user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<calc_error>:
  endbr64
  push   %r13
  mov    %edx,%r13d
  push   %r12
  mov    %ecx,%r12d
  push   %rbp
  mov    %rdi,%rbp
  mov    %ecx,%edi
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x8,%rsp
  call   <is_double_rettype@plt>
  test   %rax,%rax
  mov    0x0(%rbp),%eax
  je     L108
  mov    %eax,%ecx
  and    $0x7ff00000,%ecx
  cmp    $0x7ff00000,%ecx
  je     L341
  mov    (%rbx),%edx
  mov    %edx,%esi
  and    $0x7ff00000,%esi
  cmp    $0x7ff00000,%esi
  je     L341
L196:
  xor    %edx,%eax
  js     L284
  mov    %r12d,%edi
  call   <is_double_rettype@plt>
  test   %rax,%rax
  jne    L395
  mov    0x4(%rbx),%eax
  mov    0x0(%rbp),%edx
  neg    %eax
  mov    %edx,%esi
  sete   %dil
  sub    (%rbx),%esi
  movzbl %dil,%ecx
  lea    -0x1(%rsi,%rcx,1),%esi
  xor    %ecx,%ecx
  cmp    %esi,%edx
  ja     L106
  sete   %cl
  movzbl %cl,%ecx
  and    %edi,%ecx
  sub    $0x1,%ecx
L106:
  test   %r13d,%r13d
  jle    L390
L228:
  cmp    $0x60,%r13d
  jg     L37
  mov    %ecx,%edx
  mov    %ecx,%r8d
  sar    $0x1f,%edx
  cmp    $0x1f,%r13d
  jle    L141
  sub    $0x20,%r13d
  mov    %edx,%r8d
  cmp    $0x1f,%r13d
  jle    L183
  cmp    $0x40,%r13d
  mov    %ecx,%eax
  mov    %edx,%esi
  cmove  %edx,%eax
L163:
  mov    %edx,%ecx
  and    $0x1f,%r13d
  jne    L141
L187:
  test   %edx,%edx
  js     L425
  cmp    $0x7ffff,%ecx
  ja     L284
  shr    $0x14,%eax
  shl    $0xc,%esi
  or     %eax,%esi
  mov    %rcx,%rax
  shl    $0x2c,%rax
  or     %rsi,%rax
  jmp    L226
  nopw   0x0(%rax,%rax,1)
L341:
  test   $0x800fffff,%eax
  jne    L103
  mov    0x4(%rbp),%r8d
  test   %r8d,%r8d
  jne    L103
  test   $0xfffff,%eax
  jne    L284
  mov    (%rbx),%edx
  jmp    L93
  nopl   0x0(%rax,%rax,1)
L103:
  mov    (%rbx),%edx
  test   $0x800fffff,%edx
  je     L335
L110:
  cmp    $0x7ff00000,%ecx
  je     L419
L383:
  test   $0xfffff,%eax
  jne    L284
  mov    0x4(%rbp),%esi
  test   %esi,%esi
  jne    L284
L93:
  test   $0xfffff,%edx
  jne    L284
  mov    0x4(%rbx),%ecx
  test   %ecx,%ecx
  je     L55
  nopw   0x0(%rax,%rax,1)
L284:
  mov    D3(%rip),%rax
  mov    (%rax),%rax
L226:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L108:
  mov    %eax,%edx
  and    $0x7f800000,%edx
  cmp    $0x7f800000,%edx
  je     L294
  mov    (%rbx),%edx
  mov    %edx,%ecx
  and    $0x7f800000,%ecx
  cmp    $0x7f800000,%ecx
  jne    L196
L257:
  test   $0x7fffff,%eax
  jne    L284
  mov    (%rbx),%edx
  test   $0x7fffff,%edx
  jne    L284
L55:
  cmp    %edx,%eax
  jne    L284
L37:
  xor    %eax,%eax
L429:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L395:
  mov    0x8(%rbx),%eax
  mov    0x4(%rbp),%ecx
  neg    %eax
  mov    %ecx,%esi
  sete   %dil
  sub    0x4(%rbx),%esi
  movzbl %dil,%edx
  lea    -0x1(%rsi,%rdx,1),%esi
  xor    %edx,%edx
  cmp    %esi,%ecx
  sete   %dl
  and    %edi,%edx
  cmp    %esi,%ecx
  mov    $0x1,%ecx
  cmova  %ecx,%edx
  mov    0x0(%rbp),%ecx
  sub    (%rbx),%ecx
  lea    -0x1(%rdx,%rcx,1),%ecx
  test   %r13d,%r13d
  jg     L228
L390:
  mov    %ecx,%edx
  jmp    L187
  nopl   (%rax)
L335:
  mov    0x4(%rbx),%edi
  test   %edi,%edi
  je     L383
  jmp    L110
L294:
  test   $0x807fffff,%eax
  je     L257
  mov    (%rbx),%edx
  test   $0x807fffff,%edx
  je     L257
  and    $0x7f800000,%edx
  cmp    $0x7f800000,%edx
  jne    L257
  jmp    L37
L425:
  xor    %edx,%edx
  xor    $0xffffffff,%eax
  sete   %dl
  mov    %edx,%edi
  sub    %ecx,%edx
  sub    %esi,%edi
  sub    $0x1,%edx
  sub    $0x1,%edi
  cmp    $0x7ffff,%edx
  ja     L284
  shr    $0x14,%eax
  shl    $0xc,%edi
  mov    %eax,%ecx
  mov    %rdx,%rax
  or     %edi,%ecx
  shl    $0x2c,%rax
  or     %rcx,%rax
  neg    %rax
  jmp    L226
  nopl   0x0(%rax)
L419:
  mov    %edx,%ecx
  and    $0x7ff00000,%ecx
  cmp    $0x7ff00000,%ecx
  jne    L383
  xor    %eax,%eax
  jmp    L429
  nopl   0x0(%rax,%rax,1)
L141:
  mov    $0x20,%edi
  mov    %r13d,%ecx
  mov    %esi,%ebx
  sub    %r13d,%edi
  shr    %cl,%eax
  mov    %edi,%ecx
  shl    %cl,%ebx
  mov    %r13d,%ecx
  shr    %cl,%esi
  or     %ebx,%eax
  mov    %edi,%ecx
  mov    %r8d,%ebx
  shl    %cl,%ebx
  mov    %r13d,%ecx
  shr    %cl,%r8d
  mov    %edi,%ecx
  or     %ebx,%esi
  shl    %cl,%edx
  mov    %edx,%ecx
  or     %r8d,%ecx
  mov    %ecx,%edx
  jmp    L187
  nopl   0x0(%rax)
L183:
  mov    %esi,%eax
  mov    %ecx,%esi
  jmp    L163
```

assistant: ```c
long long calc_error(unsigned a[2], unsigned b[3], int shift, int rettype) {
  unsigned r0, r1, r2;
  int sign, carry;
  long long result;
  if (is_double_rettype(rettype)) {
    if ((a[0] & 0x7FF00000) == 0x7FF00000 || (b[0] & 0x7FF00000) == 0x7FF00000) {
      if (((a[0] & 0x800FFFFF) || a[1]) && ((b[0] & 0x800FFFFF) || b[1]) && (a[0] & 0x7FF00000) == 0x7FF00000 && (b[0] & 0x7FF00000) == 0x7FF00000)
        return 0;
      if (!((a[0] & 0xFFFFF) || a[1]) && !((b[0] & 0xFFFFF) || b[1]) && a[0] == b[0])
        return 0;
      return LLONG_MAX;
    }
  } else {
    if ((a[0] & 0x7F800000) == 0x7F800000 || (b[0] & 0x7F800000) == 0x7F800000) {
      if ((a[0] & 0x807FFFFF) && (b[0] & 0x807FFFFF) && (a[0] & 0x7F800000) == 0x7F800000 && (b[0] & 0x7F800000) == 0x7F800000)
        return 0;
      if (!(a[0] & 0x7FFFFF) && !(b[0] & 0x7FFFFF) && a[0] == b[0])
        return 0;
      return LLONG_MAX;
    }
  }
  if ((a[0] ^ b[0]) & 0x80000000)
    return LLONG_MAX;
  if (is_double_rettype(rettype)) {
    r2 = -b[2];
    carry = (r2 == 0);
    r1 = a[1] + ~b[1] + carry;
    carry = (r1 < a[1] || (carry && r1 == a[1]));
    r0 = a[0] + ~b[0] + carry;
  } else {
    r2 = -b[1];
    carry = (r2 == 0);
    r1 = a[0] + ~b[0] + carry;
    carry = (r1 < a[0] || (carry && r1 == a[0]));
    r0 = ~0 + carry;
  }
  if (shift > 0) {
    if (shift > 32 * 3)
      return 0;
    while (shift >= 32) {
      r2 = r1;
      r1 = r0;
      r0 = -(r0 >> 31);
      shift -= 32;
    }
    if (shift > 0) {
      r2 = (r2 >> shift) | (r1 << (32 - shift));
      r1 = (r1 >> shift) | (r0 << (32 - shift));
      r0 = (r0 >> shift) | ((-(r0 >> 31)) << (32 - shift));
    }
  }
  if (r0 & 0x80000000) {
    sign = 1;
    r2 = ~r2;
    carry = (r2 == 0);
    r1 = 0 + ~r1 + carry;
    carry = (carry && (r2 == 0));
    r0 = 0 + ~r0 + carry;
  } else {
    sign = 0;
  }
  if (r0 >= (1LL << (31 - (12))))
    return LLONG_MAX;
  result = (r2 >> (32 - (12))) & ((1 << (12)) - 1);
  result |= r1 << (12);
  result |= (long long)r0 << (32 + (12));
  if (sign)
    result = -result;
  return result;
}
```