pub fn check(status: cublasStatus_t, op: &str) -> Result<(), String>Expand description
Map a cublasStatus_t into an Err(String) for the cuBLASLt
status codes we care about. We don’t go through CublasError here
because cudarc’s result module doesn’t expose every variant we
touch — the string form is sufficient since these errors funnel
straight into GpuError::LibraryError.