[iOS][tvOS] Generic math IntPtr SByte and Int16 test failures

[steveisok]

The following generic math tests fail on iOS/tvOS devices:

IntPtrTests:

• CreateSaturatingFromSByteTest
• CreateSaturatingFromInt16Test
• CreateTruncatingFromSByteTest
• CreateTruncatingFromInt16Test
• TryCreateFromSByteTest
• TryCreateFromInt16Test

Each failure is due to actual results being positive when it's expected they are negative.

For example:

TryCreateFromSByteTest()

Expected: -128
Actual: 128

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Issue Details

---

The following generic math tests fail on iOS/tvOS devices:

• CreateSaturatingFromSByteTest
• CreateSaturatingFromInt16Test
• CreateTruncatingFromSByteTest
• CreateTruncatingFromInt16Test
• TryCreateFromSByteTest
• TryCreateFromInt16Test

Each failure is due to actual results being positive when it's expected they are negative.

For example:

TryCreateFromSByteTest()

Expected: -128
Actual: 128

Author:	steveisok
Assignees:	-
Labels:	area-System.Runtime
Milestone:	-

[vargaz]

Are these failures with AOT ?

[steveisok]

Are these failures with AOT ?

Yes

Tagging subscribers to 'os-ios': @steveisok, @akoeplinger
See info in area-owners.md if you want to be subscribed.

Issue Details

---

The following generic math tests fail on iOS/tvOS devices:

IntPtrTests:

• CreateSaturatingFromSByteTest
• CreateSaturatingFromInt16Test
• CreateTruncatingFromSByteTest
• CreateTruncatingFromInt16Test
• TryCreateFromSByteTest
• TryCreateFromInt16Test

Each failure is due to actual results being positive when it's expected they are negative.

For example:

TryCreateFromSByteTest()

Expected: -128
Actual: 128

Author:	steveisok
Assignees:	imhameed
Labels:	area-System.Runtime, os-ios
Milestone:	-

[SamMonoRT]

@vargaz - can you tackle this too while you are the other generic math issue ?