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# core::blake::blake2s_compress

The blake2s compress function, which takes a state, a byte count, and a message, and returns a
new state.
`byte_count` should be the total number of bytes hashed after hashing the current `msg`.

## Signature

```rust theme={null}
pub extern fn blake2s_compress(state: Box, byte_count: u32, msg: Box) -> Box nopanic;
```