user: 这段汇编代码用C语言表示是什么样的：

```asm
<p1788_rev_lin>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %esi,-0x18(%rbp)
  mov    %edx,-0x1c(%rbp)
  mov    %rcx,-0x28(%rbp)
  mov    %r8,-0x30(%rbp)
  mov    %r9d,-0x20(%rbp)
  mov    D18(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,0x10(%rbp)
  je     L105
  mov    D13(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,0x10(%rbp)
  jne    L135
L105:
  mov    $0x1,%eax
  jmp    L101
L135:
  mov    $0x0,%eax
L101:
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x18(%rbp),%edx
  mov    -0x14(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <mpfr_cmp@plt>
  mov    D18(%rip),%rdx
  mov    (%rdx),%rdx
  cmp    %rdx,0x10(%rbp)
  jne    L106
  mov    $0x1,%edx
  jmp    L140
L106:
  mov    $0xffffffff,%edx
L140:
  cmp    %eax,%edx
  sete   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  mov    -0x1c(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_get_prec@plt>
  mov    %eax,%edx
  mov    -0x4(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <mpfr_init2@plt>
L91:
  mov    D18(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,0x10(%rbp)
  jne    L12
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_nextbelow@plt>
  jmp    L102
L12:
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_nextabove@plt>
L102:
  mov    -0x18(%rbp),%edx
  mov    -0x14(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <mpfr_cmp@plt>
  test   %eax,%eax
  je     L64
  mov    -0x20(%rbp),%r8d
  mov    -0x30(%rbp),%rdi
  mov    -0x28(%rbp),%rcx
  mov    -0x4(%rbp),%edx
  mov    -0x1c(%rbp),%esi
  mov    -0x14(%rbp),%eax
  mov    %r8d,%r9d
  mov    %rdi,%r8
  mov    %eax,%edi
  call   <cmp_rev@plt>
  neg    %eax
  mov    %eax,-0x8(%rbp)
  cmpl   $0x0,-0x8(%rbp)
  je     L16
  mov    D18(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,0x10(%rbp)
  jne    L28
  mov    -0x8(%rbp),%eax
  shr    $0x1f,%eax
  jmp    L127
L28:
  cmpl   $0x0,-0x8(%rbp)
  setg   %al
L127:
  test   %al,%al
  jne    L142
L64:
  mov    D18(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,0x10(%rbp)
  jne    L41
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_nextabove@plt>
  jmp    L87
L41:
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_nextbelow@plt>
  jmp    L87
L142:
  nop
  jmp    L91
L16:
  nop
L87:
  mov    -0x4(%rbp),%eax
  mov    %eax,%edi
  call   <mpfr_clear@plt>
  mov    -0x8(%rbp),%eax
  leave
  ret
```

assistant: ```c
int p1788_rev_lin(mpfr_ptr rop, mpfr_srcptr rlim, mpfr_srcptr op, int (*fwd_fun)(mpfr_ptr rop, mpfr_srcptr op, const void *env), const void *env, int decrease, mpfr_rnd_t rnd) {
  assert(rnd == MPFR_RNDU || rnd == MPFR_RNDD);
  assert(mpfr_cmp(rop, rlim) == (rnd == MPFR_RNDU ? 1 : -1));
  mpfr_t tmp_op;
  mpfr_init2(tmp_op, mpfr_get_prec(op));
  int t;
  for (;;) {
    if (rnd == MPFR_RNDU)
      mpfr_nextbelow(rop);
    else
      mpfr_nextabove(rop);
    if (mpfr_cmp(rop, rlim) != 0) {
      t = -cmp_rev(rop, op, tmp_op, fwd_fun, env, decrease);
      if (t == 0)
        break;
      if (rnd == MPFR_RNDU ? t < 0 : t > 0)
        continue;
    }
    if (rnd == MPFR_RNDU)
      mpfr_nextabove(rop);
    else
      mpfr_nextbelow(rop);
    break;
  }
  mpfr_clear(tmp_op);
  return t;
}
```