+308 / 10^9

Intl.DurationFormat uses mathematical values, which means Number.MAX_VALUE mustn't be formatted by Intl.DurationFormat as a IEEE-754 double value, but instead its exact value must be used. IOW, the output must resemble the output of Intl.NumberFormat("en").format(BigInt(Number.MAX_VALUE)) and not the output of Intl.NumberFormat("en").format(Number.MAX_VALUE) .

Related: Updates for tc39/proposal-intl-duration-format#173 are in #3988.

ok, that make sense.

nanoseconds: Number.MAX_VALUE in precision-exact-mathematical-values