user: Demonstrate the C code that generates the assembly output below:

```asm
<bitrv2_32>:
  endbr64
  mov    %rsi,%rax
  movl   $0x0,(%rdi)
  movl   $0x10,0x4(%rdi)
  movss  0x10(%rsi),%xmm1
  movss  0x14(%rsi),%xmm0
  movss  0x20(%rsi),%xmm3
  movss  0x24(%rsi),%xmm2
  movss  %xmm3,0x10(%rsi)
  movss  %xmm2,0x14(%rsi)
  movss  %xmm1,0x20(%rsi)
  movss  %xmm0,0x24(%rsi)
  mov    (%rdi),%edx
  movslq 0x4(%rdi),%rcx
  shl    $0x2,%rcx
  lea    (%rsi,%rcx,1),%r10
  movss  (%r10),%xmm1
  lea    0x4(%rsi,%rcx,1),%r9
  movss  (%r9),%xmm0
  lea    0x2(%rdx),%esi
  movslq %esi,%rsi
  shl    $0x2,%rsi
  lea    (%rax,%rsi,1),%r8
  movss  (%r8),%xmm3
  lea    0x4(%rax,%rsi,1),%rsi
  movss  (%rsi),%xmm2
  movss  %xmm3,(%r10)
  movss  %xmm2,(%r9)
  movss  %xmm1,(%r8)
  movss  %xmm0,(%rsi)
  lea    0x10(%rax,%rcx,1),%r10
  movss  (%r10),%xmm1
  lea    0x14(%rax,%rcx,1),%r9
  movss  (%r9),%xmm0
  add    $0xa,%edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  lea    (%rax,%rdx,1),%r8
  movss  (%r8),%xmm3
  lea    0x4(%rax,%rdx,1),%rsi
  movss  (%rsi),%xmm2
  movss  %xmm3,(%r10)
  movss  %xmm2,(%r9)
  movss  %xmm1,(%r8)
  movss  %xmm0,(%rsi)
  lea    0x20(%rax,%rcx,1),%r10
  movss  (%r10),%xmm1
  lea    0x24(%rax,%rcx,1),%r9
  movss  (%r9),%xmm0
  lea    -0x10(%rax,%rdx,1),%r8
  movss  (%r8),%xmm3
  lea    -0xc(%rax,%rdx,1),%rsi
  movss  (%rsi),%xmm2
  movss  %xmm3,(%r10)
  movss  %xmm2,(%r9)
  movss  %xmm1,(%r8)
  movss  %xmm0,(%rsi)
  lea    0x30(%rax,%rcx,1),%r8
  movss  (%r8),%xmm1
  lea    0x34(%rax,%rcx,1),%rsi
  movss  (%rsi),%xmm0
  lea    0x10(%rax,%rdx,1),%rcx
  movss  (%rcx),%xmm3
  lea    0x14(%rax,%rdx,1),%rdx
  movss  (%rdx),%xmm2
  movss  %xmm3,(%r8)
  movss  %xmm2,(%rsi)
  movss  %xmm1,(%rcx)
  movss  %xmm0,(%rdx)
  mov    0x4(%rdi),%edx
  lea    0x6(%rdx),%ecx
  movslq %ecx,%rcx
  shl    $0x2,%rcx
  lea    (%rax,%rcx,1),%rdi
  movss  (%rdi),%xmm1
  lea    0x4(%rax,%rcx,1),%rsi
  movss  (%rsi),%xmm0
  add    $0xa,%edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  lea    (%rax,%rdx,1),%rcx
  movss  (%rcx),%xmm3
  lea    0x4(%rax,%rdx,1),%rax
  movss  (%rax),%xmm2
  movss  %xmm3,(%rdi)
  movss  %xmm2,(%rsi)
  movss  %xmm1,(%rcx)
  movss  %xmm0,(%rax)
  ret
```

assistant: ```c
void bitrv2_32(int *ip, float *a) {
  const int n = 32;
  int j, j1, k, k1, m, m2;
  float xr, xi, yr, yi;
  ip[0] = 0;
  {
    int l = n;
    m = 1;
    while ((m << 3) < l) {
      l >>= 1;
      for (j = 0; j < m; j++) {
        ip[m + j] = ip[j] + l;
      }
      m <<= 1;
    }
  }
  m2 = 2 * m;
  for (k = 0; k < m; k++) {
    for (j = 0; j < k; j++) {
      j1 = 2 * j + ip[k];
      k1 = 2 * k + ip[j];
      xr = a[j1];
      xi = a[j1 + 1];
      yr = a[k1];
      yi = a[k1 + 1];
      a[j1] = yr;
      a[j1 + 1] = yi;
      a[k1] = xr;
      a[k1 + 1] = xi;
      j1 += m2;
      k1 += 2 * m2;
      xr = a[j1];
      xi = a[j1 + 1];
      yr = a[k1];
      yi = a[k1 + 1];
      a[j1] = yr;
      a[j1 + 1] = yi;
      a[k1] = xr;
      a[k1 + 1] = xi;
      j1 += m2;
      k1 -= m2;
      xr = a[j1];
      xi = a[j1 + 1];
      yr = a[k1];
      yi = a[k1 + 1];
      a[j1] = yr;
      a[j1 + 1] = yi;
      a[k1] = xr;
      a[k1 + 1] = xi;
      j1 += m2;
      k1 += 2 * m2;
      xr = a[j1];
      xi = a[j1 + 1];
      yr = a[k1];
      yi = a[k1 + 1];
      a[j1] = yr;
      a[j1 + 1] = yi;
      a[k1] = xr;
      a[k1 + 1] = xi;
    }
    j1 = 2 * k + m2 + ip[k];
    k1 = j1 + m2;
    xr = a[j1];
    xi = a[j1 + 1];
    yr = a[k1];
    yi = a[k1 + 1];
    a[j1] = yr;
    a[j1 + 1] = yi;
    a[k1] = xr;
    a[k1 + 1] = xi;
  }
}
```