user: 请从给定的汇编指令推导出C源代码：

```asm
<target_phi>:
  endbr64
  push   %rbx
  pxor   %xmm0,%xmm0
  mov    %rsi,%rbx
  sub    $0x100,%rsp
  movss  D481(%rip),%xmm1
  movss  D259(%rip),%xmm4
  mov    %fs:0x28,%rax
  mov    %rax,0xf8(%rsp)
  xor    %eax,%eax
  movaps %xmm0,0xd0(%rsp)
  movabs $0xc19024ddc1900000,%rax
  mov    %rax,0x78(%rsp)
  movabs $0x418fdd2f41900000,%rax
  movq   $0x0,0x80(%rsp)
  movq   $0x0,0x88(%rsp)
  movq   $0x0,0x90(%rsp)
  mov    %rax,0xa8(%rsp)
  movq   $0x0,0xb0(%rsp)
  movq   $0x0,0xb8(%rsp)
  movq   $0x0,0xc0(%rsp)
  movq   $0x0,0xf0(%rsp)
  movss  %xmm1,0x74(%rsp)
  movss  %xmm4,0xa4(%rsp)
  movaps %xmm0,0xe0(%rsp)
  test   %edx,%edx
  jle    L70
  sub    $0x1,%edx
  movss  D3(%rip),%xmm2
  xor    %eax,%eax
  movaps %xmm4,%xmm0
  shl    $0x2,%rdx
  lea    0x74(%rsp),%rsi
  lea    0xa4(%rsp),%rcx
  jmp    L52
  nopl   (%rax)
L71:
  movss  (%rsi,%rax,1),%xmm1
  movss  (%rcx,%rax,1),%xmm0
  add    $0x4,%rax
L52:
  ucomiss %xmm0,%xmm1
  jp     L49
  je     L33
L49:
  subss  %xmm1,%xmm0
  movaps %xmm2,%xmm1
  divss  %xmm0,%xmm1
  movss  %xmm1,0xd0(%rsp,%rax,1)
L33:
  cmp    %rdx,%rax
  jne    L71
  movss  0xd0(%rsp),%xmm6
  pxor   %xmm10,%xmm10
  movss  0xd4(%rsp),%xmm5
  movss  0xd8(%rsp),%xmm1
  movss  0xdc(%rsp),%xmm0
L0:
  movss  (%rdi),%xmm2
  movss  0x4(%rdi),%xmm3
  movss  D316(%rip),%xmm7
  subss  %xmm4,%xmm2
  subss  %xmm4,%xmm3
  movss  0x8(%rdi),%xmm4
  subss  D55(%rip),%xmm4
  mulss  %xmm5,%xmm3
  mulss  %xmm1,%xmm4
  mulss  0x8(%rbx),%xmm1
  mulss  %xmm6,%xmm2
  mulss  0x4(%rbx),%xmm5
  addss  %xmm7,%xmm3
  mulss  (%rbx),%xmm6
  addss  %xmm7,%xmm4
  movss  %xmm1,0x2c(%rsp)
  movss  0xc(%rdi),%xmm1
  subss  D237(%rip),%xmm1
  addss  %xmm7,%xmm2
  movaps %xmm3,%xmm8
  movaps %xmm3,%xmm9
  mulss  %xmm3,%xmm8
  movaps %xmm4,%xmm13
  movaps %xmm3,%xmm14
  mulss  %xmm0,%xmm1
  mulss  0xc(%rbx),%xmm0
  movaps %xmm2,%xmm12
  mulss  %xmm2,%xmm12
  mulss  %xmm8,%xmm9
  addss  %xmm7,%xmm1
  movaps %xmm4,%xmm7
  movss  %xmm0,0x30(%rsp)
  mulss  %xmm4,%xmm7
  movaps %xmm1,%xmm0
  movaps %xmm1,%xmm15
  mulss  %xmm1,%xmm0
  mulss  %xmm9,%xmm14
  mulss  %xmm7,%xmm13
  movaps %xmm0,%xmm11
  movss  %xmm0,0x8(%rsp)
  movss  D193(%rip),%xmm0
  mulss  %xmm1,%xmm11
  mulss  %xmm3,%xmm0
  mulss  %xmm11,%xmm15
  movss  %xmm0,0x10(%rsp)
  movss  D355(%rip),%xmm0
  mulss  %xmm4,%xmm0
  movss  %xmm15,0x34(%rsp)
  movss  D146(%rip),%xmm15
  mulss  %xmm2,%xmm15
  movss  %xmm0,0x18(%rsp)
  movaps %xmm2,%xmm0
  mulss  %xmm12,%xmm0
  mulss  D501(%rip),%xmm0
  movss  %xmm15,0xc(%rsp)
  movss  D272(%rip),%xmm15
  mulss  %xmm2,%xmm15
  movss  %xmm0,0x20(%rsp)
  movss  D295(%rip),%xmm0
  mulss  %xmm4,%xmm0
  movss  %xmm15,0x14(%rsp)
  movss  D137(%rip),%xmm15
  mulss  %xmm7,%xmm15
  movss  %xmm15,0x1c(%rsp)
  movss  D48(%rip),%xmm15
  mulss  %xmm2,%xmm15
  addss  D489(%rip),%xmm15
  addss  %xmm15,%xmm0
  movss  0xc(%rsp),%xmm15
  mulss  %xmm3,%xmm15
  addss  %xmm0,%xmm15
  movss  0x10(%rsp),%xmm0
  mulss  %xmm4,%xmm0
  addss  %xmm15,%xmm0
  movss  0x14(%rsp),%xmm15
  mulss  %xmm1,%xmm15
  addss  %xmm0,%xmm15
  movss  0x18(%rsp),%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm15,%xmm0
  movss  D511(%rip),%xmm15
  mulss  %xmm1,%xmm15
  addss  %xmm0,%xmm15
  movss  D375(%rip),%xmm0
  mulss  %xmm3,%xmm0
  addss  %xmm15,%xmm0
  movss  D245(%rip),%xmm15
  mulss  %xmm4,%xmm15
  mulss  0x34(%rsp),%xmm15
  addss  %xmm0,%xmm15
  movss  D15(%rip),%xmm0
  mulss  %xmm3,%xmm0
  mulss  %xmm13,%xmm0
  addss  %xmm15,%xmm0
  movss  D96(%rip),%xmm15
  mulss  %xmm2,%xmm15
  mulss  %xmm11,%xmm15
  addss  %xmm0,%xmm15
  movss  D495(%rip),%xmm0
  mulss  %xmm2,%xmm0
  mulss  %xmm14,%xmm0
  addss  %xmm15,%xmm0
  movss  0x1c(%rsp),%xmm15
  mulss  %xmm1,%xmm15
  addss  %xmm0,%xmm15
  movss  D484(%rip),%xmm0
  mulss  %xmm4,%xmm0
  mulss  0x8(%rsp),%xmm0
  addss  %xmm15,%xmm0
  movss  0x20(%rsp),%xmm15
  mulss  %xmm3,%xmm15
  addss  %xmm15,%xmm0
  movss  D407(%rip),%xmm15
  mulss  %xmm2,%xmm15
  mulss  %xmm8,%xmm15
  movss  %xmm15,0x24(%rsp)
  movss  D30(%rip),%xmm15
  mulss  %xmm2,%xmm15
  mulss  %xmm7,%xmm15
  movss  %xmm15,0x28(%rsp)
  movss  D462(%rip),%xmm15
  mulss  %xmm2,%xmm15
  mulss  %xmm9,%xmm15
  addss  %xmm15,%xmm0
  movss  0x24(%rsp),%xmm15
  mulss  %xmm1,%xmm15
  addss  %xmm0,%xmm15
  movss  0x28(%rsp),%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm15,%xmm0
  movss  D263(%rip),%xmm15
  mulss  %xmm13,%xmm15
  movss  %xmm15,0x38(%rsp)
  mulss  %xmm1,%xmm15
  addss  %xmm0,%xmm15
  movaps %xmm6,%xmm0
  addss  %xmm10,%xmm0
  addss  %xmm5,%xmm0
  addss  0x2c(%rsp),%xmm0
  addss  0x30(%rsp),%xmm0
  ucomiss %xmm10,%xmm0
  jp     L84
  movaps %xmm10,%xmm0
  jne    L84
L91:
  movss  %xmm0,(%rbx)
  mov    0xf8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L60
  add    $0x100,%rsp
  movaps %xmm15,%xmm0
  pop    %rbx
  ret
  xchg   %ax,%ax
L84:
  movss  %xmm5,0x40(%rsp)
  mulss  %xmm6,%xmm6
  movss  D272(%rip),%xmm5
  movss  D146(%rip),%xmm0
  mulss  D495(%rip),%xmm14
  mov    $0x2,%edi
  movss  %xmm15,0x6c(%rsp)
  mulss  %xmm1,%xmm5
  movss  %xmm11,0x60(%rsp)
  mulss  %xmm3,%xmm0
  movss  %xmm10,0x54(%rsp)
  subss  D285(%rip),%xmm0
  movss  %xmm13,0x68(%rsp)
  mulss  D222(%rip),%xmm12
  movss  %xmm6,0x3c(%rsp)
  movss  %xmm4,0x50(%rsp)
  movaps %xmm5,%xmm6
  movss  D462(%rip),%xmm5
  movss  %xmm2,0x64(%rsp)
  addss  %xmm0,%xmm6
  movss  D96(%rip),%xmm0
  movss  %xmm3,0x5c(%rsp)
  mulss  %xmm9,%xmm5
  movss  %xmm9,0x4c(%rsp)
  mulss  %xmm11,%xmm0
  movss  %xmm8,0x48(%rsp)
  mulss  %xmm3,%xmm12
  movss  %xmm7,0x58(%rsp)
  movss  %xmm1,0x44(%rsp)
  addss  %xmm6,%xmm0
  movaps %xmm5,%xmm6
  movss  D30(%rip),%xmm5
  mulss  %xmm7,%xmm5
  addss  %xmm0,%xmm14
  movss  D407(%rip),%xmm0
  mulss  %xmm8,%xmm0
  addss  %xmm14,%xmm12
  addss  %xmm12,%xmm6
  mulss  %xmm1,%xmm0
  addss  %xmm6,%xmm0
  movaps %xmm5,%xmm6
  mulss  %xmm1,%xmm6
  addss  %xmm6,%xmm0
  call   <pow@plt>
  movss  0xc(%rsp),%xmm7
  mov    $0x2,%edi
  movss  0x54(%rsp),%xmm10
  mulss  0x3c(%rsp),%xmm0
  movss  0x50(%rsp),%xmm4
  addss  %xmm10,%xmm7
  movss  0x68(%rsp),%xmm13
  movss  0x40(%rsp),%xmm5
  movss  0x5c(%rsp),%xmm3
  movss  0x4c(%rsp),%xmm9
  mulss  %xmm5,%xmm5
  movss  0x64(%rsp),%xmm2
  movss  0x48(%rsp),%xmm8
  mulss  D240(%rip),%xmm9
  movss  0x44(%rsp),%xmm1
  movss  %xmm3,0x4c(%rsp)
  mulss  D276(%rip),%xmm8
  movss  %xmm0,0x3c(%rsp)
  movaps %xmm7,%xmm0
  movss  D193(%rip),%xmm7
  movss  %xmm2,0x48(%rsp)
  mulss  %xmm4,%xmm7
  movss  %xmm5,0x40(%rsp)
  mulss  %xmm2,%xmm9
  mulss  %xmm2,%xmm8
  addss  %xmm7,%xmm0
  movss  D15(%rip),%xmm7
  subss  D328(%rip),%xmm0
  mulss  %xmm13,%xmm7
  movaps %xmm7,%xmm5
  movaps %xmm3,%xmm7
  mulss  D296(%rip),%xmm7
  addss  %xmm0,%xmm5
  addss  %xmm5,%xmm9
  addss  0x20(%rsp),%xmm9
  movaps %xmm7,%xmm0
  mulss  %xmm2,%xmm0
  addss  %xmm9,%xmm8
  mulss  %xmm1,%xmm0
  addss  %xmm8,%xmm0
  call   <pow@plt>
  mulss  0x40(%rsp),%xmm0
  movss  0x3c(%rsp),%xmm7
  mov    $0x2,%edi
  movss  0x44(%rsp),%xmm1
  movss  D295(%rip),%xmm5
  addss  0x10(%rsp),%xmm5
  movss  0x4c(%rsp),%xmm3
  movss  0x50(%rsp),%xmm4
  movss  0x48(%rsp),%xmm2
  movss  0x2c(%rsp),%xmm6
  movss  %xmm1,0x2c(%rsp)
  addss  %xmm0,%xmm7
  movss  D355(%rip),%xmm0
  movss  %xmm4,0x3c(%rsp)
  mulss  %xmm6,%xmm6
  mulss  %xmm1,%xmm0
  movss  %xmm7,0xc(%rsp)
  movss  0x58(%rsp),%xmm7
  movss  %xmm6,0x20(%rsp)
  addss  %xmm5,%xmm0
  movss  D245(%rip),%xmm5
  mulss  0x34(%rsp),%xmm5
  movss  %xmm2,0x34(%rsp)
  addss  %xmm5,%xmm0
  movss  D113(%rip),%xmm5
  mulss  %xmm7,%xmm5
  mulss  D16(%rip),%xmm7
  mulss  %xmm3,%xmm5
  movss  D484(%rip),%xmm3
  mulss  0x8(%rsp),%xmm3
  mulss  %xmm1,%xmm7
  addss  %xmm5,%xmm0
  movss  D424(%rip),%xmm5
  mulss  %xmm4,%xmm5
  mulss  %xmm1,%xmm5
  addss  %xmm0,%xmm5
  movaps %xmm4,%xmm0
  mulss  D121(%rip),%xmm0
  addss  %xmm5,%xmm3
  mulss  %xmm2,%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm3,%xmm0
  addss  %xmm7,%xmm0
  call   <pow@plt>
  mulss  0x20(%rsp),%xmm0
  mov    $0x2,%edi
  movss  0x60(%rsp),%xmm11
  mulss  D51(%rip),%xmm11
  addss  0xc(%rsp),%xmm0
  movss  0x54(%rsp),%xmm10
  movss  0x14(%rsp),%xmm7
  movss  0x3c(%rsp),%xmm4
  movss  0x8(%rsp),%xmm3
  mulss  D33(%rip),%xmm3
  addss  %xmm10,%xmm7
  movss  %xmm0,0xc(%rsp)
  movss  0x18(%rsp),%xmm0
  movss  0x34(%rsp),%xmm2
  movss  0x2c(%rsp),%xmm1
  mulss  %xmm4,%xmm11
  movss  0x30(%rsp),%xmm5
  mulss  D116(%rip),%xmm1
  addss  %xmm7,%xmm0
  addss  D511(%rip),%xmm0
  mulss  %xmm5,%xmm5
  mulss  %xmm3,%xmm2
  addss  %xmm11,%xmm0
  mulss  %xmm4,%xmm1
  movss  %xmm5,0x10(%rsp)
  addss  %xmm2,%xmm0
  addss  0x1c(%rsp),%xmm0
  addss  %xmm1,%xmm0
  addss  0x24(%rsp),%xmm0
  addss  0x28(%rsp),%xmm0
  addss  0x38(%rsp),%xmm0
  call   <pow@plt>
  mulss  0x10(%rsp),%xmm0
  addss  0xc(%rsp),%xmm0
  call   <sqrt@plt>
  movss  0x6c(%rsp),%xmm15
  jmp    L91
  nopl   0x0(%rax)
L70:
  pxor   %xmm10,%xmm10
  movaps %xmm10,%xmm0
  movaps %xmm10,%xmm1
  movaps %xmm10,%xmm5
  movaps %xmm10,%xmm6
  jmp    L0
L60:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: label: D481
datatype: byte[4]
name: parse_data
arguments: label: D259
datatype: f32
name: parse_data
arguments: label: D3
datatype: f32
name: parse_data
arguments: label: D316
datatype: f32
name: parse_data
arguments: label: D55
datatype: f32
name: parse_data
arguments: label: D237
datatype: byte[4]
name: parse_data
arguments: label: D193
datatype: byte[4]
name: parse_data
arguments: label: D355
datatype: byte[4]
name: parse_data
arguments: label: D146
datatype: byte[4]
name: parse_data
arguments: label: D501
datatype: byte[4]
name: parse_data
arguments: label: D272
datatype: byte[4]
name: parse_data
arguments: label: D295
datatype: byte[4]
name: parse_data
arguments: label: D137
datatype: byte[4]
name: parse_data
arguments: label: D48
datatype: byte[4]
name: parse_data
arguments: label: D489
datatype: byte[4]
name: parse_data
arguments: label: D511
datatype: byte[4]
name: parse_data
arguments: label: D375
datatype: byte[4]
name: parse_data
arguments: label: D245
datatype: byte[4]
name: parse_data
arguments: label: D15
datatype: byte[4]
name: parse_data
arguments: label: D96
datatype: byte[4]
name: parse_data
arguments: label: D495
datatype: byte[4]
name: parse_data
arguments: label: D484
datatype: byte[4]
name: parse_data
arguments: label: D407
datatype: byte[4]
name: parse_data
arguments: label: D30
datatype: byte[4]
name: parse_data
arguments: label: D462
datatype: byte[4]
name: parse_data
arguments: label: D263
datatype: byte[4]
name: parse_data
arguments: label: D285
datatype: byte[4]
name: parse_data
arguments: label: D222
datatype: byte[4]
name: parse_data
arguments: label: D240
datatype: byte[4]
name: parse_data
arguments: label: D276
datatype: byte[4]
name: parse_data
arguments: label: D328
datatype: byte[4]
name: parse_data
arguments: label: D296
datatype: byte[4]
name: parse_data
arguments: label: D113
datatype: byte[4]
name: parse_data
arguments: label: D16
datatype: byte[4]
name: parse_data
arguments: label: D424
datatype: byte[4]
name: parse_data
arguments: label: D121
datatype: byte[4]
name: parse_data
arguments: label: D51
datatype: byte[4]
name: parse_data
arguments: label: D33
datatype: byte[4]
name: parse_data
arguments: label: D116
datatype: byte[4]

tool: {"D481": [0x00,0x00,0x70,0xc1]}

tool: D259: 15

tool: D3: 2

tool: D316: 1

tool: D55: 18

tool: {"D237": [0x2f,0xdd,0x8f,0x41]}

tool: {"D193": [0x2e,0xf3,0xe5,0xbb]}

tool: {"D355": [0xa8,0xad,0x40,0x3c]}

tool: {"D146": [0x27,0x8f,0x7d,0x3b]}

tool: {"D501": [0x5c,0x17,0x2a,0xb8]}

tool: {"D272": [0x0f,0x74,0xd5,0xbb]}

tool: {"D295": [0x3c,0xba,0x8d,0x3d]}

tool: {"D137": [0xf7,0x94,0xe5,0xb6]}

tool: {"D48": [0x08,0x99,0x6a,0xbd]}

tool: {"D489": [0x41,0x31,0x17,0x3b]}

tool: {"D511": [0x10,0x4f,0xcb,0x39]}

tool: {"D375": [0x4b,0x5d,0x71,0xb9]}

tool: {"D245": [0x9b,0x9d,0xdb,0x37]}

tool: {"D15": [0x89,0x6e,0xec,0x38]}

tool: {"D96": [0xec,0x62,0x13,0x39]}

tool: {"D495": [0x9f,0x7f,0x92,0xb7]}

tool: {"D484": [0x2c,0xf8,0xe6,0x37]}

tool: {"D407": [0x7a,0xe4,0x5f,0xb9]}

tool: {"D30": [0xec,0x8e,0x9d,0x39]}

tool: {"D462": [0x73,0xb0,0xd7,0x38]}

tool: {"D263": [0x9e,0xac,0xdf,0xb9]}

tool: {"D285": [0x08,0x99,0x6a,0x3d]}

tool: {"D222": [0x0a,0x23,0xff,0xb8]}

tool: {"D240": [0x9f,0x7f,0x92,0xb8]}

tool: {"D276": [0x56,0xc4,0xa1,0x39]}

tool: {"D328": [0x4b,0x5d,0x71,0x39]}

tool: {"D296": [0x7a,0xe4,0xdf,0xb9]}

tool: {"D113": [0xe7,0x52,0xb1,0x39]}

tool: {"D16": [0x76,0xc1,0xa7,0xba]}

tool: {"D424": [0xf7,0x94,0x65,0xb7]}

tool: {"D121": [0xec,0x8e,0x1d,0x3a]}

tool: {"D51": [0x9b,0x9d,0xdb,0x38]}

tool: {"D33": [0x62,0x14,0xdd,0x39]}

tool: {"D116": [0x2c,0xf8,0x66,0x38]}

assistant: ```c
float target_phi(float *x, float *dx, int m) {
  int ncoeff = 20;
  float avdat = 0.2306944E-02;
  float xmin[10] = {-0.15000E+02, -0.15000E+02, -0.18000E+02, -0.18018E+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, 0.17983E+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] = {0.68881825E-07, -0.57274848E-01, 0.69202870E-01, 0.38690062E-02, -0.70175147E-02, -0.65140794E-02, 0.11760153E-01, 0.38778083E-03, -0.23018305E-03, 0.26180225E-04, 0.11273946E-03, 0.14055864E-03, -0.17463984E-04, -0.68420736E-05, 0.27533701E-04, -0.40552914E-04, 0.10284865E-03, -0.21352051E-03, 0.30051859E-03, -0.42662484E-03, 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 x23 = x22 * x2;
  float x24 = x23 * x2;
  float x31 = x3;
  float x32 = x31 * x3;
  float x33 = x32 * x3;
  float x41 = x4;
  float x42 = x41 * x4;
  float x43 = x42 * x4;
  float x44 = x43 * 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] * x41;
  v_target_phi = v_target_phi + coeff[8] * x21 + coeff[9] * x31 * x44 + coeff[10] * x21 * x33 + coeff[11] * x11 * x43 + coeff[12] * x11 * x24 + coeff[13] * x32 * x41 + coeff[14] * x31 * x42 + coeff[15] * x13 * x21 + coeff[16] * x11 * x23;
  v_target_phi = v_target_phi + coeff[17] * x11 * x22 * x41 + coeff[18] * x11 * x32 * x41 + coeff[19] * x33 * x41;
  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[11] * x43 + coeff[12] * x24 + 3 * coeff[15] * x12 * x21 + coeff[16] * x23 + coeff[17] * x22 * x41 + coeff[18] * x32 * x41, 2) + dx2 * dx2 * pow(0 + coeff[3] * x11 + coeff[4] * x31 + coeff[8] + coeff[10] * x33 + 4 * coeff[12] * x23 * x11 + coeff[15] * x13 + 3 * coeff[16] * x22 * x11 + 2 * coeff[17] * x21 * x11 * x41, 2) + dx3 * dx3 * pow(0 + coeff[2] + coeff[4] * x21 + coeff[6] * x41 + coeff[9] * x44 + 3 * coeff[10] * x32 * x21 + 2 * coeff[13] * x31 * x41 + coeff[14] * x42 + 2 * coeff[18] * x31 * x11 * x41 + 3 * coeff[19] * x32 * x41, 2) + dx4 * dx4 * pow(0 + coeff[5] * x11 + coeff[6] * x31 + coeff[7] + 4 * coeff[9] * x43 * x31 + 3 * coeff[11] * x42 * x11 + coeff[13] * x32 + 2 * coeff[14] * x41 * x31 + coeff[17] * x11 * x22 + coeff[18] * x11 * x32 + coeff[19] * x33, 2));
  dx[0] = dv_target_phi;
  return v_target_phi;
}
```