user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<do_linear_regress>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %esi,-0x3c(%rbp)
  mov    %rdx,-0x48(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x24(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x20(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x1c(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x18(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x14(%rbp)
  movl   $0x0,-0x28(%rbp)
  jmp    L25
L3:
  pxor   %xmm0,%xmm0
  cvtsi2ssl -0x28(%rbp),%xmm0
  movss  -0x18(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x18(%rbp)
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movss  -0x14(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x14(%rbp)
  mov    -0x28(%rbp),%eax
  imul   %eax,%eax
  pxor   %xmm0,%xmm0
  cvtsi2ss %eax,%xmm0
  movss  -0x24(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x24(%rbp)
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x20(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x20(%rbp)
  pxor   %xmm1,%xmm1
  cvtsi2ssl -0x28(%rbp),%xmm1
  mov    -0x28(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x1c(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x1c(%rbp)
  addl   $0x1,-0x28(%rbp)
L25:
  mov    -0x28(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jl     L3
  pxor   %xmm1,%xmm1
  cvtsi2ssl -0x3c(%rbp),%xmm1
  movss  -0x18(%rbp),%xmm0
  divss  %xmm1,%xmm0
  movss  %xmm0,-0x18(%rbp)
  pxor   %xmm1,%xmm1
  cvtsi2ssl -0x3c(%rbp),%xmm1
  movss  -0x14(%rbp),%xmm0
  divss  %xmm1,%xmm0
  movss  %xmm0,-0x14(%rbp)
  pxor   %xmm0,%xmm0
  cvtsi2ssl -0x3c(%rbp),%xmm0
  mulss  -0x18(%rbp),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x18(%rbp),%xmm1
  movss  -0x24(%rbp),%xmm0
  subss  %xmm1,%xmm0
  movss  %xmm0,-0x10(%rbp)
  pxor   %xmm0,%xmm0
  cvtsi2ssl -0x3c(%rbp),%xmm0
  mulss  -0x14(%rbp),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x14(%rbp),%xmm1
  movss  -0x20(%rbp),%xmm0
  subss  %xmm1,%xmm0
  movss  %xmm0,-0xc(%rbp)
  pxor   %xmm0,%xmm0
  cvtsi2ssl -0x3c(%rbp),%xmm0
  mulss  -0x18(%rbp),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x14(%rbp),%xmm1
  movss  -0x1c(%rbp),%xmm0
  subss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  pxor   %xmm1,%xmm1
  cvtss2sd -0xc(%rbp),%xmm1
  movsd  D16(%rip),%xmm0
  comisd %xmm1,%xmm0
  jb     L22
  mov    -0x48(%rbp),%rax
  movss  D17(%rip),%xmm0
  movss  %xmm0,(%rax)
L22:
  movss  -0x8(%rbp),%xmm0
  mulss  %xmm0,%xmm0
  movss  -0x10(%rbp),%xmm1
  mulss  -0xc(%rbp),%xmm1
  divss  %xmm1,%xmm0
  movss  %xmm0,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movd   %eax,%xmm0
  call   <sqrt@plt>
  movd   %xmm0,%eax
  movd   %eax,%xmm0
  call   <sqrt@plt>
  movd   %xmm0,%eax
  mov    -0x48(%rbp),%rdx
  mov    %eax,(%rdx)
  nop
  leave
  ret
```

tool_calls: name: read_data
arguments: data_tag: D16
data_type: byte[8]
name: read_data
arguments: data_tag: D17
data_type: byte[4]

tool: {"D16": [0x16,0x56,0xe7,0x9e,0xaf,0x03,0xd2,0x3c]}

tool: {"D17": [0x00,0x00,0x80,0x3f]}

assistant: ```c
void do_linear_regress(float *dbspec, int len, float *r) {
  int i;
  float ssx;
  float ssy;
  float sxy;
  float ssxx;
  float ssyy;
  float ssxy;
  float avx;
  float avy;
  float rsq;
  ssx = 0.0f;
  ssy = 0.0f;
  sxy = 0.0f;
  avx = 0.0f;
  avy = 0.0f;
  for (i = 0; i < len; i++) {
    avx += i;
    avy += dbspec[i];
    ssx += i * i;
    ssy += dbspec[i] * dbspec[i];
    sxy += i * dbspec[i];
  }
  avx /= (float)len;
  avy /= (float)len;
  ssxx = ssx - (float)len * avx * avx;
  ssyy = ssy - (float)len * avy * avy;
  ssxy = sxy - (float)len * avx * avy;
  if (ssyy <= 0.0f + 1e-15) {
    *r = 1.0f;
  }
  rsq = (ssxy * ssxy) / (ssxx * ssyy);
  *r = (float)sqrt(sqrt(rsq));
}
```