user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<u2Fit>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x60,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %esi,-0x3c(%rbp)
  mov    %rdx,-0x48(%rbp)
  mov    %rcx,-0x50(%rbp)
  movsd  %xmm0,-0x58(%rbp)
  movsd  %xmm1,-0x60(%rbp)
  mov    %r8d,-0x40(%rbp)
  movsd  -0x60(%rbp),%xmm0
  movapd %xmm0,%xmm1
  subsd  -0x58(%rbp),%xmm1
  mov    -0x40(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,%eax
  test   %rax,%rax
  js     L105
  pxor   %xmm0,%xmm0
  cvtsi2sd %rax,%xmm0
  jmp    L53
L105:
  mov    %rax,%rdx
  shr    %rdx
  and    $0x1,%eax
  or     %rax,%rdx
  pxor   %xmm0,%xmm0
  cvtsi2sd %rdx,%xmm0
  addsd  %xmm0,%xmm0
L53:
  divsd  %xmm0,%xmm1
  movsd  %xmm1,-0x20(%rbp)
  mov    -0x3c(%rbp),%eax
  shl    $0x2,%rax
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x3c(%rbp),%eax
  shl    $0x3,%rax
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x3c(%rbp),%edx
  mov    %edx,%eax
  shl    $0x3,%eax
  add    %edx,%eax
  mov    %eax,%eax
  shl    $0x3,%rax
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  movl   $0x0,-0x2c(%rbp)
  jmp    L92
L43:
  mov    -0x3c(%rbp),%ecx
  mov    -0x10(%rbp),%rdx
  mov    -0x48(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <FDs@plt>
  movl   $0x0,-0x24(%rbp)
  movl   $0x0,-0x28(%rbp)
  jmp    L68
L57:
  mov    -0x28(%rbp),%eax
  lea    0x0(,%rax,8),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  -0x60(%rbp),%xmm0
  comisd %xmm1,%xmm0
  jbe    L112
  mov    -0x28(%rbp),%edx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movb   $0x1,(%rax)
  addl   $0x1,-0x24(%rbp)
  jmp    L12
L112:
  mov    -0x28(%rbp),%edx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
L12:
  addl   $0x1,-0x28(%rbp)
L68:
  mov    -0x28(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jb     L57
  cmpl   $0x7,-0x24(%rbp)
  ja     L139
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x24(%rbp),%eax
  jmp    L126
L139:
  movl   $0x0,-0x24(%rbp)
  movl   $0x0,-0x28(%rbp)
  jmp    L144
L36:
  mov    -0x28(%rbp),%edx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L156
  mov    -0x24(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    %edx,-0x24(%rbp)
  mov    %eax,%eax
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x28(%rbp),%eax
  mov    %eax,(%rdx)
L156:
  addl   $0x1,-0x28(%rbp)
L144:
  mov    -0x28(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jb     L36
  mov    -0x8(%rbp),%rdi
  mov    -0x48(%rbp),%rcx
  mov    -0x24(%rbp),%edx
  mov    -0x18(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    %rdi,%r8
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <u2f@plt>
  movsd  -0x60(%rbp),%xmm0
  subsd  -0x20(%rbp),%xmm0
  movsd  %xmm0,-0x60(%rbp)
  addl   $0x1,-0x2c(%rbp)
L92:
  mov    -0x2c(%rbp),%eax
  cmp    -0x40(%rbp),%eax
  jb     L43
  mov    -0x3c(%rbp),%ecx
  mov    -0x10(%rbp),%rdx
  mov    -0x48(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <FDs@plt>
  movl   $0x0,-0x24(%rbp)
  movl   $0x0,-0x28(%rbp)
  jmp    L90
L132:
  mov    -0x28(%rbp),%eax
  lea    0x0(,%rax,8),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  -0x58(%rbp),%xmm0
  comisd %xmm1,%xmm0
  jbe    L47
  mov    -0x28(%rbp),%edx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movb   $0x1,(%rax)
  addl   $0x1,-0x24(%rbp)
  jmp    L16
L47:
  mov    -0x28(%rbp),%edx
  mov    -0x50(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
L16:
  addl   $0x1,-0x28(%rbp)
L90:
  mov    -0x28(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jb     L132
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x24(%rbp),%eax
L126:
  leave
  ret
```

assistant: ```c
unsigned u2Fit(double *u, unsigned len, double *F, unsigned char *inl, double th, double ths, unsigned iters) {
  double dth = (ths - th) / (iters - 1);
  unsigned iter, i, no_i;
  int *inlI = (int *)malloc(len * sizeof(int));
  double *Ds = (double *)malloc(len * sizeof(double));
  double *buffer = (double *)malloc(9 * len * sizeof(double));
  for (iter = 0; iter < iters; ++iter) {
    FDs(u, F, Ds, len);
    no_i = 0;
    for (i = 0; i < len; ++i) {
      if (Ds[i] < ths) {
        inl[i] = 1;
        ++no_i;
      } else {
        inl[i] = 0;
      }
    }
    if (no_i < 8) {
      free(inlI);
      free(Ds);
      free(buffer);
      return no_i;
    }
    no_i = 0;
    for (i = 0; i < len; ++i) {
      if (inl[i]) {
        inlI[no_i++] = i;
      }
    }
    u2f(u, inlI, no_i, F, buffer);
    ths -= dth;
  }
  FDs(u, F, Ds, len);
  no_i = 0;
  for (i = 0; i < len; ++i) {
    if (Ds[i] < th) {
      inl[i] = 1;
      ++no_i;
    } else {
      inl[i] = 0;
    }
  }
  free(inlI);
  free(Ds);
  free(buffer);
  return no_i;
}
```