user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<target_phi>:
  endbr64
  push   %rbx
  pxor   %xmm0,%xmm0
  mov    %rsi,%rbx
  sub    $0xb0,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0xa8(%rsp)
  xor    %eax,%eax
  movaps %xmm0,0x80(%rsp)
  test   %edx,%edx
  jle    L67
  movss  D418(%rip),%xmm5
  cmp    $0x1,%edx
  je     L83
  movss  %xmm5,0x84(%rsp)
  cmp    $0x2,%edx
  je     L83
  movl   $0x3d638e39,0x88(%rsp)
  cmp    $0x3,%edx
  je     L83
  movl   $0x3d638afd,0x8c(%rsp)
L83:
  movss  0x84(%rsp),%xmm6
  pxor   %xmm9,%xmm9
  movss  0x88(%rsp),%xmm3
  movss  0x8c(%rsp),%xmm0
L54:
  movss  D277(%rip),%xmm1
  movss  (%rdi),%xmm4
  movss  0x4(%rdi),%xmm2
  movss  D316(%rip),%xmm7
  movss  D8(%rip),%xmm15
  subss  %xmm1,%xmm4
  movss  D255(%rip),%xmm13
  movss  D269(%rip),%xmm11
  subss  %xmm1,%xmm2
  movss  0x8(%rdi),%xmm1
  subss  D314(%rip),%xmm1
  mulss  %xmm5,%xmm4
  mulss  %xmm6,%xmm2
  mulss  %xmm3,%xmm1
  mulss  0x8(%rbx),%xmm3
  mulss  (%rbx),%xmm5
  addss  %xmm7,%xmm4
  mulss  0x4(%rbx),%xmm6
  addss  %xmm7,%xmm2
  addss  %xmm7,%xmm1
  mulss  %xmm4,%xmm13
  movss  %xmm3,0x28(%rsp)
  movss  0xc(%rdi),%xmm3
  subss  D217(%rip),%xmm3
  mulss  %xmm2,%xmm15
  movaps %xmm2,%xmm10
  movaps %xmm4,%xmm8
  mulss  %xmm2,%xmm10
  movaps %xmm1,%xmm12
  mulss  %xmm1,%xmm12
  mulss  %xmm0,%xmm3
  movss  %xmm13,0x14(%rsp)
  mulss  0xc(%rbx),%xmm0
  movaps %xmm1,%xmm13
  movss  %xmm15,0x10(%rsp)
  mulss  %xmm4,%xmm8
  movss  D97(%rip),%xmm15
  mulss  %xmm4,%xmm11
  mulss  %xmm12,%xmm13
  mulss  D68(%rip),%xmm13
  addss  %xmm7,%xmm3
  mulss  %xmm1,%xmm15
  movaps %xmm0,%xmm14
  movss  D312(%rip),%xmm0
  mulss  %xmm4,%xmm0
  movaps %xmm3,%xmm7
  mulss  %xmm3,%xmm7
  movss  %xmm13,0x1c(%rsp)
  movss  D32(%rip),%xmm13
  movss  %xmm15,0x18(%rsp)
  movss  D138(%rip),%xmm15
  mulss  %xmm10,%xmm13
  mulss  %xmm2,%xmm15
  movss  %xmm0,0xc(%rsp)
  movaps %xmm4,%xmm0
  mulss  %xmm8,%xmm0
  mulss  D341(%rip),%xmm0
  movss  %xmm13,0x34(%rsp)
  mulss  %xmm1,%xmm13
  movss  %xmm15,0x2c(%rsp)
  mulss  %xmm1,%xmm15
  movss  %xmm0,0x20(%rsp)
  movss  %xmm13,0x38(%rsp)
  mulss  %xmm3,%xmm13
  movss  %xmm15,0x30(%rsp)
  movss  D191(%rip),%xmm0
  mulss  %xmm3,%xmm15
  addss  %xmm11,%xmm0
  movss  D210(%rip),%xmm11
  mulss  %xmm1,%xmm11
  addss  %xmm0,%xmm11
  movss  0xc(%rsp),%xmm0
  mulss  %xmm2,%xmm0
  addss  %xmm11,%xmm0
  movss  0x10(%rsp),%xmm11
  mulss  %xmm1,%xmm11
  addss  %xmm0,%xmm11
  movss  0x14(%rsp),%xmm0
  mulss  %xmm3,%xmm0
  addss  %xmm11,%xmm0
  movss  0x18(%rsp),%xmm11
  mulss  %xmm3,%xmm11
  addss  %xmm0,%xmm11
  movss  D179(%rip),%xmm0
  mulss  %xmm2,%xmm0
  addss  %xmm11,%xmm0
  movss  D458(%rip),%xmm11
  mulss  %xmm3,%xmm11
  addss  %xmm0,%xmm11
  movss  D301(%rip),%xmm0
  mulss  %xmm4,%xmm0
  mulss  %xmm7,%xmm0
  addss  %xmm11,%xmm0
  movss  0x1c(%rsp),%xmm11
  mulss  %xmm3,%xmm11
  addss  %xmm0,%xmm11
  movss  D261(%rip),%xmm0
  mulss  %xmm4,%xmm0
  mulss  %xmm10,%xmm0
  addss  %xmm11,%xmm0
  movss  D78(%rip),%xmm11
  mulss  %xmm1,%xmm11
  addss  %xmm15,%xmm0
  movss  D435(%rip),%xmm15
  mulss  %xmm2,%xmm15
  mulss  %xmm7,%xmm11
  movss  %xmm15,0x3c(%rsp)
  mulss  %xmm1,%xmm15
  addss  %xmm0,%xmm11
  movss  0x20(%rsp),%xmm0
  mulss  %xmm2,%xmm0
  addss  %xmm11,%xmm0
  movss  D186(%rip),%xmm11
  mulss  %xmm4,%xmm11
  addss  %xmm13,%xmm0
  movaps %xmm11,%xmm13
  mulss  %xmm2,%xmm13
  movss  %xmm13,0x24(%rsp)
  movaps %xmm15,%xmm13
  mulss  %xmm7,%xmm13
  addss  %xmm0,%xmm13
  movss  0x24(%rsp),%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm13,%xmm0
  movss  D112(%rip),%xmm13
  mulss  %xmm2,%xmm13
  mulss  %xmm12,%xmm13
  addss  %xmm13,%xmm0
  movss  D279(%rip),%xmm13
  mulss  %xmm8,%xmm13
  movaps %xmm13,%xmm15
  mulss  %xmm2,%xmm15
  movss  %xmm15,0x40(%rsp)
  mulss  %xmm1,%xmm15
  addss  %xmm0,%xmm15
  movaps %xmm5,%xmm0
  addss  %xmm9,%xmm0
  addss  %xmm6,%xmm0
  addss  0x28(%rsp),%xmm0
  addss  %xmm14,%xmm0
  ucomiss %xmm9,%xmm0
  jp     L81
  movaps %xmm9,%xmm0
  jne    L81
L30:
  movss  %xmm0,(%rbx)
  mov    0xa8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L50
  add    $0xb0,%rsp
  movaps %xmm15,%xmm0
  pop    %rbx
  ret
  nopl   0x0(%rax)
L81:
  movss  %xmm6,0x48(%rsp)
  mulss  %xmm5,%xmm5
  movss  D255(%rip),%xmm6
  movss  D312(%rip),%xmm0
  mulss  D261(%rip),%xmm10
  mov    $0x2,%edi
  movss  %xmm15,0x7c(%rsp)
  mulss  %xmm3,%xmm6
  movss  %xmm14,0x74(%rsp)
  mulss  %xmm2,%xmm0
  movss  %xmm9,0x5c(%rsp)
  subss  D457(%rip),%xmm0
  movss  %xmm12,0x78(%rsp)
  mulss  D154(%rip),%xmm8
  movss  %xmm5,0x44(%rsp)
  movss  %xmm13,0x70(%rsp)
  movaps %xmm6,%xmm5
  movaps %xmm4,%xmm6
  movss  %xmm11,0x6c(%rsp)
  addss  %xmm0,%xmm5
  movss  D301(%rip),%xmm0
  mulss  D454(%rip),%xmm6
  movss  %xmm3,0x58(%rsp)
  mulss  %xmm2,%xmm8
  movss  %xmm7,0x68(%rsp)
  mulss  %xmm7,%xmm0
  movss  %xmm4,0x54(%rsp)
  movss  %xmm2,0x50(%rsp)
  movss  %xmm1,0x4c(%rsp)
  addss  %xmm5,%xmm0
  movaps %xmm6,%xmm5
  mulss  %xmm2,%xmm5
  addss  %xmm0,%xmm10
  movss  D186(%rip),%xmm0
  mulss  %xmm2,%xmm0
  addss  %xmm10,%xmm8
  mulss  %xmm1,%xmm5
  mulss  %xmm1,%xmm0
  addss  %xmm8,%xmm0
  addss  %xmm5,%xmm0
  call   <pow@plt>
  movss  0x4c(%rsp),%xmm1
  mov    $0x2,%edi
  movss  D8(%rip),%xmm5
  movss  0x5c(%rsp),%xmm9
  mulss  0x44(%rsp),%xmm0
  movss  0xc(%rsp),%xmm4
  mulss  %xmm1,%xmm5
  movss  0x50(%rsp),%xmm2
  movss  0x58(%rsp),%xmm3
  movss  0x68(%rsp),%xmm7
  movss  %xmm9,0x64(%rsp)
  addss  %xmm9,%xmm4
  movss  0x6c(%rsp),%xmm11
  movss  0x78(%rsp),%xmm12
  movss  %xmm2,0x5c(%rsp)
  movss  0x70(%rsp),%xmm13
  movss  0x48(%rsp),%xmm6
  movss  %xmm0,0x44(%rsp)
  mulss  %xmm1,%xmm11
  mulss  %xmm1,%xmm13
  movaps %xmm4,%xmm0
  movss  0x54(%rsp),%xmm4
  movss  %xmm12,0x50(%rsp)
  addss  %xmm5,%xmm0
  movss  D374(%rip),%xmm5
  mulss  %xmm6,%xmm6
  subss  D61(%rip),%xmm0
  movss  %xmm4,0x60(%rsp)
  mulss  %xmm2,%xmm5
  movss  %xmm7,0x54(%rsp)
  movss  %xmm6,0x48(%rsp)
  mulss  %xmm4,%xmm5
  movss  D138(%rip),%xmm4
  mulss  %xmm1,%xmm4
  addss  %xmm0,%xmm5
  movaps %xmm4,%xmm0
  movaps %xmm2,%xmm4
  movss  D112(%rip),%xmm2
  mulss  %xmm3,%xmm0
  mulss  D2(%rip),%xmm4
  mulss  %xmm12,%xmm2
  addss  %xmm5,%xmm0
  movss  0x20(%rsp),%xmm5
  addss  %xmm0,%xmm5
  movaps %xmm4,%xmm0
  mulss  %xmm1,%xmm0
  mulss  %xmm3,%xmm0
  addss  %xmm5,%xmm0
  movss  D435(%rip),%xmm5
  mulss  %xmm1,%xmm5
  mulss  %xmm7,%xmm5
  addss  %xmm0,%xmm5
  movaps %xmm2,%xmm0
  addss  %xmm5,%xmm11
  addss  %xmm11,%xmm0
  addss  %xmm13,%xmm0
  call   <pow@plt>
  mulss  0x48(%rsp),%xmm0
  movss  0x44(%rsp),%xmm7
  mov    $0x2,%edi
  movss  0x58(%rsp),%xmm3
  movss  D210(%rip),%xmm5
  addss  0x10(%rsp),%xmm5
  movss  0x50(%rsp),%xmm12
  movss  0x4c(%rsp),%xmm1
  movss  0x5c(%rsp),%xmm2
  movss  0x28(%rsp),%xmm6
  addss  %xmm0,%xmm7
  movss  D97(%rip),%xmm0
  movss  %xmm1,0x28(%rsp)
  mulss  %xmm6,%xmm6
  mulss  %xmm3,%xmm0
  movss  %xmm7,0xc(%rsp)
  movss  0x54(%rsp),%xmm7
  movss  %xmm6,0x20(%rsp)
  addss  %xmm5,%xmm0
  movss  D334(%rip),%xmm5
  mulss  %xmm12,%xmm5
  movss  0x3c(%rsp),%xmm12
  mulss  %xmm7,%xmm12
  mulss  %xmm3,%xmm5
  addss  %xmm5,%xmm0
  movss  0x2c(%rsp),%xmm5
  movss  %xmm3,0x2c(%rsp)
  mulss  %xmm3,%xmm5
  addss  %xmm0,%xmm5
  movss  D78(%rip),%xmm0
  mulss  %xmm7,%xmm0
  addss  %xmm5,%xmm0
  movss  0x34(%rsp),%xmm5
  mulss  %xmm3,%xmm5
  addss  %xmm0,%xmm5
  movaps %xmm1,%xmm0
  mulss  D35(%rip),%xmm0
  addss  %xmm12,%xmm5
  addss  0x24(%rsp),%xmm5
  movss  %xmm2,0x24(%rsp)
  mulss  %xmm2,%xmm0
  addss  %xmm0,%xmm5
  movss  0x40(%rsp),%xmm0
  addss  %xmm5,%xmm0
  call   <pow@plt>
  movss  0x2c(%rsp),%xmm3
  movss  D439(%rip),%xmm5
  mov    $0x2,%edi
  mulss  0x20(%rsp),%xmm0
  movss  0x64(%rsp),%xmm9
  mulss  %xmm3,%xmm5
  addss  0xc(%rsp),%xmm0
  movss  0x14(%rsp),%xmm7
  movss  0x60(%rsp),%xmm4
  movss  0x24(%rsp),%xmm2
  addss  %xmm9,%xmm7
  movss  0x28(%rsp),%xmm1
  movss  0x74(%rsp),%xmm14
  movss  %xmm0,0xc(%rsp)
  movss  0x18(%rsp),%xmm0
  mulss  %xmm14,%xmm14
  mulss  %xmm5,%xmm4
  addss  %xmm7,%xmm0
  addss  D458(%rip),%xmm0
  movss  %xmm14,0x10(%rsp)
  addss  %xmm4,%xmm0
  movss  D174(%rip),%xmm4
  addss  0x1c(%rsp),%xmm0
  addss  0x30(%rsp),%xmm0
  mulss  %xmm3,%xmm4
  mulss  D371(%rip),%xmm3
  mulss  %xmm1,%xmm4
  mulss  %xmm2,%xmm3
  addss  %xmm4,%xmm0
  addss  0x38(%rsp),%xmm0
  mulss  %xmm1,%xmm3
  addss  %xmm3,%xmm0
  call   <pow@plt>
  mulss  0x10(%rsp),%xmm0
  addss  0xc(%rsp),%xmm0
  call   <sqrt@plt>
  movss  0x7c(%rsp),%xmm15
  jmp    L30
  nopl   (%rax)
L67:
  pxor   %xmm9,%xmm9
  movaps %xmm9,%xmm0
  movaps %xmm9,%xmm3
  movaps %xmm9,%xmm6
  movaps %xmm9,%xmm5
  jmp    L54
L50:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D418
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D277
data_type: f32
name: extract_symbolic_data
arguments: data_tag: D316
data_type: f32
name: extract_symbolic_data
arguments: data_tag: D8
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D255
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D269
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D314
data_type: f32
name: extract_symbolic_data
arguments: data_tag: D217
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D97
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D68
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D312
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D32
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D138
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D341
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D191
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D210
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D179
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D458
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D301
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D261
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D78
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D435
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D186
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D112
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D279
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D457
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D154
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D454
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D374
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D61
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D2
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D334
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D35
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D439
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D174
data_type: byte[4]
name: extract_symbolic_data
arguments: data_tag: D371
data_type: byte[4]

tool: {"D418": [0x89,0x88,0x88,0x3d]}

tool: D277: 15

tool: D316: 1

tool: {"D8": [0xd0,0xb5,0xaa,0xbb]}

tool: {"D255": [0xe1,0xbf,0x9d,0xbb]}

tool: {"D269": [0x0c,0xd8,0x69,0xbd]}

tool: D314: 18

tool: {"D217": [0x79,0xe9,0x8f,0x41]}

tool: {"D97": [0x99,0xf9,0x0e,0x3c]}

tool: {"D68": [0xa7,0xc7,0xbf,0xb8]}

tool: {"D312": [0x55,0x3a,0x3b,0x3b]}

tool: {"D32": [0x9a,0x51,0x90,0xb8]}

tool: {"D138": [0xe8,0xe3,0x01,0xb9]}

tool: {"D341": [0xb9,0x92,0x1b,0xb8]}

tool: {"D191": [0x6c,0xcb,0x97,0x3a]}

tool: {"D210": [0x62,0xe5,0x8c,0x3d]}

tool: {"D179": [0xbd,0x47,0x21,0xb9]}

tool: {"D458": [0x8a,0x0b,0x87,0x39]}

tool: {"D301": [0x87,0x55,0x72,0xb8]}

tool: {"D261": [0x2c,0x22,0xf7,0x37]}

tool: {"D78": [0xe0,0x0b,0x39,0x39]}

tool: {"D435": [0x42,0x42,0xbd,0x38]}

tool: {"D186": [0x2d,0x36,0x11,0x37]}

tool: {"D112": [0x4e,0xc5,0x56,0xb7]}

tool: {"D279": [0xb1,0x5f,0xbe,0x38]}

tool: {"D457": [0x0c,0xd8,0x69,0x3d]}

tool: {"D154": [0x16,0x5c,0xe9,0xb8]}

tool: {"D454": [0xb1,0x5f,0x3e,0x39]}

tool: {"D374": [0x2c,0x22,0x77,0x38]}

tool: {"D61": [0xbd,0x47,0x21,0x39]}

tool: {"D2": [0x9a,0x51,0x10,0xb9]}

tool: {"D334": [0xbd,0xd5,0x8f,0xb9]}

tool: {"D35": [0x4e,0xc5,0xd6,0xb7]}

tool: {"D439": [0x87,0x55,0xf2,0xb8]}

tool: {"D174": [0xe0,0x0b,0xb9,0x39]}

tool: {"D371": [0x42,0x42,0x3d,0x39]}

assistant: ```c
float target_phi(float *x, float *dx, int m) {
  int ncoeff = 20;
  float avdat = 0.1158090E-02;
  float xmin[10] = {-0.15000E+02, -0.15000E+02, -0.18000E+02, -0.18013E+02, 0.00000E+00, 0.00000E+00, 0.00000E+00, 0.00000E+00, 0.00000E+00, 0.00000E+00};
  float xmax[10] = {0.15000E+02, 0.15000E+02, 0.18000E+02, 0.17989E+02, 0.00000E+00, 0.00000E+00, 0.00000E+00, 0.00000E+00, 0.00000E+00, 0.00000E+00};
  float scale[10] = {0};
  float coeff[21] = {0.11092651E-07, -0.57090804E-01, 0.68796888E-01, 0.28568704E-02, -0.52096620E-02, -0.48141335E-02, 0.87265009E-02, -0.15380881E-03, 0.25757804E-03, -0.57776950E-04, -0.91447779E-04, 0.29460607E-04, -0.12387300E-03, 0.17647399E-03, -0.37091526E-04, -0.68816546E-04, 0.90245638E-04, 0.86552873E-05, -0.12801333E-04, 0.90777299E-04, 0.};
  int ientry = 0;
  int i;
  if (ientry == 0) {
    ientry = 1;
    for (i = 0; i < m; i++) {
      if (xmin[i] == xmax[i])
        continue;
      scale[i] = 2. / (xmax[i] - xmin[i]);
    }
  }
  float x1 = 1. + (x[0] - xmax[0]) * scale[0];
  float dx1 = dx[0] * scale[0];
  float x2 = 1. + (x[1] - xmax[1]) * scale[1];
  float dx2 = dx[1] * scale[1];
  float x3 = 1. + (x[2] - xmax[2]) * scale[2];
  float dx3 = dx[2] * scale[2];
  float x4 = 1. + (x[3] - xmax[3]) * scale[3];
  float dx4 = dx[3] * scale[3];
  float x11 = x1;
  float x12 = x11 * x1;
  float x13 = x12 * x1;
  float x21 = x2;
  float x22 = x21 * x2;
  float x31 = x3;
  float x32 = x31 * x3;
  float x33 = x32 * x3;
  float x41 = x4;
  float x42 = x41 * x4;
  float v_target_phi = avdat + coeff[0] + coeff[1] * x11 + coeff[2] * x31 + coeff[3] * x11 * x21 + coeff[4] * x21 * x31 + coeff[5] * x11 * x41 + coeff[6] * x31 * x41 + coeff[7] * x21;
  v_target_phi = v_target_phi + coeff[8] * x41 + coeff[9] * x11 * x42 + coeff[10] * x33 * x41 + coeff[11] * x11 * x22 + coeff[12] * x21 * x31 * x41 + coeff[13] * x31 * x42 + coeff[14] * x13 * x21 + coeff[15] * x22 * x31 * x41 + coeff[16] * x21 * x31 * x42;
  v_target_phi = v_target_phi + coeff[17] * x11 * x21 * x31 + coeff[18] * x21 * x32 + coeff[19] * x12 * x21 * x31;
  float dxall = 0 + dx1 + dx2 + dx3 + dx4;
  float dv_target_phi = dxall == 0 ? 0 : sqrt(+dx1 * dx1 * pow(0 + coeff[1] + coeff[3] * x21 + coeff[5] * x41 + coeff[9] * x42 + coeff[11] * x22 + 3 * coeff[14] * x12 * x21 + coeff[17] * x21 * x31 + 2 * coeff[19] * x11 * x21 * x31, 2) + dx2 * dx2 * pow(0 + coeff[3] * x11 + coeff[4] * x31 + coeff[7] + 2 * coeff[11] * x21 * x11 + coeff[12] * x31 * x41 + coeff[14] * x13 + 2 * coeff[15] * x21 * x31 * x41 + coeff[16] * x31 * x42 + coeff[17] * x11 * x31 + coeff[18] * x32 + coeff[19] * x12 * x31, 2) + dx3 * dx3 * pow(0 + coeff[2] + coeff[4] * x21 + coeff[6] * x41 + 3 * coeff[10] * x32 * x41 + coeff[12] * x21 * x41 + coeff[13] * x42 + coeff[15] * x22 * x41 + coeff[16] * x21 * x42 + coeff[17] * x11 * x21 + 2 * coeff[18] * x31 * x21 + coeff[19] * x12 * x21, 2) + dx4 * dx4 * pow(0 + coeff[5] * x11 + coeff[6] * x31 + coeff[8] + 2 * coeff[9] * x41 * x11 + coeff[10] * x33 + coeff[12] * x21 * x31 + 2 * coeff[13] * x41 * x31 + coeff[15] * x22 * x31 + 2 * coeff[16] * x41 * x21 * x31, 2));
  dx[0] = dv_target_phi;
  return v_target_phi;
}
```