# checkasm helper for rust
It is a port of the [dav1d](https://code.videolan.org/videolan/dav1d) checkasm harness to rust.
## Usage
``` rust
#[cfg(test)]
mod test {
use checkasm::declare_fn;
use std::ffi::c_void;
extern fn variant_avx2(a: *mut u8, len: usize);
extern fn variant_avx512(a: *mut u8, len: usize);
declare_fn { check_variant(a: *mut u8, len: usize) };
#[test]
fn variant() {
let mut buf = vec![0u8; 128];
check_variant(variant_avx512 as *mut c_void, buf.as_mut_ptr(), buf.len());
}
}
```
## Status
- [x] builds
- [x] reports errors on stderr
- [ ] panics correctly