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[SR-15156] Decimal(sign:exponent:significand:) traps for overly large exponents #3359

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xwu opened this issue Sep 4, 2021 · 1 comment
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[SR-15156] Decimal(sign:exponent:significand:) traps for overly large exponents #3359

xwu opened this issue Sep 4, 2021 · 1 comment
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xwu commented Sep 4, 2021

Previous ID SR-15156
Radar None
Original Reporter @xwu
Type Bug
Status Resolved
Resolution Done
Additional Detail from JIRA
Votes 0
Component/s Foundation
Labels Bug
Assignee @xwu
Priority Medium

md5: 04f0e1ecffd41bad94ee12a23f35d9d1

Issue Description:

Consider the following:

import Foundation
let x = Double.greatestFiniteMagnitude
Double(sign: .plus, exponent: 10, significand: x) // +inf
Double(sign: .plus, exponent: .max, significand: x) // +inf
let y = Decimal.greatestFiniteMagnitude
Decimal(sign: .plus, exponent: 10, significand: y) // nan
Decimal(sign: .plus, exponent: .max, significand: y) // runtime error (!)

The expected result is that Decimal should overflow to NaN (since it has no representation of infinity).
@xwu
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xwu commented Sep 4, 2021

#3074

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 5, 2022
This issue was closed.
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