bitutils

提供位字段和相关功能

API

bitutils的核心是一个宏，bf!。

语法

bf!(BitfieldName[uXX] {
    field1: lower:upper, // e.g. field1: 0:3, which would encompass the least significant nibble
    field2: 4:6,
    field3: 7:8,
    field5: 9:9,
    // ...
});

用法

let mut bf = BitfieldName::new(0xFFFF);
bf.field1();
bf.set_field2(0x3);
bf.val &= 0xFF;
println!("{:x?}", bf);

bitutils还提供了bits!和bit!宏。

let foo = bits!(0xFFFF, 0:3);
assert_eq!(0xFF, foo);

let bar = bit!(0xF, 7);
assert_eq!(1, bar);