pushWithStateAssumeCapacity

Standalone function for working with a fixed-size buffer.

Function parameters

Parameters

buf:[]u8
bit_len:*usize
b:u1

Functions in this namespace

Functions

init
deinit
ensureTotalCapacity
push
peek
pop
pushWithStateAssumeCapacity: Standalone function for working with a fixed-size buffer.
peekWithState: Standalone function for working with a fixed-size buffer.
popWithState: Standalone function for working with a fixed-size buffer.

Source

Implementation

pub fn pushWithStateAssumeCapacity(buf: []u8, bit_len: *usize, b: u1) void {
    const byte_index = bit_len.* >> 3;
    const bit_index = @as(u3, @intCast(bit_len.* & 7));

    buf[byte_index] &= ~(@as(u8, 1) << bit_index);
    buf[byte_index] |= @as(u8, b) << bit_index;

    bit_len.* += 1;
}