user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<uv2dv>:
  endbr64
  push   %r15
  mov    %rcx,%rax
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    0x48(%rsp),%ebx
  mov    0x38(%rsp),%r10d
  mov    0x40(%rsp),%r14d
  lea    0x2(%rbx),%ecx
  mov    %r8,-0x18(%rsp)
  lea    0x1(%rbx),%r8d
  mov    %r9,-0x10(%rsp)
  imul   %r8d,%ecx
  test   %r10d,%r10d
  jle    L92
  movslq %r14d,%r9
  lea    0x0(,%r9,8),%r15
  lea    (%r14,%r14,1),%r9d
  movslq %r9d,%r9
  lea    0x0(,%r9,8),%rbx
  mov    0x48(%rsp),%r9d
  mov    %rbx,-0x58(%rsp)
  test   %r9d,%r9d
  js     L92
  imul   %r14d,%r8d
  mov    %rax,-0x30(%rsp)
  mov    %r14d,%eax
  movslq %ecx,%rcx
  shr    %eax
  mov    %rdi,-0x48(%rsp)
  sub    $0x1,%eax
  mov    %rsi,-0x40(%rsp)
  add    %r8d,%r8d
  add    $0x1,%rax
  mov    %rdx,-0x38(%rsp)
  shl    $0x4,%rax
  movslq %r8d,%r8
  movl   $0x0,-0x4c(%rsp)
  lea    0x0(,%r8,8),%rbx
  mov    %rax,%r13
  mov    %r14d,%eax
  mov    %rbx,-0x28(%rsp)
  and    $0xfffffffe,%eax
  lea    0x0(,%rcx,8),%rbx
  mov    %rbx,-0x20(%rsp)
  mov    %eax,-0x70(%rsp)
L81:
  mov    0x48(%rsp),%eax
  mov    -0x48(%rsp),%rsi
  mov    -0x40(%rsp),%rcx
  mov    -0x38(%rsp),%r12
  mov    %eax,-0x6c(%rsp)
  mov    -0x10(%rsp),%rax
  mov    -0x30(%rsp),%rbp
  mov    %rax,-0x60(%rsp)
  mov    -0x18(%rsp),%rax
  mov    %rax,-0x68(%rsp)
  nopw   0x0(%rax,%rax,1)
L107:
  mov    0x48(%rsp),%eax
  sub    -0x6c(%rsp),%eax
  lea    (%rsi,%r15,1),%r10
  lea    (%rcx,%r15,1),%r9
  mov    %eax,-0x50(%rsp)
  mov    -0x60(%rsp),%r8
  mov    %eax,%ebx
  xor    %r11d,%r11d
  mov    -0x68(%rsp),%rdi
  nopl   0x0(%rax,%rax,1)
L71:
  test   %r14d,%r14d
  jle    L66
  cmp    $0x1,%r14d
  je     L19
  pxor   %xmm5,%xmm5
  xor    %eax,%eax
  movapd %xmm5,%xmm2
  nopl   (%rax)
L40:
  movupd (%rdi,%rax,1),%xmm1
  movupd (%r8,%rax,1),%xmm3
  movupd (%rcx,%rax,1),%xmm0
  movupd (%r10,%rax,1),%xmm4
  movupd (%rsi,%rax,1),%xmm6
  movupd (%r10,%rax,1),%xmm7
  mulpd  %xmm3,%xmm4
  mulpd  %xmm1,%xmm0
  mulpd  %xmm3,%xmm6
  subpd  %xmm4,%xmm0
  movupd (%r9,%rax,1),%xmm4
  mulpd  %xmm1,%xmm4
  addpd  %xmm6,%xmm4
  movapd %xmm0,%xmm6
  unpcklpd %xmm4,%xmm6
  unpckhpd %xmm4,%xmm0
  movupd (%r9,%rax,1),%xmm4
  addpd  %xmm6,%xmm2
  mulpd  %xmm3,%xmm4
  addpd  %xmm0,%xmm2
  movupd (%rsi,%rax,1),%xmm0
  mulpd  %xmm1,%xmm0
  mulpd  %xmm7,%xmm1
  movupd (%rcx,%rax,1),%xmm7
  add    $0x10,%rax
  mulpd  %xmm7,%xmm3
  addpd  %xmm4,%xmm0
  subpd  %xmm3,%xmm1
  movapd %xmm0,%xmm3
  unpcklpd %xmm1,%xmm3
  unpckhpd %xmm1,%xmm0
  subpd  %xmm3,%xmm5
  subpd  %xmm0,%xmm5
  cmp    %rax,%r13
  jne    L40
  movslq -0x70(%rsp),%rax
  cmp    %eax,%r14d
  je     L48
L56:
  movsd  (%rdi,%rax,8),%xmm7
  movsd  (%rsi,%rax,8),%xmm4
  lea    (%r15,%rax,8),%rdx
  movsd  (%rsi,%rdx,1),%xmm8
  movsd  (%r8,%rax,8),%xmm3
  movsd  (%rcx,%rax,8),%xmm9
  movsd  (%rcx,%rdx,1),%xmm1
  movapd %xmm7,%xmm0
  movapd %xmm4,%xmm6
  mulsd  %xmm3,%xmm4
  unpcklpd %xmm8,%xmm6
  unpcklpd %xmm0,%xmm0
  mulpd  %xmm6,%xmm0
  movapd %xmm7,%xmm6
  mulsd  %xmm3,%xmm8
  mulsd  %xmm1,%xmm7
  mulsd  %xmm3,%xmm1
  mulsd  %xmm9,%xmm3
  mulsd  %xmm9,%xmm6
  addsd  %xmm7,%xmm4
  unpcklpd %xmm3,%xmm1
  movapd %xmm0,%xmm3
  subsd  %xmm8,%xmm6
  addpd  %xmm1,%xmm3
  subpd  %xmm1,%xmm0
  unpcklpd %xmm4,%xmm6
  movsd  %xmm3,%xmm0
  addpd  %xmm6,%xmm2
  subpd  %xmm0,%xmm5
L48:
  movups %xmm2,(%r12,%r11,1)
  add    %r15,%rdi
  add    %r15,%r8
  add    $0x1,%ebx
  movups %xmm5,0x0(%rbp,%r11,1)
  add    $0x10,%r11
  cmp    %ebx,0x48(%rsp)
  jge    L71
  mov    -0x6c(%rsp),%ebx
  mov    -0x50(%rsp),%edi
  mov    $0x10,%r11d
  lea    0x1(%rbx),%eax
  mov    %rax,%rdx
  shl    $0x4,%rdx
  cmp    0x48(%rsp),%edi
  cmovg  %r11,%rdx
  add    %rdx,%r12
  add    %rdx,%rbp
  cmp    0x48(%rsp),%edi
  mov    $0x1,%edi
  cmovg  %rdi,%rax
  sub    $0x1,%ebx
  mov    %ebx,-0x6c(%rsp)
  imul   %r15,%rax
  add    %rax,-0x68(%rsp)
  add    %rax,-0x60(%rsp)
  mov    -0x58(%rsp),%rax
  add    %rax,%rsi
  add    %rax,%rcx
  cmp    $0xffffffff,%ebx
  jne    L107
  mov    -0x28(%rsp),%rdi
  addl   $0x1,-0x4c(%rsp)
  add    %rdi,-0x48(%rsp)
  mov    -0x4c(%rsp),%eax
  add    %rdi,-0x40(%rsp)
  mov    -0x20(%rsp),%rdi
  add    %rdi,-0x38(%rsp)
  add    %rdi,-0x30(%rsp)
  cmp    %eax,0x38(%rsp)
  jne    L81
L92:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
L66:
  pxor   %xmm5,%xmm5
  movapd %xmm5,%xmm2
  jmp    L48
L19:
  pxor   %xmm5,%xmm5
  xor    %eax,%eax
  movapd %xmm5,%xmm2
  jmp    L56
```

assistant: ```c
void uv2dv(double *fu, double *fv, double *sd, double *sv, double *pol2, double *pol3, int klev, int nlat, int nt) {
  int lev, jmm, jfc, lat, nfc, nsp2;
  double dir, dii, vor, voi;
  double *ufr, *ufi, *vfr, *vfi;
  double *ful, *fvl, *sdl, *svl;
  double *po2, *po3;
  nsp2 = (nt + 1) * (nt + 2);
  nfc = (nt + 1) * 2;
  for (lev = 0; lev < klev; lev++) {
    po2 = pol2;
    po3 = pol3;
    ful = fu + lev * nfc * nlat;
    fvl = fv + lev * nfc * nlat;
    sdl = sd + lev * nsp2;
    svl = sv + lev * nsp2;
    for (jmm = 0; jmm <= nt; jmm++) {
      for (jfc = jmm; jfc <= nt; jfc++) {
        ufr = ful;
        ufi = ful + nlat;
        vfr = fvl;
        vfi = fvl + nlat;
        dir = 0.0;
        dii = 0.0;
        vor = 0.0;
        voi = 0.0;
        for (lat = 0; lat < nlat; lat++) {
          dir += vfr[lat] * po2[lat] - ufi[lat] * po3[lat];
          dii += vfi[lat] * po2[lat] + ufr[lat] * po3[lat];
          vor -= ufr[lat] * po2[lat] + vfi[lat] * po3[lat];
          voi -= ufi[lat] * po2[lat] - vfr[lat] * po3[lat];
        }
        *sdl++ = dir;
        *sdl++ = dii;
        *svl++ = vor;
        *svl++ = voi;
        po2 += nlat;
        po3 += nlat;
      }
      ful += 2 * nlat;
      fvl += 2 * nlat;
    }
  }
}
```