user: 请将以下的汇编代码转换成C语言代码:

```asm
<xsq_to_stddev>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x70,%rsp
  movsd  %xmm0,-0x48(%rbp)
  movsd  %xmm1,-0x50(%rbp)
  movsd  %xmm2,-0x58(%rbp)
  mov    %rdi,-0x60(%rbp)
  movsd  -0x50(%rbp),%xmm0
  divsd  -0x58(%rbp),%xmm0
  movsd  -0x48(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  movsd  -0x50(%rbp),%xmm0
  movsd  D124(%rip),%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x28(%rbp)
  movsd  -0x48(%rbp),%xmm0
  subsd  -0x28(%rbp),%xmm0
  movsd  %xmm0,-0x68(%rbp)
  movsd  -0x48(%rbp),%xmm0
  movapd %xmm0,%xmm3
  divsd  -0x28(%rbp),%xmm3
  movq   %xmm3,%rax
  movq   %rax,%xmm0
  call   <log@plt>
  movq   %xmm0,%rax
  movq   %rax,%xmm1
  mulsd  -0x28(%rbp),%xmm1
  movsd  -0x68(%rbp),%xmm0
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  pxor   %xmm0,%xmm0
  comisd -0x38(%rbp),%xmm0
  jbe    L2
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x38(%rbp)
L2:
  mov    -0x38(%rbp),%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x20(%rbp)
  movsd  D69(%rip),%xmm0
  divsd  -0x28(%rbp),%xmm0
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  movsd  D29(%rip),%xmm1
  movq   %rax,%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x18(%rbp)
  movsd  -0x28(%rbp),%xmm0
  comisd -0x48(%rbp),%xmm0
  jb     L64
  movsd  -0x18(%rbp),%xmm0
  subsd  -0x20(%rbp),%xmm0
  movsd  %xmm0,-0x40(%rbp)
  jmp    L21
L64:
  movsd  -0x48(%rbp),%xmm0
  movapd %xmm0,%xmm1
  divsd  -0x58(%rbp),%xmm1
  movsd  D124(%rip),%xmm0
  addsd  %xmm0,%xmm1
  movsd  -0x50(%rbp),%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x68(%rbp)
  movsd  -0x48(%rbp),%xmm0
  addsd  -0x58(%rbp),%xmm0
  movq   D43(%rip),%xmm1
  xorpd  %xmm1,%xmm0
  movapd %xmm0,%xmm4
  divsd  -0x50(%rbp),%xmm4
  movq   %xmm4,%rax
  movq   %rax,%xmm0
  call   <exp@plt>
  movsd  D124(%rip),%xmm1
  subsd  %xmm0,%xmm1
  movsd  -0x68(%rbp),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,-0x10(%rbp)
  movsd  -0x58(%rbp),%xmm0
  addsd  %xmm0,%xmm0
  movsd  D124(%rip),%xmm2
  movapd %xmm0,%xmm1
  subsd  %xmm2,%xmm1
  movsd  -0x10(%rbp),%xmm0
  addsd  %xmm0,%xmm0
  subsd  %xmm0,%xmm1
  movsd  %xmm1,-0x68(%rbp)
  movsd  -0x50(%rbp),%xmm0
  divsd  -0x10(%rbp),%xmm0
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  call   <log@plt>
  movsd  -0x68(%rbp),%xmm1
  mulsd  %xmm0,%xmm1
  movsd  -0x10(%rbp),%xmm0
  addsd  %xmm0,%xmm0
  subsd  %xmm0,%xmm1
  movsd  D72(%rip),%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  movsd  D21(%rip),%xmm0
  comisd -0x30(%rbp),%xmm0
  jbe    L8
  movsd  D26(%rip),%xmm0
  movsd  %xmm0,-0x30(%rbp)
L8:
  movsd  -0x30(%rbp),%xmm0
  movsd  D72(%rip),%xmm1
  subsd  %xmm1,%xmm0
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  call   <log@plt>
  movapd %xmm0,%xmm1
  movsd  -0x30(%rbp),%xmm0
  subsd  %xmm1,%xmm0
  movsd  D72(%rip),%xmm1
  subsd  %xmm1,%xmm0
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x8(%rbp)
  movsd  -0x20(%rbp),%xmm0
  addsd  -0x18(%rbp),%xmm0
  comisd -0x8(%rbp),%xmm0
  jbe    L61
  movsd  -0x8(%rbp),%xmm0
  jmp    L10
L61:
  movsd  -0x20(%rbp),%xmm0
  addsd  -0x18(%rbp),%xmm0
L10:
  movsd  %xmm0,-0x40(%rbp)
L21:
  movsd  -0x40(%rbp),%xmm0
  movq   D85(%rip),%xmm1
  andpd  %xmm1,%xmm0
  movsd  %xmm0,-0x68(%rbp)
  movsd  -0x28(%rbp),%xmm0
  movapd %xmm0,%xmm5
  addsd  %xmm0,%xmm5
  movq   %xmm5,%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movsd  -0x58(%rbp),%xmm1
  divsd  %xmm0,%xmm1
  movsd  -0x68(%rbp),%xmm0
  comisd %xmm1,%xmm0
  jbe    L57
  mov    -0x60(%rbp),%rax
  movl   $0x1,(%rax)
  jmp    L44
L57:
  mov    -0x60(%rbp),%rax
  movl   $0x0,(%rax)
L44:
  movsd  -0x40(%rbp),%xmm0
  movq   %xmm0,%rax
  movq   %rax,%xmm0
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: label: D124
type_guessed: f64
name: retrieve_data
arguments: label: D69
type_guessed: f64
name: retrieve_data
arguments: label: D29
type_guessed: f64
name: retrieve_data
arguments: label: D43
type_guessed: f32[2]
name: retrieve_data
arguments: label: D72
type_guessed: f64
name: retrieve_data
arguments: label: D21
type_guessed: f64
name: retrieve_data
arguments: label: D26
type_guessed: f64
name: retrieve_data
arguments: label: D85
type_guessed: qword

tool: D124: 1

tool: D69: 2

tool: D29: 3

tool: {"D43": [0.0,-0.0]}

tool: D72: 1.837877

tool: D21: 2.83

tool: D26: 1000

tool: D85: 9223372036854775807

assistant: ```c
double xsq_to_stddev(xsq, k, n, approx)
double xsq, k, n;
int *approx;
{
  double stddev, v, wsq, w, a, keff, twologp, u;
  xsq = xsq + k / n;
  v = k - 1.0;
  wsq = xsq - v - v * log(xsq / v);
  if (wsq < 0.0)
    wsq = 0.0;
  w = sqrt(wsq);
  a = sqrt(2.0 / v) / 3.0;
  if (xsq <= v) {
    stddev = -w + a;
  } else {
    keff = k / (1.0 + xsq / n) * (1.0 - exp(-(xsq + n) / k));
    twologp = (2.0 * n - 1.0 - 2.0 * keff) * log(k / keff) - 2.0 * keff + 1.837877;
    if (twologp < 2.83)
      twologp = 1000.0;
    u = sqrt(twologp - log(twologp - 1.837877) - 1.837877);
    stddev = (((u) < (w + a)) ? (u) : (w + a));
  }
  if (fabs(stddev) > n / sqrt(2.0 * v)) {
    *approx = 1;
  } else {
    *approx = 0;
  }
  return (stddev);
}
```