user: What is the c source code of the assembly code below:

```asm
<check_simple_cast>:
  endbr64
  push   %r13
  lea    D56(%rip),%r13
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %r13,%rdi
  sub    $0x8,%rsp
  call   <strlen@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L83
L101:
  mov    $0x8,%eax
L60:
  mov    %eax,(%r12)
  xor    %eax,%eax
  cmpb   $0x73,0x1(%rbx)
  sete   %al
  mov    %eax,0x0(%rbp)
  xor    %eax,%eax
L49:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L83:
  lea    D46(%rip),%r13
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  test   %eax,%eax
  je     L101
  lea    D10(%rip),%r13
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L52
L10:
  mov    $0x10,%eax
  jmp    L60
  nopw   0x0(%rax,%rax,1)
L52:
  lea    D69(%rip),%r13
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  test   %eax,%eax
  je     L10
  lea    D18(%rip),%r13
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L55
L34:
  mov    $0x20,%eax
  jmp    L60
L55:
  lea    D20(%rip),%r13
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  test   %eax,%eax
  je     L34
  lea    D12(%rip),%r13
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  test   %eax,%eax
  jne    L76
L4:
  mov    $0x40,%eax
  jmp    L60
L76:
  lea    D68(%rip),%r13
  mov    %r13,%rdi
  call   <strlen@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  test   %eax,%eax
  je     L4
  or     $0xffffffff,%eax
  jmp    L49
```

tool_calls: name: disassemble_data
arguments: data_label: D56
type: string
name: disassemble_data
arguments: data_label: D46
type: string
name: disassemble_data
arguments: data_label: D10
type: string
name: disassemble_data
arguments: data_label: D69
type: string
name: disassemble_data
arguments: data_label: D18
type: string
name: disassemble_data
arguments: data_label: D20
type: string
name: disassemble_data
arguments: data_label: D12
type: string
name: disassemble_data
arguments: data_label: D68
type: string

tool: D56: (s8)

tool: D46: (u8)

tool: D10: (s16)

tool: D69: (u16)

tool: D18: (s32)

tool: D20: (u32)

tool: D12: (s64)

tool: D68: (u64)

assistant: ```c
int check_simple_cast(const char *cast, int *bits, int *is_signed) {
  if (!strncmp(cast, "(s8)", strlen("(s8)")) || !strncmp(cast, "(u8)", strlen("(u8)")))
    *bits = 8;
  else if (!strncmp(cast, "(s16)", strlen("(s16)")) || !strncmp(cast, "(u16)", strlen("(u16)")))
    *bits = 16;
  else if (!strncmp(cast, "(s32)", strlen("(s32)")) || !strncmp(cast, "(u32)", strlen("(u32)")))
    *bits = 32;
  else if (!strncmp(cast, "(s64)", strlen("(s64)")) || !strncmp(cast, "(u64)", strlen("(u64)")))
    *bits = 64;
  else
    return -1;
  *is_signed = cast[1] == 's' ? 1 : 0;
  return 0;
}
```