user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x3f8,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x3e8(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rbx
  mov    $0x3e8,%edx
  lea    D79(%rip),%rsi
  mov    %rbx,%rdi
  call   <strncpy@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <atof@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  lea    D12(%rip),%r13
  mov    %r13,%rdx
  mov    $0x5,%esi
  lea    D80(%rip),%rbp
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <a2f@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  lea    D37(%rip),%r12
  mov    %r12,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x3e8,%edx
  lea    D5(%rip),%rsi
  mov    %rbx,%rdi
  call   <strncpy@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <atof@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r13,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <a2f@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r12,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x3e8,%edx
  lea    D0(%rip),%rsi
  mov    %rbx,%rdi
  call   <strncpy@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <atof@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r13,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <a2f@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r12,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x3e8,%edx
  lea    D34(%rip),%rsi
  mov    %rbx,%rdi
  call   <strncpy@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <atof@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r13,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <a2f@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r12,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x3e8,%edx
  lea    D28(%rip),%rsi
  mov    %rbx,%rdi
  call   <strncpy@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <atof@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r13,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <a2f@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r12,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x3e8,%edx
  lea    D69(%rip),%rsi
  mov    %rbx,%rdi
  call   <strncpy@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <atof@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r13,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <a2f@plt>
  mov    %eax,%r8d
  mov    %rbx,%r9
  mov    $0xc,%ecx
  mov    %r12,%rdx
  mov    $0x5,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    0x3e8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L2
  mov    $0x0,%eax
  add    $0x3f8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L2:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D79
data_type: string
name: extract_symbolic_data
arguments: data_label: D12
data_type: string
name: extract_symbolic_data
arguments: data_label: D80
data_type: string
name: extract_symbolic_data
arguments: data_label: D37
data_type: string
name: extract_symbolic_data
arguments: data_label: D5
data_type: string
name: extract_symbolic_data
arguments: data_label: D0
data_type: string
name: extract_symbolic_data
arguments: data_label: D34
data_type: string
name: extract_symbolic_data
arguments: data_label: D28
data_type: string
name: extract_symbolic_data
arguments: data_label: D69
data_type: string

tool: D79: 123.456

tool: D12: atof

tool: D80: %*s: %*g  string: %s


tool: D37: a2f

tool: D5: +123.456

tool: D0: -123.456

tool: D34: +123e-4

tool: D28: +13.0e4

tool: D69: -23.00001E+5

assistant: ```c
int main() {
  char s[1000];
  int w1 = 5;
  int w2 = 12;
  strncpy(s, "123.456", 1000);
  printf("%*s: %*g  string: %s\n", w1, "atof", w2, atof(s), s);
  printf("%*s: %*g  string: %s\n", w1, "a2f", w2, a2f(s), s);
  strncpy(s, "+123.456", 1000);
  printf("%*s: %*g  string: %s\n", w1, "atof", w2, atof(s), s);
  printf("%*s: %*g  string: %s\n", w1, "a2f", w2, a2f(s), s);
  strncpy(s, "-123.456", 1000);
  printf("%*s: %*g  string: %s\n", w1, "atof", w2, atof(s), s);
  printf("%*s: %*g  string: %s\n", w1, "a2f", w2, a2f(s), s);
  strncpy(s, "+123e-4", 1000);
  printf("%*s: %*g  string: %s\n", w1, "atof", w2, atof(s), s);
  printf("%*s: %*g  string: %s\n", w1, "a2f", w2, a2f(s), s);
  strncpy(s, "+13.0e4", 1000);
  printf("%*s: %*g  string: %s\n", w1, "atof", w2, atof(s), s);
  printf("%*s: %*g  string: %s\n", w1, "a2f", w2, a2f(s), s);
  strncpy(s, "-23.00001E+5", 1000);
  printf("%*s: %*g  string: %s\n", w1, "atof", w2, atof(s), s);
  printf("%*s: %*g  string: %s\n", w1, "a2f", w2, a2f(s), s);
}
```