user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  sub    $0xe8,%rsp
  mov    $0x9,%edi
  mov    %fs:0x28,%rax
  mov    %rax,0xd8(%rsp)
  xor    %eax,%eax
  mov    D39(%rip),%rax
  mov    %rsp,%rcx
  movq   $0x0,0x80(%rsp)
  lea    0x90(%rsp),%rdx
  lea    0x40(%rsp),%rsi
  mov    %rax,0x40(%rsp)
  mov    D206(%rip),%rax
  mov    %rax,0x48(%rsp)
  mov    D11(%rip),%rax
  mov    %rax,0x50(%rsp)
  mov    D27(%rip),%rax
  mov    %rax,0x58(%rsp)
  mov    D125(%rip),%rax
  mov    %rax,0x60(%rsp)
  mov    D170(%rip),%rax
  mov    %rax,0x68(%rsp)
  mov    D29(%rip),%rax
  mov    %rax,0x70(%rsp)
  mov    D154(%rip),%rax
  mov    %rax,0x78(%rsp)
  mov    D31(%rip),%rax
  mov    %rax,0x90(%rsp)
  mov    D127(%rip),%rax
  mov    %rax,0x98(%rsp)
  mov    D147(%rip),%rax
  mov    %rax,0xa0(%rsp)
  mov    D191(%rip),%rax
  mov    %rax,0xa8(%rsp)
  mov    D19(%rip),%rax
  mov    %rax,0xb0(%rsp)
  mov    D111(%rip),%rax
  mov    %rax,0xb8(%rsp)
  mov    D2(%rip),%rax
  movsd  D205(%rip),%xmm0
  mov    %rax,0xc0(%rsp)
  mov    D4(%rip),%rax
  mov    %rax,0xc8(%rsp)
  mov    D181(%rip),%rax
  mov    %rax,0xd0(%rsp)
  call   <fittinglogt@plt>
  movsd  (%rsp),%xmm1
  movsd  0x8(%rsp),%xmm0
  lea    D94(%rip),%rdi
  mov    $0x2,%eax
  call   <printf@plt>
  movsd  0x18(%rsp),%xmm1
  movsd  0x10(%rsp),%xmm0
  lea    D199(%rip),%rdi
  mov    $0x2,%eax
  call   <printf@plt>
  movsd  0x30(%rsp),%xmm2
  movsd  0x28(%rsp),%xmm1
  lea    D150(%rip),%rdi
  movsd  0x20(%rsp),%xmm0
  mov    $0x3,%eax
  call   <printf@plt>
  xor    %eax,%eax
  call   <getch@plt>
  mov    0xd8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L7
  xor    %eax,%eax
  add    $0xe8,%rsp
  ret
L7:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D39
type_infered: f64
name: retrieve_data
arguments: tag: D206
type_infered: f64
name: retrieve_data
arguments: tag: D11
type_infered: f64
name: retrieve_data
arguments: tag: D27
type_infered: f64
name: retrieve_data
arguments: tag: D125
type_infered: f64
name: retrieve_data
arguments: tag: D170
type_infered: f64
name: retrieve_data
arguments: tag: D29
type_infered: f64
name: retrieve_data
arguments: tag: D154
type_infered: f64
name: retrieve_data
arguments: tag: D31
type_infered: f64
name: retrieve_data
arguments: tag: D127
type_infered: f64
name: retrieve_data
arguments: tag: D147
type_infered: f64
name: retrieve_data
arguments: tag: D191
type_infered: f64
name: retrieve_data
arguments: tag: D19
type_infered: f64
name: retrieve_data
arguments: tag: D111
type_infered: f64
name: retrieve_data
arguments: tag: D2
type_infered: f64
name: retrieve_data
arguments: tag: D205
type_infered: f64
name: retrieve_data
arguments: tag: D4
type_infered: f64
name: retrieve_data
arguments: tag: D181
type_infered: f64
name: retrieve_data
arguments: tag: D94
type_infered: string
name: retrieve_data
arguments: tag: D199
type_infered: string
name: retrieve_data
arguments: tag: D150
type_infered: string

tool: D39: 0.95

tool: D206: 0.93

tool: D11: 0.91

tool: D27: 0.69

tool: D125: 0.73

tool: D170: 0.66

tool: D29: 0.77

tool: D154: 0.83

tool: D31: 670

tool: D127: 310

tool: D147: 274

tool: D191: 197

tool: D19: 150

tool: D111: 71.3

tool: D2: 23.4

tool: D205: 10

tool: D4: 10.6

tool: D181: 5.8

tool: D94: 
a=%e b=%e  

tool: D199: 
q=%e s=%e  

tool: D150: 
umax=%e umin=%e u=%e 

assistant: ```c
main() {
  int n = 9;
  double x[9] = {0.95, 0.93, 0.91, 0.69, 0.73, 0.66, 0.77, 0.83};
  double y[9] = {670.0, 310.0, 274.0, 197.0, 150.0, 71.3, 23.4, 10.6, 5.8};
  double t = 10.0, a[7];
  fittinglogt(n, x, y, t, a);
  printf("\na=%e b=%e  ", a[1], a[0]);
  printf("\nq=%e s=%e  ", a[2], a[3]);
  printf("\numax=%e umin=%e u=%e ", a[4], a[5], a[6]);
  getch();
}
```