Finite field elements can be in regular or Montgomery form, and
chaining different operations use to require manual and error-prone
conversions.
Now:
- `add`, `sub` and `mul` convert the second operand to match the
first operand's form
- `sq` and `pow` preserve the input's Montgomery form
- `toPrimitive` and `toBytes` return `UnexpectedRepresentation` if
the element is in Montgomery form, preventing incorrect serialization
This is fully backwards compatible and allows seamless chaining of
operations regardless of their representation.
The vast majority of libc functions return `c_int` for the return value,
when setting errno. This utility function is for those cases.
Other cases can hand-roll the logic, or additional helpers can be added.
IPPROTO_RAW (255) was missing from the Darwin/macOS IPPROTO struct,
even though it is defined in system headers and supported by the platform.
This is a commonly used protocol for raw IP sockets.
We use long calls for these just like thumb*-linux-* to prevent range issues as
the binaries grow larger over time.
We also need function and data sections due to the many __stack_chk_guard
references within the std test binary; without these options, the linker is not
able to insert range thunks in between functions because the std binary just has
one giant .text section that's opaque to the linker.
closes https://codeberg.org/ziglang/zig/issues/30923
If the library isn't actually installed, `generated_bin` will be null,
causing this to panic about a missing dependency for itself; checking
for this state avoids this.
It can fail arbitrarily with ENOENT if the kernel happens to not have the FD in
its name cache. That makes it useless for our purposes.
closes https://codeberg.org/ziglang/zig/issues/30843
Since this is my first time contributing I wanted to keep it simple and I added just one function
I tested with
```bash
stage3/bin/zig build -p stage4 -Dno-lib -Dno-langref -Denable-llvm=true --search-prefix ~/repos/zig-boostrap/out/native-linux-musl-baseline/
stage4/bin/zig build test-libc -Dlibc-test-path=../libc-test -Dtest-target-filter=x86_64-linux-musl
```
and the tests passed.
I'm planning on doing more once I get the hang of it.
Co-authored-by: david <davidc.fried@gmail.com>
Reviewed-on: https://codeberg.org/ziglang/zig/pulls/30888
Reviewed-by: Andrew Kelley <andrew@ziglang.org>
Co-authored-by: Daggerfall-is-the-best-TES-game <daggerfall-is-the-best-tes-game@noreply.codeberg.org>
Co-committed-by: Daggerfall-is-the-best-TES-game <daggerfall-is-the-best-tes-game@noreply.codeberg.org>
Alex Rønne Petersen