Function align_up_to

crates/asm-to-binary/src/assembler/output.rs:197–200

(v: u64, align: u64)

            Ok(i) => i,
            Err(0) => return None,
            Err(i) => i - 1,
        };
        let entry = self.line_table[idx];
        if entry.line == 0 {
            return None;
        }
        self.file_name(entry.file_id)