user: Converte this assembly snippet into its equivalent C code:

```asm
<target_phi>:
  endbr64
  push   %rbx
  pxor   %xmm0,%xmm0
  mov    %rsi,%rbx
  sub    $0xa0,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x98(%rsp)
  xor    %eax,%eax
  movaps %xmm0,0x70(%rsp)
  test   %edx,%edx
  jle    L45
  movss  D388(%rip),%xmm5
  cmp    $0x1,%edx
  je     L29
  movss  %xmm5,0x74(%rsp)
  cmp    $0x2,%edx
  je     L29
  movl   $0x3d638e39,0x78(%rsp)
  cmp    $0x3,%edx
  je     L29
  movl   $0x3d638c9b,0x7c(%rsp)
L29:
  movss  0x74(%rsp),%xmm8
  movss  0x7c(%rsp),%xmm0
  pxor   %xmm10,%xmm10
  movss  0x78(%rsp),%xmm9
L55:
  movss  0x8(%rdi),%xmm3
  subss  D202(%rip),%xmm3
  movss  D466(%rip),%xmm1
  movss  0x4(%rdi),%xmm4
  movss  (%rdi),%xmm2
  movss  D294(%rip),%xmm6
  mulss  %xmm9,%xmm3
  subss  %xmm1,%xmm4
  movss  D375(%rip),%xmm15
  movss  D1(%rip),%xmm11
  subss  %xmm1,%xmm2
  movss  0xc(%rdi),%xmm1
  subss  D73(%rip),%xmm1
  movss  D76(%rip),%xmm13
  mulss  0x8(%rbx),%xmm9
  mulss  %xmm8,%xmm4
  mulss  %xmm5,%xmm2
  addss  %xmm6,%xmm3
  mulss  %xmm0,%xmm1
  mulss  0xc(%rbx),%xmm0
  mulss  (%rbx),%xmm5
  mulss  %xmm3,%xmm15
  addss  %xmm6,%xmm4
  movaps %xmm3,%xmm7
  addss  %xmm6,%xmm2
  mulss  %xmm3,%xmm7
  addss  %xmm6,%xmm1
  mulss  0x4(%rbx),%xmm8
  movss  %xmm0,0x20(%rsp)
  movss  D49(%rip),%xmm0
  movaps %xmm4,%xmm14
  mulss  %xmm2,%xmm11
  mulss  %xmm4,%xmm0
  movss  %xmm15,0x8(%rsp)
  movaps %xmm2,%xmm15
  movaps %xmm1,%xmm6
  mulss  %xmm2,%xmm15
  movaps %xmm1,%xmm12
  mulss  %xmm2,%xmm13
  mulss  %xmm4,%xmm14
  movss  %xmm11,0xc(%rsp)
  mulss  %xmm1,%xmm6
  movss  D416(%rip),%xmm11
  movss  %xmm0,(%rsp)
  movss  D484(%rip),%xmm0
  mulss  %xmm2,%xmm11
  mulss  %xmm15,%xmm0
  movss  %xmm13,0x4(%rsp)
  movss  D4(%rip),%xmm13
  mulss  %xmm4,%xmm13
  mulss  %xmm6,%xmm12
  mulss  %xmm14,%xmm11
  movaps %xmm0,%xmm15
  movss  %xmm0,0x30(%rsp)
  movss  D480(%rip),%xmm0
  mulss  %xmm4,%xmm15
  mulss  %xmm2,%xmm0
  movss  %xmm13,0x28(%rsp)
  mulss  %xmm3,%xmm13
  movss  %xmm12,0x24(%rsp)
  movss  D33(%rip),%xmm12
  movss  %xmm11,0x10(%rsp)
  movaps %xmm3,%xmm11
  mulss  %xmm7,%xmm11
  movss  %xmm15,0x34(%rsp)
  mulss  %xmm2,%xmm12
  mulss  %xmm7,%xmm0
  movss  %xmm13,0x2c(%rsp)
  mulss  %xmm1,%xmm13
  mulss  %xmm3,%xmm15
  movss  %xmm0,0x14(%rsp)
  movss  D382(%rip),%xmm0
  mulss  D419(%rip),%xmm11
  mulss  %xmm3,%xmm0
  movss  %xmm11,0x18(%rsp)
  movss  D295(%rip),%xmm11
  mulss  %xmm2,%xmm11
  addss  D431(%rip),%xmm11
  addss  %xmm11,%xmm0
  movaps %xmm12,%xmm11
  mulss  %xmm4,%xmm11
  addss  %xmm0,%xmm11
  movss  (%rsp),%xmm0
  mulss  %xmm3,%xmm0
  addss  %xmm11,%xmm0
  movss  0x4(%rsp),%xmm11
  mulss  %xmm1,%xmm11
  addss  %xmm0,%xmm11
  movss  0x8(%rsp),%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm11,%xmm0
  movss  D80(%rip),%xmm11
  mulss  %xmm1,%xmm11
  addss  %xmm0,%xmm11
  movss  D270(%rip),%xmm0
  mulss  %xmm4,%xmm0
  addss  %xmm11,%xmm0
  movaps %xmm13,%xmm11
  movss  D345(%rip),%xmm13
  mulss  %xmm3,%xmm13
  addss  %xmm0,%xmm11
  movaps %xmm13,%xmm0
  movss  D437(%rip),%xmm13
  mulss  %xmm6,%xmm0
  mulss  %xmm2,%xmm13
  addss  %xmm11,%xmm0
  movaps %xmm15,%xmm11
  movaps %xmm13,%xmm15
  mulss  %xmm4,%xmm15
  addss  %xmm0,%xmm11
  movss  0xc(%rsp),%xmm0
  mulss  %xmm4,%xmm0
  movss  %xmm15,0x1c(%rsp)
  mulss  %xmm7,%xmm0
  addss  %xmm11,%xmm0
  movss  0x10(%rsp),%xmm11
  mulss  %xmm1,%xmm11
  addss  %xmm0,%xmm11
  movss  0x14(%rsp),%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm11,%xmm0
  movss  0x18(%rsp),%xmm11
  mulss  %xmm1,%xmm11
  addss  %xmm11,%xmm0
  movss  D118(%rip),%xmm11
  mulss  %xmm2,%xmm11
  movaps %xmm11,%xmm15
  mulss  %xmm4,%xmm15
  mulss  %xmm6,%xmm15
  addss  %xmm0,%xmm15
  movss  D214(%rip),%xmm0
  mulss  %xmm3,%xmm0
  mulss  0x24(%rsp),%xmm0
  addss  %xmm15,%xmm0
  movss  0x1c(%rsp),%xmm15
  mulss  %xmm1,%xmm15
  addss  %xmm0,%xmm15
  movss  D155(%rip),%xmm0
  mulss  %xmm2,%xmm0
  mulss  %xmm6,%xmm0
  addss  %xmm0,%xmm15
  movaps %xmm5,%xmm0
  addss  %xmm10,%xmm0
  addss  %xmm8,%xmm0
  addss  %xmm9,%xmm0
  addss  0x20(%rsp),%xmm0
  ucomiss %xmm10,%xmm0
  jp     L76
  movaps %xmm10,%xmm0
  jne    L76
L33:
  movss  %xmm0,(%rbx)
  mov    0x98(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L31
  add    $0xa0,%rsp
  movaps %xmm15,%xmm0
  pop    %rbx
  ret
  nopw   0x0(%rax,%rax,1)
L76:
  mulss  %xmm5,%xmm5
  movss  %xmm8,0x3c(%rsp)
  movss  D33(%rip),%xmm0
  movaps %xmm2,%xmm8
  mulss  D366(%rip),%xmm8
  movss  %xmm7,0x4c(%rsp)
  mov    $0x2,%edi
  mulss  %xmm4,%xmm0
  movss  %xmm15,0x6c(%rsp)
  mulss  D416(%rip),%xmm14
  movss  %xmm9,0x68(%rsp)
  movss  %xmm10,0x58(%rsp)
  movss  %xmm5,0x38(%rsp)
  movss  %xmm13,0x64(%rsp)
  movaps %xmm0,%xmm5
  movss  D76(%rip),%xmm0
  subss  D462(%rip),%xmm5
  movss  %xmm11,0x60(%rsp)
  mulss  %xmm1,%xmm14
  movss  %xmm12,0x54(%rsp)
  mulss  %xmm1,%xmm0
  movss  %xmm2,0x5c(%rsp)
  movss  %xmm3,0x50(%rsp)
  movss  %xmm4,0x48(%rsp)
  movss  %xmm1,0x44(%rsp)
  movss  %xmm6,0x40(%rsp)
  addss  %xmm5,%xmm0
  movaps %xmm8,%xmm5
  mulss  %xmm4,%xmm5
  mulss  %xmm3,%xmm5
  addss  %xmm0,%xmm5
  movss  D1(%rip),%xmm0
  mulss  %xmm4,%xmm0
  mulss  %xmm7,%xmm0
  addss  %xmm5,%xmm0
  addss  %xmm0,%xmm14
  movss  D480(%rip),%xmm0
  mulss  %xmm7,%xmm0
  movss  D118(%rip),%xmm7
  mulss  %xmm4,%xmm7
  mulss  %xmm1,%xmm0
  movaps %xmm7,%xmm5
  movss  D155(%rip),%xmm7
  mulss  %xmm6,%xmm5
  mulss  %xmm6,%xmm7
  addss  %xmm14,%xmm0
  addss  %xmm0,%xmm5
  movss  D437(%rip),%xmm0
  mulss  %xmm4,%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm5,%xmm0
  addss  %xmm7,%xmm0
  call   <pow@plt>
  movss  0x50(%rsp),%xmm3
  movss  D49(%rip),%xmm6
  mov    $0x2,%edi
  movss  0x58(%rsp),%xmm10
  movss  0x54(%rsp),%xmm12
  mulss  %xmm3,%xmm6
  movss  0x44(%rsp),%xmm1
  movss  0x30(%rsp),%xmm5
  movss  %xmm3,0x54(%rsp)
  addss  %xmm10,%xmm12
  mulss  0x38(%rsp),%xmm0
  movss  0x4c(%rsp),%xmm7
  mulss  %xmm3,%xmm5
  movss  0x48(%rsp),%xmm4
  movss  0x5c(%rsp),%xmm2
  movss  0x60(%rsp),%xmm11
  movss  0x64(%rsp),%xmm13
  movss  %xmm7,0x50(%rsp)
  movss  0x3c(%rsp),%xmm8
  movss  %xmm4,0x4c(%rsp)
  addss  %xmm6,%xmm12
  mulss  %xmm1,%xmm13
  movss  D4(%rip),%xmm6
  subss  D206(%rip),%xmm12
  movss  %xmm0,0x38(%rsp)
  mulss  %xmm8,%xmm8
  mulss  %xmm3,%xmm6
  movss  %xmm2,0x48(%rsp)
  movss  %xmm8,0x3c(%rsp)
  movaps %xmm6,%xmm0
  movaps %xmm4,%xmm6
  mulss  %xmm1,%xmm0
  mulss  D255(%rip),%xmm6
  addss  %xmm12,%xmm0
  addss  %xmm5,%xmm0
  movss  0xc(%rsp),%xmm5
  mulss  %xmm7,%xmm5
  addss  %xmm0,%xmm5
  movaps %xmm6,%xmm0
  movss  0x40(%rsp),%xmm6
  movss  %xmm1,0x40(%rsp)
  mulss  %xmm2,%xmm0
  mulss  %xmm6,%xmm11
  movss  %xmm6,0x44(%rsp)
  mulss  %xmm1,%xmm0
  addss  %xmm5,%xmm0
  addss  %xmm0,%xmm11
  addss  %xmm13,%xmm11
  movaps %xmm11,%xmm0
  call   <pow@plt>
  mulss  0x3c(%rsp),%xmm0
  movss  0x38(%rsp),%xmm6
  mov    $0x2,%edi
  movss  0x40(%rsp),%xmm1
  movss  D382(%rip),%xmm5
  addss  (%rsp),%xmm5
  movss  0x54(%rsp),%xmm3
  movss  0x48(%rsp),%xmm2
  movss  0x4c(%rsp),%xmm4
  movss  0x50(%rsp),%xmm7
  mulss  D62(%rip),%xmm7
  movss  %xmm3,0x38(%rsp)
  addss  %xmm0,%xmm6
  movss  D375(%rip),%xmm0
  movss  0x68(%rsp),%xmm9
  movss  %xmm4,0x3c(%rsp)
  mulss  %xmm1,%xmm0
  movss  %xmm6,0xc(%rsp)
  movss  0x44(%rsp),%xmm6
  mulss  %xmm9,%xmm9
  mulss  %xmm1,%xmm7
  movss  %xmm6,0x40(%rsp)
  addss  %xmm5,%xmm0
  movss  0x28(%rsp),%xmm5
  movss  %xmm1,0x28(%rsp)
  movss  %xmm9,0x30(%rsp)
  mulss  %xmm1,%xmm5
  addss  %xmm5,%xmm0
  movss  D345(%rip),%xmm5
  mulss  %xmm6,%xmm5
  addss  %xmm0,%xmm5
  movss  0x34(%rsp),%xmm0
  movss  %xmm2,0x34(%rsp)
  addss  %xmm5,%xmm0
  movss  D11(%rip),%xmm5
  mulss  %xmm3,%xmm5
  mulss  %xmm2,%xmm5
  mulss  %xmm4,%xmm5
  addss  %xmm0,%xmm5
  movaps %xmm3,%xmm0
  mulss  D385(%rip),%xmm0
  mulss  %xmm2,%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm5,%xmm0
  addss  %xmm0,%xmm7
  movss  D214(%rip),%xmm0
  mulss  0x24(%rsp),%xmm0
  addss  %xmm7,%xmm0
  call   <pow@plt>
  mulss  0x30(%rsp),%xmm0
  mov    $0x2,%edi
  movss  0x28(%rsp),%xmm1
  addss  0xc(%rsp),%xmm0
  movss  0x58(%rsp),%xmm10
  movss  0x4(%rsp),%xmm3
  movss  D356(%rip),%xmm5
  movss  0x34(%rsp),%xmm2
  movss  0x3c(%rsp),%xmm4
  addss  %xmm10,%xmm3
  mulss  %xmm1,%xmm5
  movss  %xmm0,(%rsp)
  movss  0x8(%rsp),%xmm0
  movss  0x40(%rsp),%xmm6
  mulss  D311(%rip),%xmm6
  movss  0x20(%rsp),%xmm7
  addss  %xmm3,%xmm0
  movss  0x38(%rsp),%xmm3
  addss  D80(%rip),%xmm0
  addss  0x2c(%rsp),%xmm0
  mulss  %xmm7,%xmm7
  mulss  %xmm3,%xmm5
  mulss  %xmm3,%xmm6
  movss  %xmm7,0xc(%rsp)
  addss  %xmm5,%xmm0
  movss  D364(%rip),%xmm5
  addss  0x10(%rsp),%xmm0
  addss  0x14(%rsp),%xmm0
  addss  0x18(%rsp),%xmm0
  mulss  %xmm1,%xmm5
  mulss  D83(%rip),%xmm1
  mulss  %xmm2,%xmm5
  mulss  %xmm2,%xmm1
  mulss  %xmm5,%xmm4
  addss  %xmm4,%xmm0
  addss  %xmm6,%xmm0
  addss  0x1c(%rsp),%xmm0
  addss  %xmm1,%xmm0
  call   <pow@plt>
  mulss  0xc(%rsp),%xmm0
  addss  (%rsp),%xmm0
  call   <sqrt@plt>
  movss  0x6c(%rsp),%xmm15
  jmp    L33
  nopl   0x0(%rax)
L45:
  pxor   %xmm10,%xmm10
  movaps %xmm10,%xmm0
  movaps %xmm10,%xmm9
  movaps %xmm10,%xmm8
  movaps %xmm10,%xmm5
  jmp    L55
L31:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: tag: D388
datatype: byte[4]
name: unpack_data
arguments: tag: D202
datatype: f32
name: unpack_data
arguments: tag: D466
datatype: f32
name: unpack_data
arguments: tag: D294
datatype: f32
name: unpack_data
arguments: tag: D375
datatype: byte[4]
name: unpack_data
arguments: tag: D1
datatype: byte[4]
name: unpack_data
arguments: tag: D73
datatype: byte[4]
name: unpack_data
arguments: tag: D76
datatype: byte[4]
name: unpack_data
arguments: tag: D49
datatype: byte[4]
name: unpack_data
arguments: tag: D416
datatype: byte[4]
name: unpack_data
arguments: tag: D484
datatype: byte[4]
name: unpack_data
arguments: tag: D4
datatype: byte[4]
name: unpack_data
arguments: tag: D480
datatype: byte[4]
name: unpack_data
arguments: tag: D33
datatype: byte[4]
name: unpack_data
arguments: tag: D382
datatype: byte[4]
name: unpack_data
arguments: tag: D419
datatype: byte[4]
name: unpack_data
arguments: tag: D295
datatype: byte[4]
name: unpack_data
arguments: tag: D431
datatype: byte[4]
name: unpack_data
arguments: tag: D80
datatype: byte[4]
name: unpack_data
arguments: tag: D270
datatype: byte[4]
name: unpack_data
arguments: tag: D345
datatype: byte[4]
name: unpack_data
arguments: tag: D437
datatype: byte[4]
name: unpack_data
arguments: tag: D118
datatype: byte[4]
name: unpack_data
arguments: tag: D214
datatype: byte[4]
name: unpack_data
arguments: tag: D155
datatype: byte[4]
name: unpack_data
arguments: tag: D366
datatype: byte[4]
name: unpack_data
arguments: tag: D462
datatype: byte[4]
name: unpack_data
arguments: tag: D206
datatype: byte[4]
name: unpack_data
arguments: tag: D255
datatype: byte[4]
name: unpack_data
arguments: tag: D62
datatype: byte[4]
name: unpack_data
arguments: tag: D11
datatype: byte[4]
name: unpack_data
arguments: tag: D385
datatype: byte[4]
name: unpack_data
arguments: tag: D356
datatype: byte[4]
name: unpack_data
arguments: tag: D311
datatype: byte[4]
name: unpack_data
arguments: tag: D364
datatype: byte[4]
name: unpack_data
arguments: tag: D83
datatype: byte[4]

tool: {"D388": [0x89,0x88,0x88,0x3d]}

tool: D202: 18

tool: D466: 15

tool: D294: 1

tool: {"D375": [0x07,0x9b,0x0e,0x3c]}

tool: {"D1": [0xb4,0xa7,0x33,0x39]}

tool: {"D73": [0x6d,0xe7,0x8f,0x41]}

tool: {"D76": [0x99,0x90,0x9d,0xbb]}

tool: {"D49": [0x04,0xf4,0xaa,0xbb]}

tool: {"D416": [0xc0,0x92,0x1d,0xb7]}

tool: {"D484": [0x2c,0x48,0xfd,0xb8]}

tool: {"D4": [0xe1,0x2f,0xf8,0xb8]}

tool: {"D480": [0xb4,0xb4,0x5f,0x39]}

tool: {"D33": [0x79,0x65,0x3c,0x3b]}

tool: {"D382": [0xb7,0xb2,0x8c,0x3d]}

tool: {"D419": [0xeb,0x93,0x9f,0xb9]}

tool: {"D295": [0x6c,0x8c,0x69,0xbd]}

tool: {"D431": [0x5e,0x5a,0x9e,0x36]}

tool: {"D80": [0x0b,0xd7,0x4d,0x38]}

tool: {"D270": [0xac,0x71,0xf8,0xb7]}

tool: {"D345": [0x7e,0x89,0x32,0x39]}

tool: {"D437": [0xa6,0x3b,0x86,0x38]}

tool: {"D118": [0xe0,0x2b,0x1a,0xb8]}

tool: {"D214": [0x2f,0x3b,0xa5,0x38]}

tool: {"D155": [0x76,0x9f,0xc1,0xb8]}

tool: {"D366": [0x2c,0x48,0x7d,0xb9]}

tool: {"D462": [0x6c,0x8c,0x69,0x3d]}

tool: {"D206": [0xac,0x71,0xf8,0x37]}

tool: {"D255": [0xc0,0x92,0x9d,0xb7]}

tool: {"D62": [0xe0,0x5d,0x6f,0xba]}

tool: {"D11": [0xb4,0xa7,0xb3,0x39]}

tool: {"D385": [0xb4,0xb4,0xdf,0x39]}

tool: {"D356": [0x7e,0x89,0xb2,0x39]}

tool: {"D311": [0xc6,0xd8,0x77,0x39]}

tool: {"D364": [0xe0,0x2b,0x9a,0xb8]}

tool: {"D83": [0x76,0x9f,0x41,0xb9]}

assistant: ```c
float target_phi(float *x, float *dx, int m) {
  int ncoeff = 20;
  float avdat = 0.4721577E-05;
  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, 0.17988E+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] = {-0.22899476E-08, -0.57018682E-01, 0.68700247E-01, 0.28747006E-02, -0.52170772E-02, -0.48084971E-02, 0.87039536E-02, 0.49076083E-04, -0.29616836E-04, -0.11834480E-03, 0.17026623E-03, -0.12077423E-03, 0.17133245E-03, -0.93920971E-05, 0.21334254E-03, -0.30437051E-03, -0.36757323E-04, 0.78788369E-04, 0.64007283E-04, -0.92326591E-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 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 x43 = x42 * 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] * x21 * x31 * x41 + coeff[10] * x31 * x42 + coeff[11] * x12 * x21 * x31 + coeff[12] * x11 * x21 * x32 + coeff[13] * x11 * x22 * x41 + coeff[14] * x11 * x32 * x41 + coeff[15] * x33 * x41 + coeff[16] * x11 * x21 * x42;
  v_target_phi = v_target_phi + coeff[17] * x31 * x43 + coeff[18] * x11 * x21 * x41 + coeff[19] * x11 * x42;
  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 + 2 * coeff[11] * x11 * x21 * x31 + coeff[12] * x21 * x32 + coeff[13] * x22 * x41 + coeff[14] * x32 * x41 + coeff[16] * x21 * x42 + coeff[18] * x21 * x41 + coeff[19] * x42, 2) + dx2 * dx2 * pow(0 + coeff[3] * x11 + coeff[4] * x31 + coeff[8] + coeff[9] * x31 * x41 + coeff[11] * x12 * x31 + coeff[12] * x11 * x32 + 2 * coeff[13] * x21 * x11 * x41 + coeff[16] * x11 * x42 + coeff[18] * x11 * x41, 2) + dx3 * dx3 * pow(0 + coeff[2] + coeff[4] * x21 + coeff[6] * x41 + coeff[9] * x21 * x41 + coeff[10] * x42 + coeff[11] * x12 * x21 + 2 * coeff[12] * x31 * x11 * x21 + 2 * coeff[14] * x31 * x11 * x41 + 3 * coeff[15] * x32 * x41 + coeff[17] * x43, 2) + dx4 * dx4 * pow(0 + coeff[5] * x11 + coeff[6] * x31 + coeff[7] + coeff[9] * x21 * x31 + 2 * coeff[10] * x41 * x31 + coeff[13] * x11 * x22 + coeff[14] * x11 * x32 + coeff[15] * x33 + 2 * coeff[16] * x41 * x11 * x21 + 3 * coeff[17] * x42 * x31 + coeff[18] * x11 * x21 + 2 * coeff[19] * x41 * x11, 2));
  dx[0] = dv_target_phi;
  return v_target_phi;
}
```