user: 请将以下的汇编代码转换成C语言代码：

```asm
<kernel__Char__to_i>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0xc0,%rsp
  mov    %edi,%eax
  mov    %al,-0xb4(%rbp)
  movb   $0x2d,-0xa2(%rbp)
  movzbl -0xb4(%rbp),%eax
  cmp    -0xa2(%rbp),%al
  sete   %al
  movzbl %al,%eax
  mov    %ax,-0x9e(%rbp)
  movzwl -0x9e(%rbp),%eax
  mov    %ax,-0x9c(%rbp)
  nop
  cmpw   $0x0,-0x9c(%rbp)
  je     L33
  movq   $0x1,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  neg    %rax
  mov    %rax,-0x10(%rbp)
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  nop
  mov    -0x8(%rbp),%rax
  mov    %rax,-0x98(%rbp)
  jmp    L19
L33:
  movsbl -0xb4(%rbp),%eax
  mov    %eax,%edi
  call   <kernel__Char__is_digit@plt>
  mov    %ax,-0x9a(%rbp)
  cmpw   $0x0,-0x9a(%rbp)
  je     L23
  movzbl -0xb4(%rbp),%eax
  movzbl %al,%eax
  mov    %rax,-0x48(%rbp)
  mov    -0x48(%rbp),%rax
  mov    %rax,-0x40(%rbp)
  nop
  movb   $0x30,-0x9f(%rbp)
  movzbl -0x9f(%rbp),%eax
  movzbl %al,%eax
  mov    %rax,-0x38(%rbp)
  mov    -0x38(%rbp),%rax
  mov    %rax,-0x30(%rbp)
  nop
  mov    -0x40(%rbp),%rax
  sub    -0x30(%rbp),%rax
  mov    %rax,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x20(%rbp)
  nop
  mov    -0x20(%rbp),%rax
  mov    %rax,-0x98(%rbp)
  jmp    L19
L23:
  movsbl -0xb4(%rbp),%eax
  mov    %eax,%edi
  call   <kernel__Char__to_lower@plt>
  mov    %al,-0xa1(%rbp)
  movzbl -0xa1(%rbp),%eax
  movzbl %al,%eax
  mov    %rax,-0x90(%rbp)
  mov    -0x90(%rbp),%rax
  mov    %rax,-0x88(%rbp)
  nop
  movb   $0x61,-0xa0(%rbp)
  movzbl -0xa0(%rbp),%eax
  movzbl %al,%eax
  mov    %rax,-0x80(%rbp)
  mov    -0x80(%rbp),%rax
  mov    %rax,-0x78(%rbp)
  nop
  mov    -0x88(%rbp),%rax
  sub    -0x78(%rbp),%rax
  mov    %rax,-0x70(%rbp)
  mov    -0x70(%rbp),%rax
  mov    %rax,-0x68(%rbp)
  nop
  movq   $0xa,-0x60(%rbp)
  mov    -0x68(%rbp),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x58(%rbp)
  mov    -0x58(%rbp),%rax
  mov    %rax,-0x50(%rbp)
  nop
  mov    -0x50(%rbp),%rax
  mov    %rax,-0x98(%rbp)
  nop
L19:
  mov    -0x98(%rbp),%rax
  leave
  ret
```

assistant: ```c
long kernel__Char__to_i(char self) {
  long var;
  char var1;
  short int var2;
  short int var4;
  long var5;
  long var6;
  long var8;
  short int var9;
  long var10;
  long var12;
  char var13;
  long var14;
  long var16;
  long var17;
  long var19;
  char var20;
  long var21;
  long var23;
  char var24;
  long var25;
  long var27;
  long var28;
  long var30;
  long var31;
  long var32;
  long var34;
  var1 = '-';
  {
    var4 = self == var1;
    var2 = var4;
    goto RET_LABEL3;
  RET_LABEL3:
    (void)0;
  }
  if (var2) {
    var5 = 1;
    {
      var8 = -var5;
      var6 = var8;
      goto RET_LABEL7;
    RET_LABEL7:
      (void)0;
    }
    var = var6;
    goto RET_LABEL;
  } else {
    var9 = kernel__Char__is_digit(self);
    if (var9) {
      {
        var12 = (unsigned char)self;
        var10 = var12;
        goto RET_LABEL11;
      RET_LABEL11:
        (void)0;
      }
      var13 = '0';
      {
        var16 = (unsigned char)var13;
        var14 = var16;
        goto RET_LABEL15;
      RET_LABEL15:
        (void)0;
      }
      {
        var19 = var10 - var14;
        var17 = var19;
        goto RET_LABEL18;
      RET_LABEL18:
        (void)0;
      }
      var = var17;
      goto RET_LABEL;
    } else {
      var20 = kernel__Char__to_lower(self);
      {
        var23 = (unsigned char)var20;
        var21 = var23;
        goto RET_LABEL22;
      RET_LABEL22:
        (void)0;
      }
      var24 = 'a';
      {
        var27 = (unsigned char)var24;
        var25 = var27;
        goto RET_LABEL26;
      RET_LABEL26:
        (void)0;
      }
      {
        var30 = var21 - var25;
        var28 = var30;
        goto RET_LABEL29;
      RET_LABEL29:
        (void)0;
      }
      var31 = 10;
      {
        var34 = var28 + var31;
        var32 = var34;
        goto RET_LABEL33;
      RET_LABEL33:
        (void)0;
      }
      var = var32;
      goto RET_LABEL;
    }
  }
RET_LABEL:;
  return var;
}
```