user: 下面的汇编指令对应的C源代码是什么:

```asm
<xLarge_x>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x70,%rsp
  fld1
  fldt   0x20(%rbp)
  fdivrp %st,%st(1)
  fstpt  -0x30(%rbp)
  fldt   -0x30(%rbp)
  fstpt  -0x20(%rbp)
  movl   $0x0,-0x38(%rbp)
  fldt   0x10(%rbp)
  fldt   0x20(%rbp)
  fsubrp %st,%st(1)
  fld1
  fsubrp %st,%st(1)
  fnstcw -0x42(%rbp)
  movzwl -0x42(%rbp),%eax
  or     $0xc,%ah
  mov    %ax,-0x44(%rbp)
  fldcw  -0x44(%rbp)
  fistpl -0x60(%rbp)
  fldcw  -0x42(%rbp)
  mov    -0x60(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x34(%rbp)
  movl   $0x1,-0x38(%rbp)
  jmp    L3
L38:
  fildl  -0x38(%rbp)
  fldt   0x20(%rbp)
  faddp  %st,%st(1)
  fldt   0x10(%rbp)
  fdivp  %st,%st(1)
  fldt   -0x30(%rbp)
  fmulp  %st,%st(1)
  fstpt  -0x30(%rbp)
  fldt   -0x20(%rbp)
  fldt   -0x30(%rbp)
  faddp  %st,%st(1)
  fstpt  -0x20(%rbp)
  addl   $0x1,-0x38(%rbp)
L3:
  mov    -0x38(%rbp),%eax
  cmp    -0x34(%rbp),%eax
  jl     L38
  mov    $0x0,%eax
  call   <Gamma_Function_Max_Arg@plt>
  fldt   0x20(%rbp)
  fxch   %st(1)
  fcomip %st(1),%st
  fstp   %st(0)
  jb     L8
  push   0x28(%rbp)
  push   0x20(%rbp)
  push   0x18(%rbp)
  push   0x10(%rbp)
  call   <powl@plt>
  add    $0x20,%rsp
  fstpt  -0x60(%rbp)
  fldt   0x10(%rbp)
  fchs
  fstpt  -0x70(%rbp)
  mov    -0x70(%rbp),%rax
  mov    -0x68(%rbp),%edx
  push   %rdx
  push   %rax
  call   <expl@plt>
  add    $0x10,%rsp
  fldt   -0x60(%rbp)
  fmulp  %st,%st(1)
  fstpt  -0x60(%rbp)
  push   0x28(%rbp)
  push   0x20(%rbp)
  call   <xGamma_Function@plt>
  add    $0x10,%rsp
  fldt   -0x60(%rbp)
  fdivp  %st,%st(1)
  fstpt  -0x10(%rbp)
  fildl  -0x34(%rbp)
  fldt   0x20(%rbp)
  faddp  %st,%st(1)
  lea    -0x10(%rsp),%rsp
  fstpt  (%rsp)
  push   0x18(%rbp)
  push   0x10(%rbp)
  call   <xMedium_x@plt>
  add    $0x20,%rsp
  fldt   -0x10(%rbp)
  fldt   -0x20(%rbp)
  fmulp  %st,%st(1)
  faddp  %st,%st(1)
  jmp    L11
L8:
  push   -0x18(%rbp)
  push   -0x20(%rbp)
  call   <logl@plt>
  add    $0x10,%rsp
  fstpt  -0x60(%rbp)
  push   0x18(%rbp)
  push   0x10(%rbp)
  call   <logl@plt>
  add    $0x10,%rsp
  fldt   0x20(%rbp)
  fmulp  %st,%st(1)
  fldt   -0x60(%rbp)
  faddp  %st,%st(1)
  fldt   0x10(%rbp)
  fsubrp %st,%st(1)
  fstpt  -0x60(%rbp)
  push   0x28(%rbp)
  push   0x20(%rbp)
  call   <xLn_Gamma_Function@plt>
  add    $0x10,%rsp
  fldt   -0x60(%rbp)
  fsubp  %st,%st(1)
  lea    -0x10(%rsp),%rsp
  fstpt  (%rsp)
  call   <expl@plt>
  add    $0x10,%rsp
  fstpt  -0x60(%rbp)
  fildl  -0x34(%rbp)
  fldt   0x20(%rbp)
  faddp  %st,%st(1)
  lea    -0x10(%rsp),%rsp
  fstpt  (%rsp)
  push   0x18(%rbp)
  push   0x10(%rbp)
  call   <xMedium_x@plt>
  add    $0x20,%rsp
  fldt   -0x60(%rbp)
  faddp  %st,%st(1)
L11:
  leave
  ret
```

assistant: ```c
long double xLarge_x(long double x, long double nu) {
  long double temp = 1.0L / nu;
  long double sum = temp;
  long double coef;
  int i = 0;
  int n;
  n = (int)(x - nu - 1.0L) + 1;
  for (i = 1; i < n; i++) {
    temp *= x / (nu + i);
    sum += temp;
  }
  if (nu <= Gamma_Function_Max_Arg()) {
    coef = powl(x, nu) * expl(-x) / xGamma_Function(nu);
    return xMedium_x(x, nu + n) + coef * sum;
  } else {
    return expl(logl(sum) + nu * logl(x) - x - xLn_Gamma_Function(nu)) + xMedium_x(x, nu + n);
  }
}
```