user: Please show me the C implementation that matches the assembly code listed below:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movb   $0x1,-0x16(%rbp)
  lea    -0x16(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <bu_bzero@plt>
  movzbl -0x16(%rbp),%eax
  test   %al,%al
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movb   $0xff,-0x16(%rbp)
  lea    -0x16(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <bu_bzero@plt>
  movzbl -0x16(%rbp),%eax
  test   %al,%al
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movb   $0x0,-0x16(%rbp)
  lea    -0x16(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <bu_fill@plt>
  movzbl -0x16(%rbp),%eax
  cmp    $0xff,%al
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movb   $0x17,-0x15(%rbp)
  lea    -0x15(%rbp),%rcx
  lea    -0x16(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_memcpy@plt>
  movzbl -0x16(%rbp),%eax
  cmp    $0x17,%al
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movb   $0x5a,-0x15(%rbp)
  lea    -0x15(%rbp),%rcx
  lea    -0x16(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_invert@plt>
  movb   $0xa5,-0x16(%rbp)
  mov    $0xa5,%edi
  call   <assert@plt>
  lea    -0x15(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_memcmp@plt>
  test   %rax,%rax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x15(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_equal@plt>
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x15(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_opposite@plt>
  test   %eax,%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movb   $0x7b,-0x15(%rbp)
  movb   $0x62,-0x16(%rbp)
  lea    -0x16(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_memcmp@plt>
  test   %rax,%rax
  setne  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x16(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_equal@plt>
  cmp    $0x1,%eax
  setne  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x16(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_opposite@plt>
  cmp    $0x1,%eax
  setne  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movb   $0x7b,-0x15(%rbp)
  movzbl -0x15(%rbp),%eax
  not    %eax
  mov    %al,-0x16(%rbp)
  lea    -0x16(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_memcmp@plt>
  test   %rax,%rax
  setne  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x16(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_equal@plt>
  cmp    $0x1,%eax
  setne  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    -0x16(%rbp),%rcx
  lea    -0x15(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <bu_opposite@plt>
  cmp    $0x1,%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movl   $0x35,-0x10(%rbp)
  movl   $0x0,-0x14(%rbp)
  mov    -0x10(%rbp),%ecx
  lea    -0x14(%rbp),%rax
  mov    $0x4,%edx
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <bu_memset@plt>
  mov    -0x14(%rbp),%eax
  cmp    $0x35353535,%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x10(%rbp),%ecx
  lea    -0x14(%rbp),%rax
  mov    $0x4,%edx
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <bu_isset@plt>
  mov    %eax,%edi
  call   <assert@plt>
  movl   $0x35000035,-0x14(%rbp)
  mov    -0x10(%rbp),%ecx
  lea    -0x14(%rbp),%rax
  mov    $0x4,%edx
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <bu_isset@plt>
  test   %eax,%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  movl   $0x1020304,-0x10(%rbp)
  movl   $0x1f2e3d4c,-0xc(%rbp)
  lea    -0xc(%rbp),%rdx
  lea    -0x10(%rbp),%rsi
  lea    -0x14(%rbp),%rax
  mov    $0x4,%ecx
  mov    %rax,%rdi
  call   <bu_xor@plt>
  mov    -0x14(%rbp),%eax
  cmp    $0x1e2c3e48,%eax
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  lea    D1(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L7
  call   <__stack_chk_fail@plt>
L7:
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: tag: D1
type_guessed: string

tool: D1: Done.


assistant: ```c
int main(int argc, char **argv) {
  unsigned char dst, src;
  int dsti, srci, src2i;
  dst = 1;
  bu_bzero(&dst, 1);
  assert(dst == 0);
  dst = 0xFF;
  bu_bzero(&dst, 1);
  assert(dst == 0x00);
  dst = 0x00;
  bu_fill(&dst, 1);
  assert(dst == 0xFF);
  src = 23;
  bu_memcpy(&dst, &src, 1);
  assert(dst == 23);
  src = 0x5A;
  bu_invert(&dst, &src, 1);
  assert(dst = 0xA5);
  assert(0 == bu_memcmp(&src, &src, 1));
  assert(bu_equal(&src, &src, 1));
  assert(!bu_opposite(&src, &src, 1));
  src = 123;
  dst = 98;
  assert(0 != bu_memcmp(&src, &dst, 1));
  assert(1 != bu_equal(&src, &dst, 1));
  assert(1 != bu_opposite(&src, &dst, 1));
  src = 123;
  dst = ~src;
  assert(0 != bu_memcmp(&src, &dst, 1));
  assert(1 != bu_equal(&src, &dst, 1));
  assert(1 == bu_opposite(&src, &dst, 1));
  srci = 0x35;
  dsti = 0;
  bu_memset(&dsti, srci, 4);
  assert(0x35353535 == dsti);
  assert(bu_isset(&dsti, srci, 4));
  dsti = 0x35000035;
  assert(!bu_isset(&dsti, srci, 4));
  srci = 0x01020304;
  src2i = 0x1F2E3D4C;
  bu_xor(&dsti, &srci, &src2i, 4);
  assert(dsti == 0x1E2C3E48);
  argc = argc;
  argv = argv;
  printf("Done.\n");
  return 0;
}
```