user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<e53toe>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r12
  push   %rbx
  sub    $0x40,%rsp
  mov    %rdi,-0x48(%rbp)
  mov    %rsi,-0x50(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  mov    -0x48(%rbp),%rbx
  movl   $0x0,-0x38(%rbp)
  lea    -0x30(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <ecleaz@plt>
  add    $0x6,%rbx
  movzwl (%rbx),%r12d
  movw   $0x0,-0x30(%rbp)
  mov    %r12d,%eax
  test   %ax,%ax
  jns    L28
  movw   $0xffff,-0x30(%rbp)
L28:
  mov    %r12d,%eax
  and    $0xf,%eax
  or     $0x10,%eax
  mov    %ax,-0x2c(%rbp)
  and    $0x7ff0,%r12w
  cmp    $0x7ff0,%r12w
  jne    L124
  mov    -0x48(%rbp),%rax
  add    $0x6,%rax
  movzwl (%rax),%eax
  movzwl %ax,%eax
  and    $0xf,%eax
  test   %eax,%eax
  jne    L111
  mov    -0x48(%rbp),%rax
  add    $0x4,%rax
  movzwl (%rax),%eax
  test   %ax,%ax
  jne    L111
  mov    -0x48(%rbp),%rax
  add    $0x2,%rax
  movzwl (%rax),%eax
  test   %ax,%ax
  jne    L111
  mov    -0x48(%rbp),%rax
  movzwl (%rax),%eax
  test   %ax,%ax
  je     L139
L111:
  mov    -0x50(%rbp),%rax
  mov    $0x50,%esi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <enan@plt>
  jmp    L25
L139:
  mov    -0x50(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <eclear@plt>
  mov    -0x50(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <einfin@plt>
  movzwl -0x30(%rbp),%eax
  test   %ax,%ax
  je     L34
  mov    -0x50(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <eneg@plt>
  jmp    L34
L124:
  shr    $0x4,%r12w
  test   %r12w,%r12w
  jne    L76
  movl   $0x1,-0x38(%rbp)
  movzwl -0x2c(%rbp),%eax
  and    $0xffffffef,%eax
  mov    %ax,-0x2c(%rbp)
L76:
  add    $0x3c00,%r12w
  mov    %r12w,-0x2e(%rbp)
  lea    -0x30(%rbp),%rax
  lea    0x6(%rax),%r12
  sub    $0x2,%rbx
  mov    %r12,%rax
  lea    0x2(%rax),%r12
  movzwl (%rbx),%edx
  mov    %dx,(%rax)
  sub    $0x2,%rbx
  mov    %r12,%rax
  lea    0x2(%rax),%r12
  movzwl (%rbx),%edx
  mov    %dx,(%rax)
  sub    $0x2,%rbx
  mov    %r12,%rax
  lea    0x2(%rax),%r12
  movzwl (%rbx),%edx
  mov    %dx,(%rax)
  lea    -0x30(%rbp),%rax
  mov    $0xfffffffb,%esi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <eshift@plt>
  cmpl   $0x0,-0x38(%rbp)
  je     L1
  lea    -0x30(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <enormlz@plt>
  mov    %eax,-0x34(%rbp)
  cmpl   $0x50,-0x34(%rbp)
  jle    L26
  lea    -0x30(%rbp),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <ecleazs@plt>
  jmp    L1
L26:
  movzwl -0x2e(%rbp),%eax
  mov    -0x34(%rbp),%edx
  sub    %edx,%eax
  add    $0x1,%eax
  mov    %ax,-0x2e(%rbp)
L1:
  mov    -0x50(%rbp),%rdx
  lea    -0x30(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <emovo@plt>
  jmp    L25
L34:
  nop
L25:
  mov    -0x18(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L74
  call   <__stack_chk_fail@plt>
L74:
  add    $0x40,%rsp
  pop    %rbx
  pop    %r12
  pop    %rbp
  ret
```

assistant: ```c
void e53toe(pe, y) unsigned short *pe, *y;
{
  register unsigned short r;
  register unsigned short *p, *e;
  unsigned short yy[(6 + 3)];
  int denorm, k;
  e = pe;
  denorm = 0;
  ecleaz(yy);
  e += 3;
  r = *e;
  yy[0] = 0;
  if (r & 0x8000)
    yy[0] = 0xffff;
  yy[2] = (r & 0x0f) | 0x10;
  r &= ~0x800f;
  if (r == 0x7ff0) {
    if (((pe[3] & 0xf) != 0) || (pe[2] != 0) || (pe[1] != 0) || (pe[0] != 0)) {
      enan(y, (((6 + 3) - 4) * 16));
      return;
    }
    eclear(y);
    einfin(y);
    if (yy[0])
      eneg(y);
    return;
  }
  r >>= 4;
  if (r == 0) {
    denorm = 1;
    yy[2] &= ~0x10;
  }
  r += (0x3fff) - 01777;
  yy[1] = r;
  p = &yy[2 + 1];
  *p++ = *(--e);
  *p++ = *(--e);
  *p++ = *(--e);
  (void)eshift(yy, -5);
  if (denorm) {
    if ((k = enormlz(yy)) > (((6 + 3) - 4) * 16))
      ecleazs(yy);
    else
      yy[1] -= (unsigned short)(k - 1);
  }
  emovo(yy, y);
}
```