user: What would the C source look like for the assembly code provided here?

```asm
<horn_dy>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %rdx,-0x28(%rbp)
  mov    %ecx,-0x2c(%rbp)
  mov    %r8d,-0x30(%rbp)
  movl   $0x0,-0xc(%rbp)
  jmp    L13
L35:
  movl   $0x0,-0x8(%rbp)
  jmp    L7
L60:
  mov    -0xc(%rbp),%eax
  imul   -0x2c(%rbp),%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%edx
  mov    -0x2c(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0x4(%rbp),%edx
  mov    -0x2c(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  addss  %xmm0,%xmm1
  mov    -0x4(%rbp),%edx
  mov    -0x2c(%rbp),%eax
  add    %edx,%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  addss  %xmm0,%xmm1
  mov    -0x4(%rbp),%edx
  mov    -0x2c(%rbp),%eax
  add    %edx,%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  addss  %xmm1,%xmm0
  cvtss2sd %xmm0,%xmm0
  movsd  D11(%rip),%xmm1
  divsd  %xmm1,%xmm0
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm2
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  addss  %xmm1,%xmm2
  mov    -0x4(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  addss  %xmm1,%xmm2
  mov    -0x4(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  addss  %xmm2,%xmm1
  cvtss2sd %xmm1,%xmm1
  movsd  D11(%rip),%xmm2
  divsd  %xmm2,%xmm1
  subsd  %xmm1,%xmm0
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  cvtsd2ss %xmm0,%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0x8(%rbp)
L7:
  mov    -0x2c(%rbp),%eax
  sub    $0x1,%eax
  cmp    %eax,-0x8(%rbp)
  jl     L60
  addl   $0x1,-0xc(%rbp)
L13:
  mov    -0x30(%rbp),%eax
  sub    $0x1,%eax
  cmp    %eax,-0xc(%rbp)
  jl     L35
  movl   $0x0,-0x8(%rbp)
  jmp    L27
L21:
  mov    -0x30(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x2c(%rbp),%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0x8(%rbp)
L27:
  mov    -0x8(%rbp),%eax
  cmp    -0x2c(%rbp),%eax
  jl     L21
  movl   $0x0,-0xc(%rbp)
  jmp    L3
L52:
  mov    -0xc(%rbp),%eax
  imul   -0x2c(%rbp),%eax
  mov    %eax,%edx
  mov    -0x2c(%rbp),%eax
  sub    $0x1,%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0xc(%rbp)
L3:
  mov    -0xc(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jl     L52
  nop
  nop
  pop    %rbp
  ret
```

tool_calls: name: retrieve_data
arguments: tag: D11
data_type: f64

tool: D11: 4

assistant: ```c
void horn_dy(image1, image2, dy, nx, ny) float *image1, *image2, *dy;
int nx, ny;
{
  int index, i, j;
  for (i = 0; i < ny - 1; i++) {
    for (j = 0; j < nx - 1; j++) {
      index = (i * nx) + j;
      dy[index] = ((image1[index + nx] + image2[index + nx] + image1[index + nx + 1] + image2[index + nx + 1]) / 4.0) - ((image1[index] + image2[index] + image1[index + 1] + image2[index + 1]) / 4.0);
    }
  }
  for (j = 0; j < nx; j++) {
    dy[(ny - 1) * nx + j] = 0.0;
  }
  for (i = 0; i < ny; i++) {
    dy[(i * nx) + (nx - 1)] = 0.0;
  }
}
```