user: 下面的汇编指令对应的C源代码是什么:

```asm
<sp2fctest>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x90,%rsp
  mov    %rdi,-0x68(%rbp)
  mov    %rsi,-0x70(%rbp)
  mov    %rdx,-0x78(%rbp)
  mov    %ecx,-0x7c(%rbp)
  mov    %r8d,-0x80(%rbp)
  mov    %r9d,-0x84(%rbp)
  mov    0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    0x10(%rbp),%eax
  add    $0x2,%eax
  imul   %edx,%eax
  mov    %eax,-0x4c(%rbp)
  movl   $0x0,-0x5c(%rbp)
  jmp    L79
L36:
  mov    -0x78(%rbp),%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x5c(%rbp),%eax
  imul   -0x84(%rbp),%eax
  imul   -0x80(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x30(%rbp)
  mov    -0x5c(%rbp),%eax
  imul   -0x4c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x68(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x38(%rbp)
  mov    -0x84(%rbp),%eax
  imul   -0x80(%rbp),%eax
  cltq
  shl    $0x3,%eax
  mov    %eax,%edx
  mov    -0x30(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  movl   $0x0,-0x58(%rbp)
  jmp    L73
L3:
  movl   $0x0,-0x54(%rbp)
  jmp    L63
L42:
  mov    -0x54(%rbp),%eax
  add    $0x1,%eax
  cltd
  shr    $0x1f,%edx
  add    %edx,%eax
  and    $0x1,%eax
  sub    %edx,%eax
  add    %eax,%eax
  sub    $0x1,%eax
  mov    %eax,-0x48(%rbp)
  mov    -0x38(%rbp),%rax
  lea    0x8(%rax),%rdx
  mov    %rdx,-0x38(%rbp)
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x38(%rbp),%rax
  lea    0x8(%rax),%rdx
  mov    %rdx,-0x38(%rbp)
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x80(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x10(%rbp)
  movl   $0x0,-0x50(%rbp)
  jmp    L10
L46:
  mov    -0x80(%rbp),%eax
  sub    -0x50(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x44(%rbp)
  mov    -0x50(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x50(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  -0x8(%rbp),%xmm0
  mulsd  -0x28(%rbp),%xmm0
  mov    -0x50(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x50(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  -0x8(%rbp),%xmm0
  mulsd  -0x20(%rbp),%xmm0
  mov    -0x50(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x44(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  -0x8(%rbp),%xmm0
  movapd %xmm0,%xmm2
  mulsd  -0x28(%rbp),%xmm2
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0x48(%rbp),%xmm0
  mulsd  %xmm2,%xmm0
  mov    -0x44(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x44(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  -0x8(%rbp),%xmm0
  movapd %xmm0,%xmm2
  mulsd  -0x20(%rbp),%xmm2
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0x48(%rbp),%xmm0
  mulsd  %xmm2,%xmm0
  mov    -0x44(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x50(%rbp)
L10:
  mov    -0x80(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cmp    %eax,-0x50(%rbp)
  jl     L46
  mov    -0x80(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x40(%rbp)
  addl   $0x1,-0x54(%rbp)
L63:
  mov    0x10(%rbp),%eax
  sub    -0x58(%rbp),%eax
  cmp    %eax,-0x54(%rbp)
  jle    L42
  mov    -0x80(%rbp),%eax
  add    %eax,%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x30(%rbp)
  addl   $0x1,-0x58(%rbp)
L73:
  mov    -0x58(%rbp),%eax
  cmp    0x10(%rbp),%eax
  jle    L3
  addl   $0x1,-0x5c(%rbp)
L79:
  mov    -0x5c(%rbp),%eax
  cmp    -0x7c(%rbp),%eax
  jl     L36
  nop
  nop
  leave
  ret
```

assistant: ```c
void sp2fctest(double *sa, double *fa, double *poli, int nlev, int nlat, int nfc, int nt) {
  int lev, jm, jn, latn, lats, nsp2, is;
  double sar, sai;
  double *far, *fai, *pol;
  double *sal, *fal;
  double pval;
  nsp2 = (nt + 1) * (nt + 2);
  for (lev = 0; lev < nlev; lev++) {
    pol = poli;
    fal = fa + lev * nfc * nlat;
    sal = sa + lev * nsp2;
    memset(fal, 0, nfc * nlat * sizeof(double));
    for (jm = 0; jm <= nt; jm++) {
      for (jn = 0; jn <= nt - jm; jn++) {
        is = (jn + 1) % 2 * 2 - 1;
        sar = *sal++;
        sai = *sal++;
        far = fal;
        fai = fal + nlat;
        for (latn = 0; latn < nlat / 2; latn++) {
          lats = nlat - latn - 1;
          pval = pol[latn];
          far[latn] += pval * sar;
          fai[latn] += pval * sai;
          far[lats] += pval * sar * is;
          fai[lats] += pval * sai * is;
        }
        pol += nlat;
      }
      fal += 2 * nlat;
    }
  }
}
```