user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  add    $0xffffffffffffff80,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    D130(%rip),%rax
  mov    %rax,%rsi
  lea    D65(%rip),%rax
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0x68(%rbp)
  cmpq   $0x0,-0x68(%rbp)
  jne    L32
  lea    D138(%rip),%rax
  mov    %rax,%rdi
  call   <nrerror@plt>
L32:
  mov    -0x68(%rbp),%rdx
  lea    -0x60(%rbp),%rax
  mov    $0x50,%esi
  mov    %rax,%rdi
  call   <fgets@plt>
  jmp    L28
L4:
  mov    -0x68(%rbp),%rdx
  lea    -0x60(%rbp),%rax
  mov    $0x50,%esi
  mov    %rax,%rdi
  call   <fgets@plt>
  mov    -0x68(%rbp),%rax
  mov    %rax,%rdi
  call   <feof@plt>
  test   %rax,%rax
  je     L28
  lea    D1(%rip),%rax
  mov    %rax,%rdi
  call   <nrerror@plt>
L28:
  lea    -0x60(%rbp),%rax
  mov    $0x17,%edx
  lea    D40(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  jne    L4
  lea    -0x7c(%rbp),%rdx
  mov    -0x68(%rbp),%rax
  lea    D117(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fscanf@plt>
  lea    -0x60(%rbp),%rax
  mov    %rax,%rsi
  lea    D100(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D48(%rip),%r8
  lea    D19(%rip),%rax
  mov    %rax,%rcx
  lea    D83(%rip),%rax
  mov    %rax,%rdx
  lea    D7(%rip),%rax
  mov    %rax,%rsi
  lea    D16(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movl   $0x1,-0x6c(%rbp)
  jmp    L59
L60:
  lea    -0x74(%rbp),%rsi
  lea    -0x70(%rbp),%rcx
  lea    -0x78(%rbp),%rdx
  mov    -0x68(%rbp),%rax
  mov    %rsi,%r8
  lea    D77(%rip),%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <fscanf@plt>
  mov    -0x70(%rbp),%edx
  mov    -0x78(%rbp),%eax
  movd   %edx,%xmm0
  mov    %eax,%edi
  call   <expint@plt>
  movq   %xmm0,%rcx
  movss  -0x74(%rbp),%xmm0
  cvtss2sd %xmm0,%xmm0
  movss  -0x70(%rbp),%xmm1
  pxor   %xmm3,%xmm3
  cvtss2sd %xmm1,%xmm3
  movq   %xmm3,%rdx
  mov    -0x78(%rbp),%eax
  movq   %rcx,%xmm2
  movapd %xmm0,%xmm1
  movq   %rdx,%xmm0
  mov    %eax,%esi
  lea    D81(%rip),%rax
  mov    %rax,%rdi
  mov    $0x3,%eax
  call   <printf@plt>
  addl   $0x1,-0x6c(%rbp)
L59:
  mov    -0x7c(%rbp),%eax
  cmp    %eax,-0x6c(%rbp)
  jle    L60
  mov    -0x68(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L36
  call   <__stack_chk_fail@plt>
L36:
  leave
  ret
```

tool_calls: name: parse_data
arguments: data_tag: D130
type_infered: string
name: parse_data
arguments: data_tag: D65
type_infered: string
name: parse_data
arguments: data_tag: D138
type_infered: string
name: parse_data
arguments: data_tag: D1
type_infered: string
name: parse_data
arguments: data_tag: D40
type_infered: string
name: parse_data
arguments: data_tag: D117
type_infered: string
name: parse_data
arguments: data_tag: D100
type_infered: string
name: parse_data
arguments: data_tag: D48
type_infered: string
name: parse_data
arguments: data_tag: D19
type_infered: string
name: parse_data
arguments: data_tag: D83
type_infered: string
name: parse_data
arguments: data_tag: D7
type_infered: string
name: parse_data
arguments: data_tag: D16
type_infered: string
name: parse_data
arguments: data_tag: D77
type_infered: string
name: parse_data
arguments: data_tag: D81
type_infered: string

tool: D130: r

tool: D65: fncval.dat

tool: D138: Data file fncval.dat not found


tool: D1: Data not found in fncval.dat


tool: D40: Exponential Integral En

tool: D117: %d %*s

tool: D100: 
%s


tool: D48: expint(n,x)

tool: D19: actual

tool: D83: x

tool: D7: n

tool: D16: %4s %7s %15s %21s 


tool: D77: %d %f %f

tool: D81: %4d %8.2f %18.6e %18.6e


assistant: ```c
int main(void) {
  char txt[80];
  int i, nval, n;
  float val, x;
  FILE *fp;
  if ((fp = fopen("fncval.dat", "r")) == NULL)
    nrerror("Data file fncval.dat not found\n");
  fgets(txt, 80, fp);
  while (strncmp(txt, "Exponential Integral En", 23)) {
    fgets(txt, 80, fp);
    if (feof(fp))
      nrerror("Data not found in fncval.dat\n");
  }
  fscanf(fp, "%d %*s", &nval);
  printf("\n%s\n", txt);
  printf("%4s %7s %15s %21s \n", "n", "x", "actual", "expint(n,x)");
  for (i = 1; i <= nval; i++) {
    fscanf(fp, "%d %f %f", &n, &x, &val);
    printf("%4d %8.2f %18.6e %18.6e\n", n, x, val, expint(n, x));
  }
  fclose(fp);
  return 0;
}
```