user: 这段汇编代码用C语言表示是什么样的：

```asm
<cov>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  mov    %r8d,%r13d
  push   %r12
  mov    %rsi,%r12
  xor    %esi,%esi
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,-0x50(%rbp)
  mov    (%rdi),%rdi
  mov    %rdx,-0x48(%rbp)
  mov    %ecx,-0x5c(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  mov    %r8d,%eax
  imul   %r8d,%eax
  lea    0x0(,%rax,8),%edx
  mov    %eax,-0x60(%rbp)
  call   <memset@plt>
  movslq %r13d,%rax
  mov    %rsp,%rcx
  mov    -0x48(%rbp),%r10
  lea    0xf(,%rax,8),%rax
  mov    %rax,%rdx
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rcx
  and    $0xfffffffffffffff0,%rdx
  cmp    %rcx,%rsp
  je     L7
L101:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L101
L7:
  mov    %rdx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  jne    L46
  mov    %rsp,%rbx
  cmp    $0x3,%r13d
  je     L43
L6:
  mov    -0x5c(%rbp),%eax
  test   %eax,%eax
  jle    L57
  mov    -0x5c(%rbp),%eax
  lea    -0x1(%r13),%r15d
  lea    0x8(%rbx,%r15,8),%r14
  sub    $0x1,%eax
  lea    0x8(%r12,%rax,8),%rax
  mov    %rax,-0x58(%rbp)
  xchg   %ax,%ax
L120:
  mov    (%r12),%rsi
  mov    %r10,%rdx
  mov    %r13d,%ecx
  mov    %rbx,%rdi
  mov    %r10,-0x48(%rbp)
  call   <sub@plt>
  test   %r13d,%r13d
  mov    -0x48(%rbp),%r10
  jle    L110
  mov    -0x50(%rbp),%rdi
  mov    %rbx,%rsi
  cs nopw 0x0(%rax,%rax,1)
L116:
  mov    (%rdi),%rdx
  xor    %eax,%eax
  nopl   (%rax)
L90:
  movsd  (%rsi),%xmm0
  mulsd  (%rbx,%rax,8),%xmm0
  mov    %rax,%rcx
  addsd  (%rdx,%rax,8),%xmm0
  movsd  %xmm0,(%rdx,%rax,8)
  add    $0x1,%rax
  cmp    %rcx,%r15
  jne    L90
  add    $0x8,%rsi
  add    $0x8,%rdi
  cmp    %rsi,%r14
  jne    L116
L110:
  add    $0x8,%r12
  cmp    -0x58(%rbp),%r12
  jne    L120
L57:
  mov    -0x50(%rbp),%rax
  mov    (%rax),%rdi
L19:
  pxor   %xmm1,%xmm1
  movsd  D3(%rip),%xmm0
  mov    -0x60(%rbp),%ecx
  mov    %rdi,%rsi
  cvtsi2sdl -0x5c(%rbp),%xmm1
  divsd  %xmm1,%xmm0
  cvttsd2si %xmm0,%edx
  call   <mult@plt>
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L91
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L43:
  mov    -0x50(%rbp),%rax
  mov    -0x5c(%rbp),%esi
  mov    (%rax),%rdi
  test   %esi,%esi
  jle    L19
  mov    0x8(%rax),%rdx
  sub    $0x1,%esi
  mov    0x10(%rax),%rax
  mov    %r12,%rcx
  lea    0x8(%r12,%rsi,8),%rsi
L93:
  mov    (%rcx),%r8
  add    $0x8,%rcx
  movsd  (%r8),%xmm0
  subsd  (%r10),%xmm0
  movsd  %xmm0,(%rbx)
  movsd  0x8(%r8),%xmm1
  subsd  0x8(%r10),%xmm1
  mulsd  %xmm0,%xmm0
  movsd  %xmm1,0x8(%rbx)
  movsd  0x10(%r8),%xmm1
  subsd  0x10(%r10),%xmm1
  movsd  %xmm1,0x10(%rbx)
  addsd  (%rdi),%xmm0
  movsd  %xmm0,(%rdi)
  movsd  (%rbx),%xmm0
  mulsd  0x8(%rbx),%xmm0
  addsd  0x8(%rdi),%xmm0
  movsd  %xmm0,0x8(%rdi)
  movsd  (%rbx),%xmm0
  mulsd  0x10(%rbx),%xmm0
  addsd  0x10(%rdi),%xmm0
  movsd  %xmm0,0x10(%rdi)
  movsd  0x8(%rbx),%xmm0
  mulsd  (%rbx),%xmm0
  addsd  (%rdx),%xmm0
  movsd  %xmm0,(%rdx)
  movsd  0x8(%rbx),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  0x8(%rdx),%xmm0
  movsd  %xmm0,0x8(%rdx)
  movsd  0x8(%rbx),%xmm0
  mulsd  0x10(%rbx),%xmm0
  addsd  0x10(%rdx),%xmm0
  movsd  %xmm0,0x10(%rdx)
  movsd  0x10(%rbx),%xmm0
  mulsd  (%rbx),%xmm0
  addsd  (%rax),%xmm0
  movsd  %xmm0,(%rax)
  movsd  0x10(%rbx),%xmm0
  mulsd  0x8(%rbx),%xmm0
  addsd  0x8(%rax),%xmm0
  movsd  %xmm0,0x8(%rax)
  movsd  0x10(%rbx),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  0x10(%rax),%xmm0
  movsd  %xmm0,0x10(%rax)
  cmp    %rcx,%rsi
  jne    L93
  jmp    L19
L46:
  orq    $0x0,-0x8(%rsp,%rax,1)
  mov    %rsp,%rbx
  cmp    $0x3,%r13d
  jne    L6
  jmp    L43
L91:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: tag: D3
type_guessed: byte[8]

tool: {"D3": [0x00,0x00,0x00,0x00,0x00,0x00,0xf0,0x3f]}

assistant: ```c
void cov(double **S, double **X, double *mu, int n, int m) {
  int i, j, k;
  memset(S[0], 0, m * m * sizeof(double));
  double dx[m];
  if (m == 3) {
    for (i = 0; i < n; i++) {
      dx[0] = X[i][0] - mu[0];
      dx[1] = X[i][1] - mu[1];
      dx[2] = X[i][2] - mu[2];
      S[0][0] += dx[0] * dx[0];
      S[0][1] += dx[0] * dx[1];
      S[0][2] += dx[0] * dx[2];
      S[1][0] += dx[1] * dx[0];
      S[1][1] += dx[1] * dx[1];
      S[1][2] += dx[1] * dx[2];
      S[2][0] += dx[2] * dx[0];
      S[2][1] += dx[2] * dx[1];
      S[2][2] += dx[2] * dx[2];
    }
  } else {
    for (i = 0; i < n; i++) {
      sub(dx, X[i], mu, m);
      for (j = 0; j < m; j++)
        for (k = 0; k < m; k++)
          S[j][k] += dx[j] * dx[k];
    }
  }
  mult(S[0], S[0], 1 / (double)n, m * m);
}
```