user: 这段汇编代码用C语言表示是什么样的？

```asm
<DOsvdPlane>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %rdi,%rbp
  mov    %esi,%r12d
  mov    %rdx,0x8(%rsp)
  mov    %rcx,%rbx
  mov    $0x3,%esi
  mov    %r12d,%edi
  call   <allocMatrix@plt>
  mov    %rax,%r13
  mov    $0x3,%esi
  mov    $0x3,%edi
  call   <allocMatrix@plt>
  mov    %rax,%r15
  mov    $0x3,%edi
  call   <allocVect@plt>
  mov    %rax,%r14
  cmp    $0x2,%r12d
  setg   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  movss  0x0(%rbp),%xmm0
  movss  %xmm0,(%rbx)
  movss  0x4(%rbp),%xmm0
  movss  %xmm0,0x4(%rbx)
  movss  0x8(%rbp),%xmm0
  movss  %xmm0,0x8(%rbx)
  cmp    $0x1,%r12d
  jle    L2
  lea    0xc(%rbp),%rdx
  lea    (%r12,%r12,2),%esi
  mov    $0x3,%ecx
  jmp    L32
L43:
  add    $0x3,%ecx
  add    $0xc,%rdx
  cmp    %esi,%ecx
  je     L2
L32:
  mov    $0x0,%eax
L82:
  movss  (%rbx,%rax,1),%xmm0
  addss  (%rdx,%rax,1),%xmm0
  movss  %xmm0,(%rbx,%rax,1)
  add    $0x4,%rax
  cmp    $0xc,%rax
  jne    L82
  jmp    L43
L2:
  pxor   %xmm0,%xmm0
  cvtsi2ss %r12d,%xmm0
  movss  (%rbx),%xmm1
  divss  %xmm0,%xmm1
  movss  %xmm1,(%rbx)
  movss  0x4(%rbx),%xmm1
  divss  %xmm0,%xmm1
  movss  %xmm1,0x4(%rbx)
  movss  0x8(%rbx),%xmm1
  divss  %xmm0,%xmm1
  movss  %xmm1,0x8(%rbx)
  lea    -0x1(%r12),%eax
  lea    0x10(%r13,%rax,8),%rdi
  mov    $0x8,%esi
  mov    $0x0,%r8d
L102:
  lea    0x8(%r13),%rax
  mov    %rbp,%rdx
  test   %r12d,%r12d
  jle    L31
L25:
  mov    (%rax),%rcx
  movss  (%rdx),%xmm0
  subss  (%rbx),%xmm0
  cvtss2sd %xmm0,%xmm0
  movsd  %xmm0,(%rcx,%rsi,1)
  add    $0xc,%rdx
  add    $0x8,%rax
  cmp    %rdi,%rax
  jne    L25
L31:
  add    $0x1,%r8d
  add    $0x4,%rbp
  add    $0x4,%rbx
  add    $0x8,%rsi
  cmp    $0x3,%r8d
  jne    L102
  mov    %r15,%r8
  mov    %r14,%rcx
  mov    $0x3,%edx
  mov    %r12d,%esi
  mov    %r13,%rdi
  call   <svdcmp@plt>
  mov    $0x0,%ebx
  mov    D2(%rip),%ebp
  jmp    L37
L85:
  add    $0x1,%rbx
  cmp    $0x3,%rbx
  je     L91
L37:
  movsd  0x8(%r14,%rbx,8),%xmm0
  call   <fabs@plt>
  movd   %ebp,%xmm2
  comiss %xmm0,%xmm2
  jbe    L85
  movsd  0x8(%r14,%rbx,8),%xmm0
  call   <fabs@plt>
  movd   %xmm0,%ebp
  mov    %ebx,0x4(%rsp)
  jmp    L85
L91:
  movslq 0x4(%rsp),%rax
  mov    0x8(%r15),%rdx
  pxor   %xmm0,%xmm0
  cvtsd2ss 0x8(%rdx,%rax,8),%xmm0
  mov    0x8(%rsp),%rdi
  movss  %xmm0,(%rdi)
  mov    0x10(%r15),%rdx
  pxor   %xmm0,%xmm0
  cvtsd2ss 0x8(%rdx,%rax,8),%xmm0
  movss  %xmm0,0x4(%rdi)
  mov    0x18(%r15),%rdx
  pxor   %xmm0,%xmm0
  cvtsd2ss 0x8(%rdx,%rax,8),%xmm0
  movss  %xmm0,0x8(%rdi)
  mov    %r14,%rdi
  call   <freeVect@plt>
  mov    $0x3,%esi
  mov    %r15,%rdi
  call   <freeMatrix@plt>
  mov    %r12d,%esi
  mov    %r13,%rdi
  call   <freeMatrix@plt>
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: parse_data
arguments: label: D2
data_type: byte[4]

tool: {"D2": [0xca,0xf2,0x49,0x71]}

assistant: ```c
void DOsvdPlane(float *pnts, int npnts, float *n, float *base) {
  int i, j;
  double **da = allocMatrix(npnts, 3);
  double **v = allocMatrix(3, 3);
  double *w = allocVect(3);
  float mn = 1E30f;
  int bestat;
  assert(npnts >= 3);
  base[0] = pnts[0];
  base[1] = pnts[1];
  base[2] = pnts[2];
  for (i = 1; i < npnts; i++) {
    for (j = 0; j < 3; j++)
      base[j] += pnts[i * 3 + j];
  }
  base[0] /= (float)(npnts);
  base[1] /= (float)(npnts);
  base[2] /= (float)(npnts);
  for (i = 0; i < 3; i++) {
    for (j = 0; j < npnts; j++)
      da[j + 1][i + 1] = pnts[j * 3 + i] - base[i];
  }
  svdcmp(da, npnts, 3, w, v);
  for (i = 0; i < 3; i++) {
    if (fabs(w[i + 1]) < mn) {
      mn = (float)fabs(w[i + 1]);
      bestat = i;
    }
  }
  n[0] = (float)v[1][bestat + 1];
  n[1] = (float)v[2][bestat + 1];
  n[2] = (float)v[3][bestat + 1];
  freeVect(w);
  freeMatrix(v, 3);
  freeMatrix(da, npnts);
}
```