user: 下面的汇编指令对应的C源代码是什么:

```asm
<ellipse2param>:
  endbr64
  push   %rbp
  mov    %rsi,%rbp
  push   %rbx
  mov    %rdi,%rbx
  sub    $0x58,%rsp
  test   %rdi,%rdi
  je     L85
L35:
  test   %rbp,%rbp
  je     L6
L58:
  movsd  (%rbx),%xmm2
  movsd  0x8(%rbx),%xmm5
  movsd  0x20(%rbx),%xmm3
  movsd  0x10(%rbx),%xmm9
  addsd  %xmm5,%xmm5
  movapd %xmm2,%xmm1
  movsd  0x28(%rbx),%xmm4
  movsd  0x40(%rbx),%xmm6
  subsd  %xmm3,%xmm1
  movsd  %xmm9,0x20(%rsp)
  movsd  %xmm4,0x28(%rsp)
  movapd %xmm5,%xmm0
  movsd  %xmm6,0x30(%rsp)
  movsd  %xmm2,0x18(%rsp)
  movsd  %xmm3,0x10(%rsp)
  movsd  %xmm5,0x8(%rsp)
  call   <atan2@plt>
  lea    0x48(%rsp),%rdi
  lea    0x40(%rsp),%rsi
  movsd  D91(%rip),%xmm8
  mulsd  %xmm0,%xmm8
  movapd %xmm8,%xmm0
  movsd  %xmm8,0x38(%rsp)
  call   <sincos@plt>
  movsd  0x40(%rsp),%xmm4
  mov    $0x0,%edx
  movsd  0x48(%rsp),%xmm1
  movsd  0x8(%rsp),%xmm5
  movsd  0x18(%rsp),%xmm2
  movapd %xmm4,%xmm0
  movapd %xmm1,%xmm7
  movapd %xmm4,%xmm6
  movsd  0x10(%rsp),%xmm3
  mulsd  %xmm1,%xmm0
  mulsd  %xmm1,%xmm7
  movapd %xmm3,%xmm9
  mulsd  %xmm4,%xmm6
  mulsd  %xmm5,%xmm0
  movapd %xmm2,%xmm5
  mulsd  %xmm7,%xmm9
  mulsd  %xmm6,%xmm5
  mulsd  %xmm7,%xmm2
  pxor   %xmm7,%xmm7
  mulsd  %xmm6,%xmm3
  addsd  %xmm9,%xmm5
  addsd  %xmm2,%xmm3
  addsd  %xmm0,%xmm5
  subsd  %xmm0,%xmm3
  ucomisd %xmm7,%xmm5
  setnp  %al
  cmovne %edx,%eax
  test   %al,%al
  jne    L60
  ucomisd %xmm7,%xmm3
  setnp  %dl
  cmove  %edx,%eax
  test   %al,%al
  jne    L60
  movsd  0x20(%rsp),%xmm9
  movsd  0x28(%rsp),%xmm2
  movapd %xmm5,%xmm10
  movq   D52(%rip),%xmm6
  addsd  %xmm5,%xmm10
  movsd  0x38(%rsp),%xmm8
  addsd  %xmm9,%xmm9
  addsd  %xmm2,%xmm2
  movsd  %xmm8,0x8(%rsp)
  movapd %xmm9,%xmm0
  movapd %xmm2,%xmm11
  mulsd  %xmm1,%xmm9
  mulsd  %xmm4,%xmm0
  mulsd  %xmm1,%xmm11
  mulsd  %xmm4,%xmm2
  addsd  %xmm11,%xmm0
  subsd  %xmm9,%xmm2
  movapd %xmm3,%xmm9
  addsd  %xmm3,%xmm9
  xorpd  %xmm6,%xmm0
  divsd  %xmm10,%xmm0
  xorpd  %xmm6,%xmm2
  movapd %xmm1,%xmm10
  divsd  %xmm9,%xmm2
  movapd %xmm4,%xmm9
  mulsd  %xmm0,%xmm1
  mulsd  %xmm0,%xmm9
  mulsd  %xmm2,%xmm4
  mulsd  %xmm2,%xmm10
  addsd  %xmm1,%xmm4
  movapd %xmm5,%xmm1
  mulsd  %xmm0,%xmm1
  subsd  %xmm10,%xmm9
  movsd  %xmm4,0x18(%rsp)
  movsd  %xmm9,0x10(%rsp)
  mulsd  %xmm0,%xmm1
  movsd  0x30(%rsp),%xmm0
  subsd  %xmm1,%xmm0
  movapd %xmm3,%xmm1
  mulsd  %xmm2,%xmm1
  mulsd  %xmm2,%xmm1
  subsd  %xmm1,%xmm0
  movapd %xmm0,%xmm2
  xorpd  %xmm6,%xmm2
  movapd %xmm2,%xmm0
  divsd  %xmm5,%xmm0
  divsd  %xmm3,%xmm2
  comisd %xmm7,%xmm0
  movsd  %xmm2,0x20(%rsp)
  jbe    L98
  mov    D91(%rip),%rax
  movq   %rax,%xmm1
  call   <pow@plt>
  movsd  0x8(%rsp),%xmm8
  pxor   %xmm7,%xmm7
  movsd  0x10(%rsp),%xmm9
  movsd  0x18(%rsp),%xmm4
  movsd  0x20(%rsp),%xmm2
  movapd %xmm0,%xmm3
  movq   D52(%rip),%xmm6
L11:
  comisd %xmm7,%xmm2
  movsd  %xmm4,0x20(%rsp)
  movsd  %xmm9,0x18(%rsp)
  movsd  %xmm8,0x10(%rsp)
  movsd  %xmm3,0x8(%rsp)
  jbe    L71
  mov    D91(%rip),%rax
  movapd %xmm2,%xmm0
  movq   %rax,%xmm1
  call   <pow@plt>
  movsd  0x8(%rsp),%xmm3
  movsd  0x10(%rsp),%xmm8
  movsd  0x18(%rsp),%xmm9
  movsd  0x20(%rsp),%xmm4
  jmp    L23
  nopl   0x0(%rax)
L60:
  movapd %xmm7,%xmm9
  movapd %xmm7,%xmm4
  movapd %xmm7,%xmm3
  movapd %xmm7,%xmm0
  movapd %xmm7,%xmm8
L23:
  movsd  %xmm9,0x0(%rbp)
  movsd  %xmm4,0x8(%rbp)
  movsd  %xmm3,0x10(%rbp)
  movsd  %xmm0,0x18(%rbp)
  movsd  %xmm8,0x20(%rbp)
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  ret
  nopl   0x0(%rax,%rax,1)
L98:
  mov    D91(%rip),%rax
  xorpd  %xmm6,%xmm0
  movq   %rax,%xmm1
  call   <pow@plt>
  movsd  0x20(%rsp),%xmm2
  pxor   %xmm7,%xmm7
  movq   D52(%rip),%xmm6
  movapd %xmm0,%xmm3
  movsd  0x18(%rsp),%xmm4
  movsd  0x10(%rsp),%xmm9
  movsd  0x8(%rsp),%xmm8
  xorpd  %xmm6,%xmm3
  jmp    L11
  nopl   0x0(%rax,%rax,1)
L71:
  mov    D91(%rip),%rax
  xorpd  %xmm6,%xmm2
  movapd %xmm2,%xmm0
  movq   %rax,%xmm1
  call   <pow@plt>
  movq   D52(%rip),%xmm6
  movsd  0x8(%rsp),%xmm3
  movsd  0x10(%rsp),%xmm8
  movsd  0x18(%rsp),%xmm9
  movsd  0x20(%rsp),%xmm4
  xorpd  %xmm6,%xmm0
  jmp    L23
  nopl   0x0(%rax)
L6:
  lea    D8(%rip),%rdi
  call   <error@plt>
  jmp    L58
  nopl   0x0(%rax)
L85:
  lea    D25(%rip),%rdi
  call   <error@plt>
  jmp    L35
```

tool_calls: name: disassemble_data
arguments: data_tag: D91
datatype: f64
name: disassemble_data
arguments: data_tag: D52
datatype: byte[8]
name: disassemble_data
arguments: data_tag: D8
datatype: string
name: disassemble_data
arguments: data_tag: D25
datatype: string

tool: D91: 0.5

tool: {"D52": [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80]}

tool: D8: ellipse2param: output 'param' should be non-null

tool: D25: ellipse2param: null input ellipse matrix.

assistant: ```c
void ellipse2param(double *p, double *param) {
  double a, b, c, d, e, f;
  double thetarad, cost, sint, cos_squared, sin_squared, cos_sin;
  double Ao, Au, Av, Auu, Avv;
  double tuCentre, tvCentre, wCentre, uCentre, vCentre, Ru, Rv;
  if (p == NULL)
    error("ellipse2param: null input ellipse matrix.");
  if (param == NULL)
    error("ellipse2param: output 'param' should be non-null");
  a = p[0];
  b = 2 * p[1];
  c = p[4];
  d = 2 * p[2];
  e = 2 * p[5];
  f = p[8];
  thetarad = 0.5 * atan2(b, a - c);
  cost = cos(thetarad);
  sint = sin(thetarad);
  sin_squared = sint * sint;
  cos_squared = cost * cost;
  cos_sin = sint * cost;
  Ao = f;
  Au = d * cost + e * sint;
  Av = -d * sint + e * cost;
  Auu = a * cos_squared + c * sin_squared + b * cos_sin;
  Avv = a * sin_squared + c * cos_squared - b * cos_sin;
  if ((Auu == 0) || (Avv == 0)) {
    param[0] = 0;
    param[1] = 0;
    param[2] = 0;
    param[3] = 0;
    param[4] = 0;
  } else {
    tuCentre = -Au / (2. * Auu);
    tvCentre = -Av / (2. * Avv);
    wCentre = Ao - Auu * tuCentre * tuCentre - Avv * tvCentre * tvCentre;
    uCentre = tuCentre * cost - tvCentre * sint;
    vCentre = tuCentre * sint + tvCentre * cost;
    Ru = -wCentre / Auu;
    Rv = -wCentre / Avv;
    if (Ru > 0)
      Ru = pow(Ru, 0.5);
    else
      Ru = -pow(-Ru, 0.5);
    if (Rv > 0)
      Rv = pow(Rv, 0.5);
    else
      Rv = -pow(-Rv, 0.5);
    param[0] = uCentre;
    param[1] = vCentre;
    param[2] = Ru;
    param[3] = Rv;
    param[4] = thetarad;
  }
}
```