user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<bitrv1>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %edi,-0x34(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    -0x34(%rbp),%eax
  sar    $0x2,%eax
  mov    %eax,-0x24(%rbp)
  movl   $0x1,-0x20(%rbp)
  jmp    L198
L61:
  sarl   -0x24(%rbp)
  shll   -0x20(%rbp)
L198:
  mov    -0x20(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L61
  mov    -0x20(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jne    L157
  movl   $0x0,-0x2c(%rbp)
  movl   $0x0,-0x28(%rbp)
  jmp    L109
L125:
  mov    -0x28(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,-0x18(%rbp)
  jmp    L29
L99:
  mov    -0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x18(%rbp),%edx
  mov    -0x20(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x10(%rbp)
  mov    -0x20(%rbp),%eax
  lea    (%rax,%rax,1),%edx
  mov    -0x14(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0xc(%rbp)
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x20(%rbp),%eax
  add    %eax,-0x10(%rbp)
  mov    -0x20(%rbp),%eax
  sub    %eax,-0xc(%rbp)
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x20(%rbp),%eax
  add    %eax,-0x10(%rbp)
  mov    -0x20(%rbp),%eax
  add    %eax,%eax
  add    %eax,-0xc(%rbp)
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x34(%rbp),%eax
  sar    %eax
  mov    %eax,-0x1c(%rbp)
  jmp    L49
L177:
  sarl   -0x1c(%rbp)
L49:
  mov    -0x1c(%rbp),%eax
  xor    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L177
  addl   $0x1,-0x18(%rbp)
L29:
  mov    -0x2c(%rbp),%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cmp    %eax,-0x18(%rbp)
  jl     L99
  mov    -0x2c(%rbp),%edx
  mov    -0x28(%rbp),%eax
  add    %eax,%edx
  mov    -0x20(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x10(%rbp)
  mov    -0x10(%rbp),%edx
  mov    -0x20(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0xc(%rbp)
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x34(%rbp),%eax
  sar    %eax
  mov    %eax,-0x1c(%rbp)
  jmp    L80
L121:
  sarl   -0x1c(%rbp)
L80:
  mov    -0x1c(%rbp),%eax
  xor    %eax,-0x2c(%rbp)
  mov    -0x2c(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L121
  addl   $0x1,-0x28(%rbp)
L109:
  mov    -0x28(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jl     L125
  jmp    L195
L157:
  movl   $0x0,-0x2c(%rbp)
  movl   $0x1,-0x28(%rbp)
  jmp    L90
L158:
  mov    -0x34(%rbp),%eax
  sar    %eax
  mov    %eax,-0x1c(%rbp)
  jmp    L5
L106:
  sarl   -0x1c(%rbp)
L5:
  mov    -0x1c(%rbp),%eax
  xor    %eax,-0x2c(%rbp)
  mov    -0x2c(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L106
  mov    -0x28(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x2c(%rbp),%eax
  mov    %eax,-0x18(%rbp)
  jmp    L88
L187:
  mov    -0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x18(%rbp),%edx
  mov    -0x20(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x10(%rbp)
  mov    -0x14(%rbp),%edx
  mov    -0x20(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0xc(%rbp)
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x34(%rbp),%eax
  sar    %eax
  mov    %eax,-0x1c(%rbp)
  jmp    L44
L35:
  sarl   -0x1c(%rbp)
L44:
  mov    -0x1c(%rbp),%eax
  xor    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L35
  addl   $0x1,-0x18(%rbp)
L88:
  mov    -0x2c(%rbp),%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cmp    %eax,-0x18(%rbp)
  jl     L187
  addl   $0x1,-0x28(%rbp)
L90:
  mov    -0x28(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jl     L158
L195:
  nop
  pop    %rbp
  ret
```

assistant: ```c
void bitrv1(int n, double *a) {
  int j0, k0, j1, k1, l, m, i, j, k;
  double x;
  l = n >> 2;
  m = 1;
  while (m < l) {
    l >>= 1;
    m <<= 1;
  }
  if (m == l) {
    j0 = 0;
    for (k0 = 0; k0 < m; k0++) {
      k = k0;
      for (j = j0; j < j0 + k0; j++) {
        x = a[j];
        a[j] = a[k];
        a[k] = x;
        j1 = j + m;
        k1 = k + 2 * m;
        x = a[j1];
        a[j1] = a[k1];
        a[k1] = x;
        j1 += m;
        k1 -= m;
        x = a[j1];
        a[j1] = a[k1];
        a[k1] = x;
        j1 += m;
        k1 += 2 * m;
        x = a[j1];
        a[j1] = a[k1];
        a[k1] = x;
        for (i = n >> 1; i > (k ^= i); i >>= 1)
          ;
      }
      j1 = j0 + k0 + m;
      k1 = j1 + m;
      x = a[j1];
      a[j1] = a[k1];
      a[k1] = x;
      for (i = n >> 1; i > (j0 ^= i); i >>= 1)
        ;
    }
  } else {
    j0 = 0;
    for (k0 = 1; k0 < m; k0++) {
      for (i = n >> 1; i > (j0 ^= i); i >>= 1)
        ;
      k = k0;
      for (j = j0; j < j0 + k0; j++) {
        x = a[j];
        a[j] = a[k];
        a[k] = x;
        j1 = j + m;
        k1 = k + m;
        x = a[j1];
        a[j1] = a[k1];
        a[k1] = x;
        for (i = n >> 1; i > (k ^= i); i >>= 1)
          ;
      }
    }
  }
}
```