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

```asm
<distance2>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x48(%rbp)
  mov    %rsi,-0x50(%rbp)
  mov    %edx,-0x54(%rbp)
  mov    %ecx,-0x58(%rbp)
  mov    %r8d,-0x5c(%rbp)
  mov    %r9d,-0x60(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x10(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x18(%rbp)
  mov    0x20(%rbp),%eax
  neg    %eax
  mov    %eax,-0x34(%rbp)
  jmp    L140
L38:
  mov    -0x5c(%rbp),%edx
  mov    -0x34(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x20(%rbp)
  mov    0x18(%rbp),%edx
  mov    -0x34(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x1c(%rbp)
  cmpl   $0x0,-0x20(%rbp)
  jns    L157
  negl   -0x20(%rbp)
L157:
  cmpl   $0x0,-0x1c(%rbp)
  jns    L69
  negl   -0x1c(%rbp)
L69:
  mov    -0x20(%rbp),%eax
  cmp    0x38(%rbp),%eax
  jl     L174
  mov    0x38(%rbp),%eax
  add    %eax,%eax
  sub    -0x20(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x20(%rbp)
L174:
  mov    -0x1c(%rbp),%eax
  cmp    0x38(%rbp),%eax
  jl     L115
  mov    0x38(%rbp),%eax
  add    %eax,%eax
  sub    -0x1c(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x1c(%rbp)
L115:
  mov    0x20(%rbp),%eax
  neg    %eax
  mov    %eax,-0x38(%rbp)
  jmp    L24
L105:
  mov    -0x58(%rbp),%edx
  mov    -0x38(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x2c(%rbp)
  mov    0x10(%rbp),%edx
  mov    -0x38(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x24(%rbp)
  cmpl   $0x0,-0x2c(%rbp)
  jns    L93
  negl   -0x2c(%rbp)
L93:
  cmpl   $0x0,-0x24(%rbp)
  jns    L36
  negl   -0x24(%rbp)
L36:
  mov    -0x2c(%rbp),%eax
  cmp    0x30(%rbp),%eax
  jl     L59
  mov    0x30(%rbp),%eax
  add    %eax,%eax
  sub    -0x2c(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x2c(%rbp)
L59:
  mov    -0x24(%rbp),%eax
  cmp    0x30(%rbp),%eax
  jl     L20
  mov    0x30(%rbp),%eax
  add    %eax,%eax
  sub    -0x24(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x24(%rbp)
L20:
  mov    0x20(%rbp),%eax
  neg    %eax
  mov    %eax,-0x3c(%rbp)
  jmp    L124
L125:
  mov    -0x54(%rbp),%edx
  mov    -0x3c(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x30(%rbp)
  mov    -0x60(%rbp),%edx
  mov    -0x3c(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x28(%rbp)
  cmpl   $0x0,-0x30(%rbp)
  jns    L155
  negl   -0x30(%rbp)
L155:
  cmpl   $0x0,-0x28(%rbp)
  jns    L6
  negl   -0x28(%rbp)
L6:
  mov    -0x30(%rbp),%eax
  cmp    0x28(%rbp),%eax
  jl     L26
  mov    0x28(%rbp),%eax
  add    %eax,%eax
  sub    -0x30(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x30(%rbp)
L26:
  mov    -0x28(%rbp),%eax
  cmp    0x28(%rbp),%eax
  jl     L47
  mov    0x28(%rbp),%eax
  add    %eax,%eax
  sub    -0x28(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x28(%rbp)
L47:
  mov    0x28(%rbp),%eax
  imul   0x30(%rbp),%eax
  imul   -0x20(%rbp),%eax
  mov    %eax,%edx
  mov    -0x2c(%rbp),%eax
  imul   0x28(%rbp),%eax
  add    %eax,%edx
  mov    -0x30(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  cvtss2sd %xmm0,%xmm0
  mov    0x28(%rbp),%eax
  imul   0x30(%rbp),%eax
  imul   -0x20(%rbp),%eax
  mov    %eax,%edx
  mov    -0x2c(%rbp),%eax
  imul   0x28(%rbp),%eax
  add    %eax,%edx
  mov    -0x30(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  cvtss2sd %xmm1,%xmm1
  subsd  %xmm1,%xmm0
  mov    0x28(%rbp),%eax
  imul   0x30(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0x24(%rbp),%eax
  imul   0x28(%rbp),%eax
  add    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x48(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  cvtss2sd %xmm1,%xmm1
  mov    0x28(%rbp),%eax
  imul   0x30(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0x24(%rbp),%eax
  imul   0x28(%rbp),%eax
  add    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm2
  cvtss2sd %xmm2,%xmm2
  subsd  %xmm2,%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%rbp)
  movsd  -0x8(%rbp),%xmm0
  mulsd  %xmm0,%xmm0
  movsd  -0x18(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x18(%rbp)
  addl   $0x1,-0x3c(%rbp)
L124:
  mov    -0x3c(%rbp),%eax
  cmp    0x20(%rbp),%eax
  jle    L125
  addl   $0x1,-0x38(%rbp)
L24:
  mov    -0x38(%rbp),%eax
  cmp    0x20(%rbp),%eax
  jle    L105
  addl   $0x1,-0x34(%rbp)
L140:
  mov    -0x34(%rbp),%eax
  cmp    0x20(%rbp),%eax
  jle    L38
  mov    0x20(%rbp),%eax
  add    %eax,%eax
  lea    0x1(%rax),%edx
  mov    0x20(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   %edx,%eax
  mov    0x20(%rbp),%edx
  add    %edx,%edx
  add    $0x1,%edx
  imul   %edx,%eax
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  movsd  %xmm0,-0x10(%rbp)
  movsd  -0x18(%rbp),%xmm0
  divsd  -0x10(%rbp),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  movsd  -0x8(%rbp),%xmm0
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  pop    %rbp
  ret
```

assistant: ```c
double distance2(float *ima, float *medias, int x, int y, int z, int nx, int ny, int nz, int f, int sx, int sy, int sz) {
  double d, acu, distancetotal;
  int i, j, k, ni1, nj1, ni2, nj2, nk1, nk2;
  acu = 0;
  distancetotal = 0;
  for (k = -f; k <= f; k++) {
    nk1 = z + k;
    nk2 = nz + k;
    if (nk1 < 0)
      nk1 = -nk1;
    if (nk2 < 0)
      nk2 = -nk2;
    if (nk1 >= sz)
      nk1 = 2 * sz - nk1 - 1;
    if (nk2 >= sz)
      nk2 = 2 * sz - nk2 - 1;
    for (j = -f; j <= f; j++) {
      nj1 = y + j;
      nj2 = ny + j;
      if (nj1 < 0)
        nj1 = -nj1;
      if (nj2 < 0)
        nj2 = -nj2;
      if (nj1 >= sy)
        nj1 = 2 * sy - nj1 - 1;
      if (nj2 >= sy)
        nj2 = 2 * sy - nj2 - 1;
      for (i = -f; i <= f; i++) {
        ni1 = x + i;
        ni2 = nx + i;
        if (ni1 < 0)
          ni1 = -ni1;
        if (ni2 < 0)
          ni2 = -ni2;
        if (ni1 >= sx)
          ni1 = 2 * sx - ni1 - 1;
        if (ni2 >= sx)
          ni2 = 2 * sx - ni2 - 1;
        d = ((double)ima[nk1 * (sx * sy) + (nj1 * sx) + ni1] - (double)medias[nk1 * (sx * sy) + (nj1 * sx) + ni1]) - ((double)ima[nk2 * (sx * sy) + (nj2 * sx) + ni2] - (double)medias[nk2 * (sx * sy) + (nj2 * sx) + ni2]);
        distancetotal += d * d;
      }
    }
  }
  acu = (2 * f + 1) * (2 * f + 1) * (2 * f + 1);
  d = distancetotal / acu;
  return d;
}
```