user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<fnkCa>:
  endbr64
  sub    $0x68,%rsp
  movapd %xmm0,%xmm10
  addsd  %xmm0,%xmm0
  movapd %xmm1,%xmm13
  movsd  0x78(%rsp),%xmm1
  movapd %xmm2,%xmm12
  movapd %xmm3,%xmm14
  subsd  %xmm10,%xmm14
  movsd  0x70(%rsp),%xmm8
  movapd %xmm4,%xmm2
  movapd %xmm5,%xmm3
  subsd  %xmm0,%xmm12
  subsd  %xmm0,%xmm1
  movapd %xmm6,%xmm4
  movsd  %xmm10,0x50(%rsp)
  movapd %xmm13,%xmm6
  movapd %xmm8,%xmm5
  movsd  %xmm13,0x48(%rsp)
  movsd  %xmm14,0x40(%rsp)
  movsd  %xmm1,(%rsp)
  movapd %xmm12,%xmm0
  movapd %xmm14,%xmm1
  movsd  %xmm7,0x58(%rsp)
  movsd  %xmm4,0x20(%rsp)
  movsd  %xmm3,0x18(%rsp)
  movsd  %xmm2,0x10(%rsp)
  movsd  %xmm12,0x8(%rsp)
  call   <CE_MP_pH@plt>
  movsd  0x8(%rsp),%xmm12
  movsd  0x70(%rsp),%xmm8
  movsd  0x10(%rsp),%xmm2
  movsd  0x20(%rsp),%xmm4
  movsd  %xmm0,0x8(%rsp)
  movsd  0x18(%rsp),%xmm3
  movapd %xmm8,%xmm5
  movapd %xmm12,%xmm1
  movsd  %xmm12,0x10(%rsp)
  movsd  %xmm2,0x28(%rsp)
  call   <CE_pHM_HCO3@plt>
  movsd  0x10(%rsp),%xmm12
  movsd  0x70(%rsp),%xmm8
  movsd  0x8(%rsp),%xmm11
  movsd  0x28(%rsp),%xmm2
  movsd  %xmm0,0x38(%rsp)
  movsd  0x18(%rsp),%xmm3
  movsd  0x20(%rsp),%xmm4
  movapd %xmm12,%xmm1
  movapd %xmm8,%xmm5
  movapd %xmm11,%xmm0
  movsd  %xmm2,0x30(%rsp)
  movsd  %xmm12,0x28(%rsp)
  movsd  %xmm11,0x10(%rsp)
  call   <CE_pHM_CO3@plt>
  movsd  0x10(%rsp),%xmm11
  movsd  D15(%rip),%xmm7
  movsd  %xmm0,0x8(%rsp)
  subsd  %xmm11,%xmm7
  movsd  D16(%rip),%xmm11
  movapd %xmm11,%xmm0
  cvttsd2si %xmm7,%edi
  call   <pow@plt>
  movsd  0x70(%rsp),%xmm8
  movsd  0x20(%rsp),%xmm4
  movapd %xmm0,%xmm7
  movsd  0x38(%rsp),%xmm6
  movsd  D44(%rip),%xmm0
  divsd  %xmm8,%xmm7
  movsd  0x8(%rsp),%xmm9
  movsd  %xmm4,0x8(%rsp)
  mulsd  %xmm8,%xmm8
  mulsd  %xmm0,%xmm6
  addsd  %xmm9,%xmm9
  addsd  %xmm6,%xmm9
  mulsd  %xmm7,%xmm8
  movapd %xmm7,%xmm5
  movapd %xmm4,%xmm7
  mulsd  %xmm0,%xmm5
  divsd  %xmm8,%xmm7
  addsd  %xmm5,%xmm9
  mulsd  %xmm7,%xmm0
  addsd  %xmm0,%xmm9
  movsd  (%rsp),%xmm0
  addsd  %xmm9,%xmm0
  call   <CE_Activity@plt>
  movsd  0x48(%rsp),%xmm13
  movsd  0x40(%rsp),%xmm14
  movsd  0x8(%rsp),%xmm4
  movsd  0x30(%rsp),%xmm2
  movapd %xmm0,%xmm5
  movsd  %xmm0,0x10(%rsp)
  movsd  0x18(%rsp),%xmm3
  movapd %xmm13,%xmm6
  movapd %xmm14,%xmm1
  movsd  0x28(%rsp),%xmm12
  movsd  %xmm4,0x20(%rsp)
  movapd %xmm12,%xmm0
  movsd  %xmm2,0x8(%rsp)
  movsd  %xmm12,(%rsp)
  call   <CE_MP_pH@plt>
  movsd  (%rsp),%xmm12
  movsd  0x20(%rsp),%xmm4
  movsd  0x18(%rsp),%xmm3
  movsd  0x8(%rsp),%xmm2
  movsd  %xmm0,(%rsp)
  movsd  0x10(%rsp),%xmm5
  movapd %xmm12,%xmm1
  movsd  %xmm4,0x28(%rsp)
  movsd  %xmm3,0x20(%rsp)
  movsd  %xmm2,0x18(%rsp)
  movsd  %xmm12,0x8(%rsp)
  call   <CE_pHM_HCO3@plt>
  movsd  (%rsp),%xmm6
  movsd  0x8(%rsp),%xmm12
  movsd  0x10(%rsp),%xmm5
  movsd  0x28(%rsp),%xmm4
  movsd  0x20(%rsp),%xmm3
  movsd  0x18(%rsp),%xmm2
  movapd %xmm12,%xmm1
  movapd %xmm6,%xmm0
  movsd  %xmm6,0x8(%rsp)
  call   <CE_pHM_CO3@plt>
  movsd  0x8(%rsp),%xmm6
  movsd  D15(%rip),%xmm1
  mov    D16(%rip),%rax
  movsd  %xmm0,(%rsp)
  subsd  %xmm6,%xmm1
  movq   %rax,%xmm0
  cvttsd2si %xmm1,%edi
  call   <pow@plt>
  movsd  0x10(%rsp),%xmm5
  mov    $0x8,%edi
  movapd %xmm5,%xmm0
  call   <pow@plt>
  movsd  0x58(%rsp),%xmm7
  movsd  0x50(%rsp),%xmm10
  divsd  %xmm0,%xmm7
  divsd  (%rsp),%xmm7
  addsd  %xmm10,%xmm7
  add    $0x68,%rsp
  movapd %xmm7,%xmm0
  ret
```

tool_calls: name: read_data
arguments: data_label: D15
datatype: byte[8]
name: read_data
arguments: data_label: D16
datatype: byte[8]
name: read_data
arguments: data_label: D44
datatype: byte[8]

tool: {"D15": [0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x40]}

tool: {"D16": [0x00,0x00,0x00,0x00,0x00,0x00,0x24,0x40]}

tool: {"D44": [0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x3f]}

assistant: ```c
double fnkCa(double dCa, double pH0, double M, double P, double K1, double K2, double Kw, double Ks, double f0, double IB) {
  double pH, HCO3, CO3, H3O, OH, IS, Ca, f;
  M = M - 2 * dCa;
  P = P - dCa;
  IB = IB - 2 * dCa;
  pH = CE_MP_pH(M, P, K1, K2, Kw, f0, pH0);
  HCO3 = CE_pHM_HCO3(pH, M, K1, K2, Kw, f0);
  CO3 = CE_pHM_CO3(pH, M, K1, K2, Kw, f0);
  H3O = pow(10, (3 - pH)) / f0;
  OH = Kw / (f0 * f0 * H3O);
  IS = IB + (2 * CO3 + HCO3 / 2 + H3O / 2 + OH / 2);
  f = CE_Activity(IS);
  pH = CE_MP_pH(M, P, K1, K2, Kw, f, pH0);
  HCO3 = CE_pHM_HCO3(pH, M, K1, K2, Kw, f);
  CO3 = CE_pHM_CO3(pH, M, K1, K2, Kw, f);
  H3O = pow(10, (3 - pH)) / f;
  OH = Kw / (f * f0 * H3O);
  Ca = Ks / (pow(f, 8)) / CO3 + dCa;
  return Ca;
}
```