Man, Jianting (Meco) 8bee7a0c23 [libc] implement extension standard C functions (#6044) %!s(int64=2) %!d(string=hai) anos
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msvc 8bee7a0c23 [libc] implement extension standard C functions (#6044) %!s(int64=2) %!d(string=hai) anos
octal 8bee7a0c23 [libc] implement extension standard C functions (#6044) %!s(int64=2) %!d(string=hai) anos
README.md c318dfa964 improve libc time and MSVC simulator (#5775) %!s(int64=3) %!d(string=hai) anos
SConscript c318dfa964 improve libc time and MSVC simulator (#5775) %!s(int64=3) %!d(string=hai) anos

README.md

Because of the history issue, flags in fcntl.h, such as O_CREAT, have difference types of value. Some OS use hex flags and others use octal flags.

In terms of RT-Thread, Keil, IAR and MSVC use octal flags, which is located in the tcntl/octal folder; newlib uses hex flags; musl uses octal flags.