Added support for sign function in the cwrapper

[anutosh491]

I saw that we didn't have a function basic_sign in the cwrapper and hence thought of it adding it.

[anutosh491]

Hey @rikardn could you help me with the failing test. test_cwrapper runs perfectly on my device (ubuntu 20.04)

[anutosh491]

Hey @isuruf @certik not sure what might be the error with the macos build here. test_cwrapper runs perfectly on my device (ubuntu 20.04). Would you mind having a look at it ?

[lkeegan]

The mac builds are failing because macos-latest is now an M1 arm64 mac instead of an intel one. A quick short-term fix could be to use macos-13 instead of macos-latest to use an intel mac in the CI.

[anutosh491]

Will look into it !
Thanks

[anutosh491]

The issue related with Release-ubuntu-20.04-clang was reported on llvm's repo a couple hours back
llvm/llvm-project#92359
Should we wait for that to be addressed before merging ?

[anutosh491]

The CI is green. I think the Pr is ready @lkeegan @certik

[certik]

The CI must be fixed first, there are some pending tests that didn't run. Trying to fix it in #2019. Feel free to help, so that we get it done quickly, then we rebase this PR and it should cleanly pass.

[certik]

CI should be fixed now, requiring all the right tests to pass.