user: What would the C source look like for the assembly code provided here:

```asm
<l2norm>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x68,%rsp
  mov    %edi,-0x54(%rbp)
  mov    %esi,-0x58(%rbp)
  mov    %edx,-0x5c(%rbp)
  mov    %ecx,-0x60(%rbp)
  mov    %r8d,-0x64(%rbp)
  mov    %r9d,-0x68(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x20(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x18(%rbp)
  movl   $0x0,-0x3c(%rbp)
  jmp    L88
L26:
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    0x20(%rbp),%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x3c(%rbp)
L88:
  cmpl   $0x4,-0x3c(%rbp)
  jle    L26
  mov    -0x60(%rbp),%eax
  mov    %eax,-0x48(%rbp)
  jmp    L3
L17:
  mov    -0x68(%rbp),%eax
  mov    %eax,-0x44(%rbp)
  jmp    L59
L24:
  movl   $0x1,-0x40(%rbp)
  jmp    L72
L7:
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  movsd  (%rax),%xmm1
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  -0x38(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm1
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  -0x30(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm1
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  -0x28(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm1
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  -0x20(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  add    $0x20,%rax
  movsd  (%rax),%xmm1
  mov    -0x48(%rbp),%eax
  cltq
  imul   $0x29428,%rax,%rdx
  mov    0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    %rdx,%rax
  shl    $0x2,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  imul   $0xa28,%rcx,%rdx
  add    %rdx,%rax
  add    %rsi,%rax
  add    $0x20,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  -0x18(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x18(%rbp)
  addl   $0x1,-0x40(%rbp)
L72:
  mov    -0x5c(%rbp),%eax
  sub    $0x1,%eax
  cmp    %eax,-0x40(%rbp)
  jl     L7
  addl   $0x1,-0x44(%rbp)
L59:
  mov    -0x44(%rbp),%eax
  cmp    0x10(%rbp),%eax
  jle    L24
  addl   $0x1,-0x48(%rbp)
L3:
  mov    -0x48(%rbp),%eax
  cmp    -0x64(%rbp),%eax
  jle    L17
  mov    0x20(%rbp),%rax
  movsd  (%rax),%xmm0
  addsd  -0x38(%rbp),%xmm0
  mov    0x20(%rbp),%rax
  movsd  %xmm0,(%rax)
  mov    0x20(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mov    0x20(%rbp),%rax
  add    $0x8,%rax
  addsd  -0x30(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    0x20(%rbp),%rax
  add    $0x10,%rax
  movsd  (%rax),%xmm0
  mov    0x20(%rbp),%rax
  add    $0x10,%rax
  addsd  -0x28(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    0x20(%rbp),%rax
  add    $0x18,%rax
  movsd  (%rax),%xmm0
  mov    0x20(%rbp),%rax
  add    $0x18,%rax
  addsd  -0x20(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    0x20(%rbp),%rax
  add    $0x20,%rax
  movsd  (%rax),%xmm0
  mov    0x20(%rbp),%rax
  add    $0x20,%rax
  addsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  movl   $0x0,-0x3c(%rbp)
  jmp    L85
L90:
  mov    -0x3c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    0x20(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mov    -0x54(%rbp),%eax
  lea    -0x2(%rax),%edx
  mov    -0x58(%rbp),%eax
  sub    $0x2,%eax
  imul   %edx,%eax
  mov    -0x5c(%rbp),%edx
  sub    $0x2,%edx
  imul   %edx,%eax
  pxor   %xmm1,%xmm1
  cvtsi2sd %eax,%xmm1
  divsd  %xmm1,%xmm0
  movq   %xmm0,%rax
  mov    -0x3c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,8),%rcx
  mov    0x20(%rbp),%rdx
  lea    (%rcx,%rdx,1),%rbx
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  mov    %rax,(%rbx)
  addl   $0x1,-0x3c(%rbp)
L85:
  cmpl   $0x4,-0x3c(%rbp)
  jle    L90
  nop
  nop
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

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)));
  }
}
```