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

```asm
<kernel_covariance>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rcx,-0x18(%rsp)
  test   %edi,%edi
  jle    L111
  lea    -0x1(%rsi),%eax
  lea    -0x1(%rdi),%r10d
  movapd %xmm0,%xmm2
  mov    %rdx,%r9
  mov    %eax,-0xc(%rsp)
  lea    0x8(%r8),%r12
  mov    %r10,%r14
  mov    %r8,%rdx
  imul   $0x2580,%rax,%rax
  lea    0x2580(%r9),%r15
  pxor   %xmm3,%xmm3
  lea    (%r12,%r10,8),%r11
  mov    $0xffffffffffffda80,%r10
  lea    (%r15,%rax,1),%rcx
  sub    %rax,%r10
  nopl   0x0(%rax,%rax,1)
L93:
  movq   $0x0,(%rdx)
  test   %esi,%esi
  jle    L91
  lea    (%r10,%rcx,1),%rax
  movapd %xmm3,%xmm0
  nopw   0x0(%rax,%rax,1)
L176:
  addsd  (%rax),%xmm0
  add    $0x2580,%rax
  movsd  %xmm0,(%rdx)
  cmp    %rcx,%rax
  jne    L176
L130:
  divsd  %xmm2,%xmm0
  add    $0x8,%rdx
  add    $0x8,%rcx
  movsd  %xmm0,-0x8(%rdx)
  cmp    %r11,%rdx
  jne    L93
  test   %esi,%esi
  jle    L127
  mov    %edi,%eax
  mov    %edi,%r13d
  mov    %r9,%rdx
  xor    %ebx,%ebx
  shr    %eax
  and    $0xfffffffe,%r13d
  mov    %edi,%ebp
  lea    -0x1(%rax),%r10d
  mov    %r13d,%eax
  movslq %r13d,%rcx
  add    $0x1,%r10
  lea    (%r8,%rax,8),%r11
  shl    $0x4,%r10
  nopl   0x0(%rax)
L20:
  cmp    %rdx,%r12
  je     L174
  xor    %eax,%eax
  cmp    $0x1,%r14d
  jbe    L174
  nopl   (%rax)
L72:
  movupd (%rdx,%rax,1),%xmm0
  movupd (%r8,%rax,1),%xmm4
  subpd  %xmm4,%xmm0
  movups %xmm0,(%rdx,%rax,1)
  add    $0x10,%rax
  cmp    %r10,%rax
  jne    L72
  cmp    %edi,%r13d
  je     L135
  movsd  (%rdx,%rcx,8),%xmm0
  subsd  (%r11),%xmm0
  movsd  %xmm0,(%rdx,%rcx,8)
L135:
  add    $0x1,%ebx
  add    $0x2580,%rdx
  cmp    %ebx,%esi
  jg     L20
L127:
  mov    -0xc(%rsp),%r8d
  subsd  D9(%rip),%xmm2
  xor    %ebx,%ebx
  mov    -0x18(%rsp),%r11
  imul   $0x2580,%r8,%r8
  add    %r15,%r8
  nopl   0x0(%rax)
L158:
  mov    %r11,%r10
  mov    %r11,%rdx
  xor    %ecx,%ecx
L87:
  movq   $0x0,(%rdx)
  test   %esi,%esi
  jle    L161
  mov    %r9,%rax
  movapd %xmm3,%xmm1
  nopw   0x0(%rax,%rax,1)
L59:
  movsd  (%rax),%xmm0
  mulsd  (%rax,%rcx,8),%xmm0
  add    $0x2580,%rax
  addsd  %xmm0,%xmm1
  movsd  %xmm1,(%rdx)
  cmp    %r8,%rax
  jne    L59
L110:
  divsd  %xmm2,%xmm1
  add    $0x1,%rcx
  add    $0x8,%rdx
  add    $0x2580,%r10
  lea    (%rbx,%rcx,1),%eax
  movsd  %xmm1,-0x8(%rdx)
  movsd  %xmm1,-0x2580(%r10)
  cmp    %eax,%edi
  jg     L87
  add    $0x1,%ebx
  add    $0x2588,%r11
  add    $0x8,%r9
  add    $0x8,%r8
  cmp    %ebx,%edi
  jne    L158
L111:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L161:
  movapd %xmm3,%xmm1
  jmp    L110
L174:
  xor    %eax,%eax
L103:
  movsd  (%rdx,%rax,8),%xmm0
  subsd  (%r8,%rax,8),%xmm0
  movsd  %xmm0,(%rdx,%rax,8)
  add    $0x1,%rax
  cmp    %rbp,%rax
  jne    L103
  jmp    L135
L91:
  movapd %xmm3,%xmm0
  jmp    L130
```

tool_calls: name: read_data
arguments: tag: D9
type_guessed: f64

tool: D9: 1

assistant: ```c
void kernel_covariance(int m, int n, double float_n, double data[1400 + 0][1200 + 0], double cov[1200 + 0][1200 + 0], double mean[1200 + 0]) {
  int i, j, k;
#pragma scop
  for (j = 0; j < m; j++) {
    mean[j] = 0.0;
    for (i = 0; i < n; i++)
      mean[j] += data[i][j];
    mean[j] /= float_n;
  }
  for (i = 0; i < n; i++)
    for (j = 0; j < m; j++)
      data[i][j] -= mean[j];
  for (i = 0; i < m; i++)
    for (j = i; j < m; j++) {
      cov[i][j] = 0.0;
      for (k = 0; k < n; k++)
        cov[i][j] += data[k][i] * data[k][j];
      cov[i][j] /= (float_n - 1.0);
      cov[j][i] = cov[i][j];
    }
#pragma endscop
}
```