user: 请将以下的汇编代码转换成C语言代码：

```asm
<key_schedule_stream>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x8(%rbp)
  mov    %rsi,-0x10(%rbp)
  mov    %rdx,-0x18(%rbp)
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%eax
  and    $0xf,%eax
  mov    %eax,%edx
  mov    -0x10(%rbp),%rax
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x10(%rbp),%rax
  add    $0x4,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%edx
  mov    -0x10(%rbp),%rax
  add    $0x8,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x10(%rbp),%rax
  add    $0xc,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x2,%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%edx
  mov    -0x10(%rbp),%rax
  add    $0x10,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x2,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x10(%rbp),%rax
  add    $0x14,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x3,%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%edx
  mov    -0x10(%rbp),%rax
  add    $0x18,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x3,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x10(%rbp),%rax
  add    $0x1c,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x4,%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%eax
  and    $0xf,%eax
  mov    %eax,%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x4,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x18(%rbp),%rax
  add    $0x4,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x5,%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%edx
  mov    -0x18(%rbp),%rax
  add    $0x8,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x5,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x18(%rbp),%rax
  add    $0xc,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x6,%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%edx
  mov    -0x18(%rbp),%rax
  add    $0x10,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x6,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x18(%rbp),%rax
  add    $0x14,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x7,%rax
  movzbl (%rax),%eax
  shr    $0x4,%al
  movzbl %al,%edx
  mov    -0x18(%rbp),%rax
  add    $0x18,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0x7,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x18(%rbp),%rax
  add    $0x1c,%rax
  and    $0xf,%edx
  mov    %edx,(%rax)
  nop
  pop    %rbp
  ret
```

assistant: ```c
void key_schedule_stream(unsigned char *ck, int *iA, int *iB) {
  iA[0] = (ck[0] >> 4) & 0xf;
  iA[1] = (ck[0]) & 0xf;
  iA[2] = (ck[1] >> 4) & 0xf;
  iA[3] = (ck[1]) & 0xf;
  iA[4] = (ck[2] >> 4) & 0xf;
  iA[5] = (ck[2]) & 0xf;
  iA[6] = (ck[3] >> 4) & 0xf;
  iA[7] = (ck[3]) & 0xf;
  iB[0] = (ck[4] >> 4) & 0xf;
  iB[1] = (ck[4]) & 0xf;
  iB[2] = (ck[5] >> 4) & 0xf;
  iB[3] = (ck[5]) & 0xf;
  iB[4] = (ck[6] >> 4) & 0xf;
  iB[5] = (ck[6]) & 0xf;
  iB[6] = (ck[7] >> 4) & 0xf;
  iB[7] = (ck[7]) & 0xf;
}
```