user: 请将以下的汇编代码转换成C语言代码:

```asm
<update_cell_2D_quickest_a_lliffe>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x78,%rsp
  mov    %rdi,%rbp
  mov    %rsi,0x40(%rsp)
  mov    %ecx,%r15d
  mov    %r8d,%r14d
  mov    %r9d,%r12d
  mov    0xb0(%rsp),%r13d
  movsd  %xmm0,0x8(%rsp)
  movsd  %xmm1,0x48(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x68(%rsp)
  xor    %eax,%eax
  mov    %r8d,%ebx
  imul   %r9d,%ebx
  add    %ecx,%ebx
  mov    %rdx,0x10(%rsp)
  push   %rdx
  lea    0x58(%rsp),%rax
  mov    %rax,0x20(%rsp)
  push   %rax
  push   %rbx
  push   $0x0
  mov    $0x0,%r9d
  mov    $0x1,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_uface_2d@plt>
  add    $0x20,%rsp
  push   %rbp
  lea    0x60(%rsp),%rcx
  mov    %rcx,0x28(%rsp)
  push   %rcx
  push   %rbx
  push   $0x1
  pxor   %xmm2,%xmm2
  movsd  0x70(%rsp),%xmm1
  movsd  0x28(%rsp),%xmm0
  mov    $0x0,%r9d
  mov    $0x1,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_face_2d_quickest_a_lliffe@plt>
  add    $0x18,%rsp
  push   %rbp
  lea    0x70(%rsp),%rdi
  mov    %rdi,0x38(%rsp)
  push   %rdi
  push   %rbx
  mov    $0x0,%r9d
  mov    $0x1,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_face_grad_2d_lliffe@plt>
  movsd  0x78(%rsp),%xmm0
  mulsd  0x70(%rsp),%xmm0
  pxor   %xmm5,%xmm5
  addsd  %xmm5,%xmm0
  movsd  %xmm0,0x50(%rsp)
  movapd %xmm5,%xmm3
  addsd  0x80(%rsp),%xmm3
  movsd  %xmm3,0x58(%rsp)
  add    $0x20,%rsp
  push   0x10(%rsp)
  push   0x20(%rsp)
  push   %rbx
  push   $0x0
  mov    $0x0,%r9d
  mov    $0xffffffff,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_uface_2d@plt>
  add    $0x20,%rsp
  push   %rbp
  push   0x28(%rsp)
  push   %rbx
  push   $0xffffffffffffffff
  pxor   %xmm2,%xmm2
  movsd  0x70(%rsp),%xmm1
  movsd  0x28(%rsp),%xmm0
  mov    $0x0,%r9d
  mov    $0xffffffff,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_face_2d_quickest_a_lliffe@plt>
  add    $0x18,%rsp
  push   %rbp
  push   0x38(%rsp)
  push   %rbx
  mov    $0x0,%r9d
  mov    $0xffffffff,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_face_grad_2d_lliffe@plt>
  movsd  0x78(%rsp),%xmm0
  mulsd  0x70(%rsp),%xmm0
  movsd  0x50(%rsp),%xmm4
  subsd  %xmm0,%xmm4
  movsd  %xmm4,0x50(%rsp)
  movsd  0x58(%rsp),%xmm3
  addsd  0x80(%rsp),%xmm3
  movsd  %xmm3,0x58(%rsp)
  add    $0x20,%rsp
  push   0x10(%rsp)
  push   0x20(%rsp)
  push   %rbx
  push   $0x1
  mov    $0x1,%r9d
  mov    $0x0,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_uface_2d@plt>
  add    $0x20,%rsp
  push   %rbp
  push   0x28(%rsp)
  push   %rbx
  push   $0x1
  pxor   %xmm2,%xmm2
  movsd  0x70(%rsp),%xmm1
  movsd  0x28(%rsp),%xmm0
  mov    $0x1,%r9d
  mov    $0x0,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_face_2d_quickest_a_lliffe@plt>
  add    $0x18,%rsp
  push   %rbp
  push   0x38(%rsp)
  push   %rbx
  mov    $0x1,%r9d
  mov    $0x0,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_face_grad_2d_lliffe@plt>
  movsd  0x78(%rsp),%xmm0
  mulsd  0x70(%rsp),%xmm0
  addsd  0x50(%rsp),%xmm0
  movsd  %xmm0,0x50(%rsp)
  movsd  0x58(%rsp),%xmm3
  addsd  0x80(%rsp),%xmm3
  movsd  %xmm3,0x58(%rsp)
  add    $0x20,%rsp
  push   0x10(%rsp)
  push   0x20(%rsp)
  push   %rbx
  push   $0x1
  mov    $0xffffffff,%r9d
  mov    $0x0,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_uface_2d@plt>
  add    $0x20,%rsp
  push   %rbp
  push   0x28(%rsp)
  push   %rbx
  push   $0xffffffffffffffff
  pxor   %xmm2,%xmm2
  movsd  0x70(%rsp),%xmm1
  movsd  0x28(%rsp),%xmm0
  mov    $0xffffffff,%r9d
  mov    $0x0,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_face_2d_quickest_a_lliffe@plt>
  add    $0x18,%rsp
  push   %rbp
  push   0x38(%rsp)
  push   %rbx
  mov    $0xffffffff,%r9d
  mov    $0x0,%r8d
  mov    %r13d,%ecx
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <get_face_grad_2d_lliffe@plt>
  movslq %r14d,%r14
  movslq %r15d,%r15
  mov    0x60(%rsp),%rax
  mov    (%rax,%r14,8),%rax
  movsd  0x58(%rsp),%xmm0
  addsd  0x80(%rsp),%xmm0
  mulsd  0x68(%rsp),%xmm0
  movsd  0x78(%rsp),%xmm2
  mulsd  0x70(%rsp),%xmm2
  movsd  0x50(%rsp),%xmm1
  subsd  %xmm2,%xmm1
  subsd  %xmm1,%xmm0
  mulsd  0x28(%rsp),%xmm0
  mov    0x0(%rbp,%r14,8),%rdx
  addsd  (%rdx,%r15,8),%xmm0
  movsd  %xmm0,(%rax,%r15,8)
  add    $0x20,%rsp
  mov    0x68(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L4
  add    $0x78,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L4:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void update_cell_2D_quickest_a_lliffe(double **sc_old, double **sc_new, double *u_buff, int iX, int iY, int nX, int nY, double delta_t, double alpha) {
  int tid;
  double sum_face_a = 0.;
  double sum_face_d = 0.;
  double u_face;
  double u_face_t = 0.;
  double sc_face;
  double sc_face_grad;
  tid = iY * nX + iX;
  get_uface_2d(iX, iY, nX, nY, 1, 0, 0, tid, &u_face, u_buff);
  get_face_2d_quickest_a_lliffe(iX, iY, nX, nY, 1, 0, 1, tid, delta_t, u_face, u_face_t, &sc_face, sc_old);
  get_face_grad_2d_lliffe(iX, iY, nX, nY, 1, 0, tid, &sc_face_grad, sc_old);
  sum_face_a += sc_face * u_face;
  sum_face_d += sc_face_grad;
  get_uface_2d(iX, iY, nX, nY, -1, 0, 0, tid, &u_face, u_buff);
  get_face_2d_quickest_a_lliffe(iX, iY, nX, nY, -1, 0, -1, tid, delta_t, u_face, u_face_t, &sc_face, sc_old);
  get_face_grad_2d_lliffe(iX, iY, nX, nY, -1, 0, tid, &sc_face_grad, sc_old);
  sum_face_a -= sc_face * u_face;
  sum_face_d += sc_face_grad;
  get_uface_2d(iX, iY, nX, nY, 0, 1, 1, tid, &u_face, u_buff);
  get_face_2d_quickest_a_lliffe(iX, iY, nX, nY, 0, 1, 1, tid, delta_t, u_face, u_face_t, &sc_face, sc_old);
  get_face_grad_2d_lliffe(iX, iY, nX, nY, 0, 1, tid, &sc_face_grad, sc_old);
  sum_face_a += sc_face * u_face;
  sum_face_d += sc_face_grad;
  get_uface_2d(iX, iY, nX, nY, 0, -1, 1, tid, &u_face, u_buff);
  get_face_2d_quickest_a_lliffe(iX, iY, nX, nY, 0, -1, -1, tid, delta_t, u_face, u_face_t, &sc_face, sc_old);
  get_face_grad_2d_lliffe(iX, iY, nX, nY, 0, -1, tid, &sc_face_grad, sc_old);
  sum_face_a -= sc_face * u_face;
  sum_face_d += sc_face_grad;
  sc_new[iY][iX] = sc_old[iY][iX] + 1. * delta_t * (1. * alpha * sum_face_d - sum_face_a);
}
```