user: 请将以下的汇编代码转换成C语言代码：

```asm
<l2norm>:
  endbr64
  push   %r15
  mov    %edx,%r11d
  mov    %ecx,%edx
  mov    %esi,%r10d
  push   %r14
  pxor   %xmm4,%xmm4
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    0x60(%rsp),%rbx
  mov    0x50(%rsp),%r12d
  mov    0x58(%rsp),%rcx
  movq   $0x0,(%rbx)
  movq   $0x0,0x8(%rbx)
  movq   $0x0,0x10(%rbx)
  movq   $0x0,0x18(%rbx)
  movq   $0x0,0x20(%rbx)
  cmp    %r8d,%edx
  jg     L74
  mov    %r8d,%eax
  movslq %edx,%rsi
  movapd %xmm4,%xmm2
  mov    %r9d,%ebp
  movapd %xmm4,%xmm3
  movapd %xmm4,%xmm5
  movapd %xmm4,%xmm6
  sub    %edx,%eax
  add    %rsi,%rax
  movslq %r9d,%rdx
  movapd %xmm4,%xmm1
  mov    %r12d,%r9d
  imul   $0x29428,%rax,%rax
  sub    %ebp,%r9d
  imul   $0x29428,%rsi,%r8
  add    %rdx,%r9
  imul   $0xa28,%r9,%r9
  lea    0x29428(%rcx,%rax,1),%r13
  imul   $0xa28,%rdx,%rax
  add    %rcx,%r8
  lea    -0x3(%r11),%ecx
  lea    (%rcx,%rcx,4),%rcx
  add    $0xa50,%r9
  lea    0x28(%rax),%r15
  lea    0x50(%rax,%rcx,8),%r14
  nopw   0x0(%rax,%rax,1)
L31:
  cmp    %r12d,%ebp
  jg     L13
  lea    (%r15,%r8,1),%rcx
  lea    (%r14,%r8,1),%rdx
  lea    (%r9,%r8,1),%rsi
  nopl   0x0(%rax)
L60:
  mov    %rcx,%rax
  cmp    $0x2,%r11d
  jle    L24
  nopl   0x0(%rax)
L23:
  movsd  (%rax),%xmm0
  add    $0x28,%rax
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm1
  movsd  -0x20(%rax),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm6
  movsd  -0x18(%rax),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm5
  movsd  -0x10(%rax),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm3
  movsd  -0x8(%rax),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm2
  cmp    %rdx,%rax
  jne    L23
L24:
  add    $0xa28,%rcx
  add    $0xa28,%rdx
  cmp    %rsi,%rcx
  jne    L60
L13:
  add    $0x29428,%r8
  cmp    %r13,%r8
  jne    L31
  addsd  %xmm4,%xmm1
  addsd  %xmm4,%xmm6
  addsd  %xmm4,%xmm5
  addsd  %xmm4,%xmm3
  addsd  %xmm4,%xmm2
  movapd %xmm1,%xmm0
L91:
  sub    $0x2,%r10d
  lea    -0x2(%rdi),%eax
  sub    $0x2,%r11d
  movsd  %xmm0,(%rbx)
  imul   %r10d,%eax
  pxor   %xmm1,%xmm1
  movsd  %xmm6,0x8(%rbx)
  lea    0x28(%rbx),%rbp
  movsd  %xmm5,0x10(%rbx)
  movsd  %xmm3,0x18(%rbx)
  imul   %r11d,%eax
  movsd  %xmm2,0x20(%rbx)
  cvtsi2sd %eax,%xmm1
  divsd  %xmm1,%xmm0
  ucomisd %xmm0,%xmm4
  ja     L6
L41:
  sqrtsd %xmm0,%xmm0
L19:
  movsd  %xmm0,(%rbx)
  add    $0x8,%rbx
  cmp    %rbx,%rbp
  je     L17
  movsd  (%rbx),%xmm0
  divsd  %xmm1,%xmm0
  ucomisd %xmm0,%xmm4
  jbe    L41
L6:
  movsd  %xmm1,0x8(%rsp)
  call   <sqrt@plt>
  movsd  0x8(%rsp),%xmm1
  pxor   %xmm4,%xmm4
  jmp    L19
  nopl   0x0(%rax,%rax,1)
L17:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L74:
  movapd %xmm4,%xmm2
  movapd %xmm4,%xmm3
  movapd %xmm4,%xmm5
  movapd %xmm4,%xmm6
  movapd %xmm4,%xmm0
  jmp    L91
```

assistant: ```c
void l2norm(int nx0, int ny0, int nz0, int ist, int iend, int jst, int jend, double v[64][64 / 2 * 2 + 1][64 / 2 * 2 + 1][5], double sum[5]) {
  int i, j, k, m;
  double sum0 = 0.0, sum1 = 0.0, sum2 = 0.0, sum3 = 0.0, sum4 = 0.0;
#pragma omp single
  for (m = 0; m < 5; m++) {
    sum[m] = 0.0;
  }
#pragma omp for nowait
  for (i = ist; i <= iend; i++) {
    for (j = jst; j <= jend; j++) {
      for (k = 1; k <= nz0 - 2; k++) {
        sum0 = sum0 + v[i][j][k][0] * v[i][j][k][0];
        sum1 = sum1 + v[i][j][k][1] * v[i][j][k][1];
        sum2 = sum2 + v[i][j][k][2] * v[i][j][k][2];
        sum3 = sum3 + v[i][j][k][3] * v[i][j][k][3];
        sum4 = sum4 + v[i][j][k][4] * v[i][j][k][4];
      }
    }
  }
#pragma omp critical
  {
    sum[0] += sum0;
    sum[1] += sum1;
    sum[2] += sum2;
    sum[3] += sum3;
    sum[4] += sum4;
  }
#pragma omp barrier
#pragma omp single
  for (m = 0; m < 5; m++) {
    sum[m] = sqrt(sum[m] / ((nx0 - 2) * (ny0 - 2) * (nz0 - 2)));
  }
}
```