user: 请将以下的汇编代码转换成C语言代码：

```asm
<mod_huiliers_area2>:
  endbr64
  push   %r15
  pxor   %xmm3,%xmm3
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x88,%rsp
  mov    %edi,0xc(%rsp)
  mov    %rsi,0x10(%rsp)
  mov    %rdx,0x18(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x78(%rsp)
  xor    %eax,%eax
  cmp    $0x2,%edi
  jg     L70
L28:
  mov    0x78(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L93
  add    $0x88,%rsp
  movapd %xmm3,%xmm0
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  cs nopw 0x0(%rax,%rax,1)
L70:
  lea    0x20(%rsp),%r13
  mov    %rsi,%r15
  mov    %rdx,%rbp
  mov    %edi,%ebx
  mov    %r13,%rdi
  movsd  %xmm3,(%rsp)
  lea    0x8(%r15),%r12
  add    $0x8,%rbp
  call   <lonlat_to_xyz@plt>
  lea    0x40(%rsp),%r14
  movsd  (%r15),%xmm0
  movsd  -0x8(%rbp),%xmm1
  mov    %r14,%rdi
  call   <lonlat_to_xyz@plt>
  lea    -0x2(%rbx),%eax
  movsd  (%rsp),%xmm3
  lea    0x60(%rsp),%rbx
  lea    0x10(%r15,%rax,8),%r15
  nopl   0x0(%rax,%rax,1)
L50:
  movsd  (%r12),%xmm0
  movsd  -0x8(%r12),%xmm2
  movsd  0x0(%rbp),%xmm1
  comisd %xmm0,%xmm2
  ja     L29
  comisd %xmm2,%xmm0
  ja     L29
  movsd  -0x8(%rbp),%xmm2
  comisd %xmm1,%xmm2
  ja     L29
  comisd %xmm2,%xmm1
  jbe    L20
  nop
L29:
  mov    %rbx,%rdi
  movsd  %xmm3,(%rsp)
  call   <lonlat_to_xyz@plt>
  mov    %rbx,%rdx
  mov    %r14,%rsi
  mov    %r13,%rdi
  call   <mod_tri_area@plt>
  pxor   %xmm0,%xmm0
  movsd  (%rsp),%xmm3
  movapd 0x60(%rsp),%xmm4
  cvtsi2sd %rax,%xmm0
  movaps %xmm4,0x40(%rsp)
  addsd  %xmm0,%xmm3
  movsd  0x70(%rsp),%xmm0
  movsd  %xmm0,0x50(%rsp)
L20:
  add    $0x8,%r12
  add    $0x8,%rbp
  cmp    %r15,%r12
  jne    L50
  movslq 0xc(%rsp),%rbp
  mov    0x10(%rsp),%rax
  shl    $0x3,%rbp
  movsd  (%rax),%xmm0
  movsd  -0x8(%rax,%rbp,1),%xmm2
  mov    0x18(%rsp),%rax
  comisd %xmm0,%xmm2
  movsd  (%rax),%xmm1
  ja     L108
  comisd %xmm2,%xmm0
  ja     L108
  movsd  -0x8(%rax,%rbp,1),%xmm2
  comisd %xmm1,%xmm2
  ja     L108
  comisd %xmm2,%xmm1
  jbe    L28
  nopl   0x0(%rax,%rax,1)
L108:
  lea    0x60(%rsp),%r12
  movsd  %xmm3,(%rsp)
  mov    %r12,%rdi
  call   <lonlat_to_xyz@plt>
  mov    %r12,%rdx
  mov    %r14,%rsi
  mov    %r13,%rdi
  call   <mod_tri_area@plt>
  pxor   %xmm0,%xmm0
  movsd  (%rsp),%xmm3
  cvtsi2sd %rax,%xmm0
  addsd  %xmm0,%xmm3
  jmp    L28
L93:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
double mod_huiliers_area2(int num_corners, double *cell_corner_lon, double *cell_corner_lat, double cell_center_lon, double cell_center_lat) {
  if (num_corners < 3)
    return 0;
  double sum = 0.0;
  double pnt1[3], pnt2[3], pnt3[3];
  lonlat_to_xyz(cell_center_lon, cell_center_lat, pnt1);
  lonlat_to_xyz(cell_corner_lon[0], cell_corner_lat[0], pnt2);
  for (int i = 1; i < num_corners; i++) {
    if ((!(cell_corner_lon[i] < cell_corner_lon[i - 1] || cell_corner_lon[i - 1] < cell_corner_lon[i])) && (!(cell_corner_lat[i] < cell_corner_lat[i - 1] || cell_corner_lat[i - 1] < cell_corner_lat[i])))
      continue;
    lonlat_to_xyz(cell_corner_lon[i], cell_corner_lat[i], pnt3);
    sum += mod_tri_area(pnt1, pnt2, pnt3);
    pnt2[0] = pnt3[0];
    pnt2[1] = pnt3[1];
    pnt2[2] = pnt3[2];
  }
  if (!((!(cell_corner_lon[0] < cell_corner_lon[num_corners - 1] || cell_corner_lon[num_corners - 1] < cell_corner_lon[0])) && (!(cell_corner_lat[0] < cell_corner_lat[num_corners - 1] || cell_corner_lat[num_corners - 1] < cell_corner_lat[0])))) {
    lonlat_to_xyz(cell_corner_lon[0], cell_corner_lat[0], pnt3);
    sum += mod_tri_area(pnt1, pnt2, pnt3);
  }
  return (sum);
}
```