user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<_printn>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x58,%rsp
  mov    %esi,%r13d
  mov    %edx,%r12d
  mov    %rcx,0x18(%rsp)
  mov    %r8,%rbp
  mov    %fs:0x28,%rax
  mov    %rax,0x48(%rsp)
  xor    %eax,%eax
  mov    %edx,%ecx
  and    $0x1a,%ecx
  movl   $0x0,0x2c(%rsp)
  test   $0x4,%dh
  je     L46
  test   $0x1,%dl
  je     L255
  test   %di,%di
  js     L253
L255:
  test   %rdi,%rdi
  js     L300
  movb   $0x2b,0xf(%rsp)
  test   $0x200,%r12d
  jne    L20
  mov    %r12d,%eax
  shr    $0x8,%eax
  and    $0x1,%eax
  shl    $0x5,%eax
  mov    %al,0xf(%rsp)
  jmp    L20
L253:
  movswl %di,%edi
  neg    %edi
  movslq %edi,%rdi
  movb   $0x2d,0xf(%rsp)
  jmp    L20
L300:
  neg    %rdi
  movb   $0x2d,0xf(%rsp)
  jmp    L20
L46:
  movb   $0x0,0xf(%rsp)
  test   $0x1,%dl
  je     L20
  movzwl %di,%edi
L20:
  lea    0x30(%rsp),%rbx
  mov    %ecx,%ecx
  lea    D1(%rip),%rsi
L6:
  add    $0x1,%rbx
  mov    %rdi,%rax
  mov    $0x0,%edx
  div    %rcx
  movzbl (%rsi,%rdx,1),%edx
  mov    %dl,-0x1(%rbx)
  mov    %rdi,%rdx
  mov    %rax,%rdi
  cmp    %rdx,%rcx
  jbe    L6
  lea    0x30(%rsp),%rax
  mov    %rbx,%r15
  sub    %rax,%r15
  mov    %r13d,%r14d
  sub    %r15d,%r14d
  cmpb   $0x0,0xf(%rsp)
  je     L248
  test   $0x20,%r12b
  jne    L238
  sub    $0x1,%r14d
  cmp    %r13d,%r15d
  setb   %r13b
  mov    %r12d,%r15d
  and    $0x40,%r15d
  jne    L250
  test   %r13b,%r13b
  je     L250
L306:
  lea    -0x1(%r14),%eax
  mov    %eax,0x14(%rsp)
  test   %r14d,%r14d
  je     L22
L322:
  mov    %r12d,%eax
  and    $0x20,%eax
  cmp    $0x1,%eax
  sbb    %eax,%eax
  and    $0xfffffff0,%eax
  add    $0x30,%eax
  mov    %eax,0x10(%rsp)
  mov    0x14(%rsp),%r13d
  lea    0x2c(%rsp),%r15
L189:
  lea    0x18(%rsp),%rsi
  mov    %r15,%rcx
  mov    %rbp,%rdx
  mov    0x10(%rsp),%edi
  call   <__put@plt>
  sub    $0x1,%r13d
  cmp    $0xffffffff,%r13d
  jne    L189
  mov    0x14(%rsp),%eax
  sub    %r14d,%eax
  mov    %eax,%r14d
  cmpb   $0x0,0xf(%rsp)
  je     L293
L348:
  mov    %r12d,%r15d
  and    $0x20,%r15d
  je     L65
  mov    $0x0,%r15d
  mov    $0x1,%r13d
  jmp    L136
L238:
  lea    0x2c(%rsp),%rcx
  lea    0x18(%rsp),%rsi
  movsbl 0xf(%rsp),%edi
  mov    %rbp,%rdx
  call   <__put@plt>
  sub    $0x1,%r14d
  cmp    %r13d,%r15d
  setb   %r13b
  mov    %r12d,%r15d
  and    $0x40,%r15d
  jne    L136
  test   %r13b,%r13b
  je     L136
  jmp    L306
L65:
  mov    $0x1,%r13d
L250:
  lea    0x2c(%rsp),%rcx
  lea    0x18(%rsp),%rsi
  movsbl 0xf(%rsp),%edi
  mov    %rbp,%rdx
  call   <__put@plt>
  jmp    L136
L293:
  mov    $0x0,%r15d
  mov    $0x1,%r13d
  jmp    L136
L32:
  lea    -0x1(%r14),%ebx
  test   %r14d,%r14d
  je     L235
  lea    0x2c(%rsp),%r12
L78:
  lea    0x18(%rsp),%rsi
  mov    %r12,%rcx
  mov    %rbp,%rdx
  mov    $0x20,%edi
  call   <__put@plt>
  sub    $0x1,%ebx
  cmp    $0xffffffff,%ebx
  jne    L78
  jmp    L235
L248:
  cmp    %r13d,%r15d
  setb   %r13b
  mov    %r12d,%r15d
  and    $0x40,%r15d
  sete   %al
  and    %r13b,%al
  jne    L217
L136:
  lea    0x2c(%rsp),%r12
L344:
  sub    $0x1,%rbx
  lea    0x18(%rsp),%rsi
  movsbl (%rbx),%edi
  mov    %r12,%rcx
  mov    %rbp,%rdx
  call   <__put@plt>
  lea    0x30(%rsp),%rax
  cmp    %rax,%rbx
  ja     L344
  test   %r15d,%r15d
  je     L235
  test   %r13b,%r13b
  jne    L32
L235:
  mov    0x2c(%rsp),%eax
  mov    0x48(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L187
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L22:
  mov    %eax,%r14d
  jmp    L348
L217:
  lea    -0x1(%r14),%ecx
  mov    %ecx,0x14(%rsp)
  test   %r14d,%r14d
  jne    L322
  mov    %r14d,%r15d
  mov    %ecx,%r14d
  mov    %eax,%r13d
  jmp    L136
L187:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_tag: D1
datatype: string

tool: D1: 0123456789abcdef

assistant: ```c
int _printn(unsigned long ul, unsigned int width, unsigned int flags, char *tbuf, char *ebuf) {
  char *p, buf[(sizeof(long) * 8 / 3) + 1];
  unsigned int len, pad;
  char sign = 0;
  unsigned int base = flags & 0x1a;
  int count = 0;
  if (flags & 0x400) {
    if ((flags & 0x01) && ((short)ul < 0)) {
      sign = '-';
      ul = -(short)ul;
    } else if ((long)ul < 0) {
      sign = '-';
      ul = -(long)ul;
    } else if (flags & 0x200) {
      sign = '+';
    } else if (flags & 0x100) {
      sign = ' ';
    }
  } else if (flags & 0x01)
    ul = (unsigned short)ul;
  p = buf;
  do {
    *p++ = "0123456789abcdef"[ul % base];
  } while (ul /= base);
  len = (unsigned int)(p - buf);
  pad = width - len;
  if (sign) {
    if (flags & 0x20)
      __put(sign, &tbuf, ebuf, &count);
    pad--;
  }
  if (!(flags & 0x40) && (width > len)) {
    while (pad--) {
      __put((flags & 0x20) ? '0' : ' ', &tbuf, ebuf, &count);
    }
  }
  if (sign && !(flags & 0x20))
    __put(sign, &tbuf, ebuf, &count);
  do {
    __put(*--p, &tbuf, ebuf, &count);
  } while (p > buf);
  if ((flags & 0x40) && (width > len)) {
    while (pad--) {
      __put(' ', &tbuf, ebuf, &count);
    }
  }
  return count;
}
```