Function zstd_sys::ZSTD_frameHeaderSize

pub unsafe extern "C" fn ZSTD_frameHeaderSize(
    src: *const c_void, 
    srcSize: usize
) -> usize

ZSTD_frameHeaderSize() : srcSize must be >= ZSTD_FRAMEHEADERSIZE_PREFIX. @return : size of the Frame Header, or an error code (if srcSize is too small)