user: Please show me the C implementation that matches the assembly code listed below:

```asm
<levdurb>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %ecx,-0x3c(%rbp)
  mov    -0x28(%rbp),%rax
  movss  D39(%rip),%xmm0
  movss  %xmm0,(%rax)
  mov    -0x38(%rbp),%rax
  movss  (%rax),%xmm1
  movss  D36(%rip),%xmm0
  comiss %xmm1,%xmm0
  jbe    L31
  movl   $0x0,-0x8(%rbp)
  jmp    L8
L48:
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movss  %xmm0,(%rax)
  mov    -0x8(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0x8(%rbp)
L8:
  mov    -0x8(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jl     L48
  jmp    L63
L31:
  mov    -0x38(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm0
  movss  D30(%rip),%xmm1
  xorps  %xmm1,%xmm0
  mov    -0x38(%rbp),%rax
  movss  (%rax),%xmm1
  divss  %xmm1,%xmm0
  mov    -0x30(%rbp),%rax
  movss  %xmm0,(%rax)
  mov    -0x28(%rbp),%rax
  lea    0x4(%rax),%rdx
  mov    -0x30(%rbp),%rax
  movss  (%rax),%xmm0
  movss  %xmm0,(%rdx)
  mov    -0x38(%rbp),%rax
  movss  (%rax),%xmm1
  mov    -0x38(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm2
  mov    -0x30(%rbp),%rax
  movss  (%rax),%xmm0
  mulss  %xmm2,%xmm0
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x10(%rbp)
  movl   $0x1,-0xc(%rbp)
  jmp    L15
L37:
  mov    -0xc(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movss  %xmm0,-0x14(%rbp)
  movl   $0x0,-0x8(%rbp)
  jmp    L7
L68:
  mov    -0x8(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0xc(%rbp),%eax
  sub    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x14(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x14(%rbp)
  addl   $0x1,-0x8(%rbp)
L7:
  mov    -0x8(%rbp),%eax
  cmp    -0xc(%rbp),%eax
  jl     L68
  movss  -0x14(%rbp),%xmm0
  movss  D30(%rip),%xmm1
  xorps  %xmm1,%xmm0
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  divss  -0x10(%rbp),%xmm0
  movss  %xmm0,(%rax)
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mulss  -0x14(%rbp),%xmm0
  movss  -0x10(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x10(%rbp)
  mov    -0xc(%rbp),%eax
  add    $0x1,%eax
  sar    %eax
  mov    %eax,-0x4(%rbp)
  movl   $0x0,-0x8(%rbp)
  jmp    L22
L11:
  mov    -0x8(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm2
  mov    -0xc(%rbp),%eax
  sub    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mulss  %xmm2,%xmm0
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x14(%rbp)
  mov    -0xc(%rbp),%eax
  sub    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm2
  mov    -0x8(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mulss  %xmm2,%xmm0
  mov    -0xc(%rbp),%eax
  sub    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  addss  %xmm1,%xmm0
  movss  %xmm0,(%rax)
  mov    -0x8(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movss  -0x14(%rbp),%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0x8(%rbp)
L22:
  mov    -0x8(%rbp),%eax
  cmp    -0x4(%rbp),%eax
  jl     L11
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rax,%rdx
  mov    -0xc(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  movss  (%rdx),%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0xc(%rbp)
L15:
  mov    -0xc(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jl     L37
L63:
  nop
  pop    %rbp
  ret
```

tool_calls: name: unpack_data
arguments: tag: D39
datatype: byte[4]
name: unpack_data
arguments: tag: D36
datatype: byte[4]
name: unpack_data
arguments: tag: D30
datatype: byte[4]

tool: {"D39": [0x00,0x00,0x80,0x3f]}

tool: {"D36": [0x00,0x00,0x80,0x25]}

tool: {"D30": [0x00,0x00,0x00,0x80]}

assistant: ```c
void levdurb(float *a, float *k, float *r, int order) {
  float sum;
  float alpha;
  int m;
  int m_h;
  int i;
  a[0] = 1.0f;
  if (r[0] < 2.220446049250313e-016f) {
    for (i = 0; i < order; i++) {
      k[i] = 0;
      a[i + 1] = 0;
    }
  } else {
    a[1] = k[0] = -r[1] / r[0];
    alpha = r[0] + r[1] * k[0];
    for (m = 1; m < order; m++) {
      sum = r[m + 1];
      for (i = 0; i < m; i++)
        sum += a[i + 1] * r[m - i];
      k[m] = -sum / alpha;
      alpha += k[m] * sum;
      m_h = (m + 1) >> 1;
      for (i = 0; i < m_h; i++) {
        sum = a[i + 1] + k[m] * a[m - i];
        a[m - i] += k[m] * a[i + 1];
        a[i + 1] = sum;
      }
      a[m + 1] = k[m];
    }
  }
}
```