Add support for %lc in printf by calling internal wcrtomb function and
relevant end-to-end sprintf test.
Additionally, made the following changes:
- Modified printf parser for recognizing length modifier
- Added two internal error codes.
- Added a flag to disable wchar support on windows platform.
- To keep printf interface header only, converted wcrtomb and
CharacterConverter to header only implementation and removed the cpp
source.
Resolves GPU libc issues in #169983 and original issue: #166598
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Co-authored-by: shubhe25p <shubhp@mbm3a24.local>
Co-authored-by: Joseph Huber <huberjn@outlook.com>
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