user: 这段汇编代码用C语言表示是什么样的？

```asm
<invband_compute>:
  endbr64
  push   %r15
  lea    -0x1(%rdx),%eax
  mov    %rdi,%r8
  push   %r14
  push   %r13
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  mov    %edx,%ebp
  push   %rbx
  mov    %ecx,-0x4(%rsp)
  mov    %eax,-0x8(%rsp)
  test   %edx,%edx
  jle    L114
  movslq %edx,%r11
  movsd  D6(%rip),%xmm3
  mov    %ecx,%r10d
  xor    %edi,%edi
  lea    0x0(,%r11,8),%rsi
  lea    0x1(%rcx),%ecx
  mov    %rsi,%r9
  nopw   0x0(%rax,%rax,1)
L27:
  movsd  (%r12,%rdi,8),%xmm1
  movapd %xmm3,%xmm0
  movapd %xmm1,%xmm2
  mulsd  %xmm1,%xmm2
  divsd  %xmm2,%xmm0
  movsd  %xmm0,(%r8,%rdi,8)
  test   %r10d,%r10d
  js     L65
  movsd  (%r12,%rdi,8),%xmm0
  mov    %r9,%rax
  xor    %edx,%edx
  divsd  %xmm1,%xmm0
  movsd  %xmm0,(%r12,%rdi,8)
  jmp    L81
  nopl   0x0(%rax,%rax,1)
L132:
  movsd  (%r12,%rax,1),%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,(%r12,%rax,1)
  movq   $0x0,(%r8,%rax,1)
  add    %rsi,%rax
L81:
  add    $0x1,%edx
  cmp    %ecx,%edx
  jne    L132
L65:
  add    $0x1,%rdi
  add    $0x8,%r9
  cmp    %r11,%rdi
  jne    L27
L85:
  movslq -0x8(%rsp),%r13
  lea    0x0(%r13,%r11,1),%rax
  shl    $0x3,%r11
  shl    $0x3,%rax
  mov    %rax,-0x10(%rsp)
  cs nopw 0x0(%rax,%rax,1)
L61:
  mov    -0x8(%rsp),%eax
  mov    -0x4(%rsp),%ebx
  sub    %r13d,%eax
  cmp    %ebx,%eax
  cmovg  %ebx,%eax
  mov    %eax,%r10d
  test   %eax,%eax
  jle    L130
  mov    -0x10(%rsp),%rax
  lea    0x1(%r13),%ebx
  lea    0x1(%r10),%r15d
  mov    $0x1,%esi
  lea    (%r8,%rax,1),%r9
  lea    (%r12,%rax,1),%r14
  nopl   (%rax)
L71:
  mov    $0x1,%edx
  movsd  (%r9),%xmm1
  mov    %r14,%rcx
  sub    %esi,%edx
  nopw   0x0(%rax,%rax,1)
L63:
  lea    (%rsi,%rdx,1),%eax
  mov    %ebx,%edi
  cmp    %eax,%esi
  mov    %edx,%eax
  jl     L79
  neg    %eax
  lea    (%rbx,%rdx,1),%edi
L79:
  imul   %ebp,%eax
  add    $0x1,%edx
  add    %edi,%eax
  cltq
  movsd  (%r8,%rax,8),%xmm0
  mulsd  (%rcx),%xmm0
  add    %r11,%rcx
  subsd  %xmm0,%xmm1
  movsd  %xmm1,(%r9)
  cmp    %edx,%r10d
  jne    L63
  lea    0x1(%rsi),%eax
  add    %r11,%r9
  add    $0x1,%ebx
  sub    $0x1,%r10d
  cmp    %eax,%r15d
  je     L124
  mov    %eax,%esi
  jmp    L71
  nopl   0x0(%rax,%rax,1)
L124:
  movsd  (%r8,%r13,8),%xmm1
  mov    -0x10(%rsp),%rax
  mov    $0x1,%edx
L116:
  movsd  (%r12,%rax,1),%xmm0
  mulsd  (%r8,%rax,1),%xmm0
  mov    %edx,%ecx
  add    %r11,%rax
  add    $0x1,%edx
  subsd  %xmm0,%xmm1
  movsd  %xmm1,(%r8,%r13,8)
  cmp    %ecx,%esi
  jne    L116
L130:
  sub    $0x1,%r13
  subq   $0x8,-0x10(%rsp)
  test   %r13d,%r13d
  jns    L61
L68:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L114:
  mov    -0x8(%rsp),%eax
  test   %eax,%eax
  js     L68
  movslq %edx,%r11
  jmp    L85
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D6
datatype: f64

tool: D6: 1

assistant: ```c
void invband_compute(double *dataptr, double *L, int n, int m) {
  int i, j, k;
  int idx, idy;
  double *data, *odata;
  double diag;
  data = dataptr;
  for (i = 0; i < n; i++) {
    diag = L[i];
    data[i] = 1.0 / (diag * diag);
    for (j = 0; j <= m; j++) {
      L[j * n + i] /= diag;
      if (j > 0) {
        data[j * n + i] = 0;
      }
    }
  }
  for (i = n - 1; i >= 0; i--) {
    for (j = 1; j <= (m < n - 1 - i ? m : n - 1 - i); j++) {
      for (k = 1; k <= (n - 1 - i < m ? n - 1 - i : m); k++) {
        idx = (j < k ? k - j : j - k);
        idy = (j < k ? i + j : i + k);
        data[j * n + i] -= L[k * n + i] * data[idx * n + idy];
      }
    }
    for (k = 1; k <= (n - 1 - i < m ? n - 1 - i : m); k++) {
      data[i] -= L[k * n + i] * data[k * n + i];
    }
  }
  return;
}
```