user: Converte this assembly snippet into its equivalent C code:

```asm
<strtoll>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %edx,-0x44(%rbp)
  cmpl   $0x0,-0x44(%rbp)
  js     L377
  cmpl   $0x1,-0x44(%rbp)
  je     L377
  cmpl   $0x24,-0x44(%rbp)
  jle    L135
L377:
  cmpq   $0x0,-0x40(%rbp)
  je     L99
  mov    -0x40(%rbp),%rax
  mov    -0x38(%rbp),%rdx
  mov    %rdx,(%rax)
L99:
  mov    D43(%rip),%rax
  mov    (%rax),%edx
  mov    D57(%rip),%rax
  mov    %edx,(%rax)
  mov    $0x0,%eax
  jmp    L6
L135:
  mov    -0x38(%rbp),%rax
  mov    %rax,-0x18(%rbp)
L201:
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x28(%rbp)
  mov    -0x28(%rbp),%eax
  mov    %eax,%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L201
  cmpl   $0x2d,-0x28(%rbp)
  jne    L328
  movl   $0x1,-0x24(%rbp)
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,-0x28(%rbp)
  jmp    L423
L328:
  movl   $0x0,-0x24(%rbp)
  cmpl   $0x2b,-0x28(%rbp)
  jne    L423
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,-0x28(%rbp)
L423:
  cmpl   $0x0,-0x44(%rbp)
  je     L206
  cmpl   $0x10,-0x44(%rbp)
  jne    L164
L206:
  cmpl   $0x30,-0x28(%rbp)
  jne    L164
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x78,%al
  je     L93
  mov    -0x18(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x58,%al
  jne    L164
L93:
  mov    -0x18(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,-0x28(%rbp)
  addq   $0x2,-0x18(%rbp)
  movl   $0x10,-0x44(%rbp)
L164:
  cmpl   $0x0,-0x44(%rbp)
  jne    L388
  cmpl   $0x30,-0x28(%rbp)
  jne    L0
  mov    $0x8,%eax
  jmp    L249
L0:
  mov    $0xa,%eax
L249:
  mov    %eax,-0x44(%rbp)
L388:
  cmpl   $0x0,-0x24(%rbp)
  je     L82
  mov    D51(%rip),%rax
  mov    (%rax),%rax
  jmp    L50
L82:
  mov    D68(%rip),%rax
  mov    (%rax),%rax
L50:
  mov    %rax,-0x8(%rbp)
  mov    -0x44(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x8(%rbp),%rax
  cqto
  idiv   %rcx
  mov    %rdx,%rax
  mov    %eax,-0x1c(%rbp)
  mov    -0x44(%rbp),%eax
  movslq %eax,%rsi
  mov    -0x8(%rbp),%rax
  cqto
  idiv   %rsi
  mov    %rax,-0x8(%rbp)
  cmpl   $0x0,-0x24(%rbp)
  je     L306
  cmpl   $0x0,-0x1c(%rbp)
  jle    L267
  mov    -0x44(%rbp),%eax
  sub    %eax,-0x1c(%rbp)
  addq   $0x1,-0x8(%rbp)
L267:
  negl   -0x1c(%rbp)
L306:
  movq   $0x0,-0x10(%rbp)
  movl   $0x0,-0x20(%rbp)
L357:
  mov    -0x28(%rbp),%eax
  mov    %eax,%edi
  call   <isdigit@plt>
  test   %rax,%rax
  je     L300
  subl   $0x30,-0x28(%rbp)
  jmp    L1
L300:
  mov    -0x28(%rbp),%eax
  mov    %eax,%edi
  call   <isalpha@plt>
  test   %rax,%rax
  je     L213
  mov    -0x28(%rbp),%eax
  mov    %eax,%edi
  call   <isupper@plt>
  test   %rax,%rax
  je     L237
  mov    $0x37,%eax
  jmp    L179
L237:
  mov    $0x57,%eax
L179:
  sub    %eax,-0x28(%rbp)
L1:
  mov    -0x28(%rbp),%eax
  cmp    -0x44(%rbp),%eax
  jge    L431
  cmpl   $0x0,-0x20(%rbp)
  js     L176
  cmpl   $0x0,-0x24(%rbp)
  je     L84
  mov    -0x10(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  jl     L277
  mov    -0x10(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  jne    L151
  mov    -0x28(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jle    L151
L277:
  movl   $0xffffffff,-0x20(%rbp)
  mov    D51(%rip),%rax
  mov    (%rax),%rax
  mov    %rax,-0x10(%rbp)
  mov    D69(%rip),%rax
  mov    (%rax),%edx
  mov    D57(%rip),%rax
  mov    %edx,(%rax)
  jmp    L265
L151:
  movl   $0x1,-0x20(%rbp)
  mov    -0x44(%rbp),%eax
  cltq
  mov    -0x10(%rbp),%rdx
  imul   %rdx,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x28(%rbp),%eax
  cltq
  sub    %rax,-0x10(%rbp)
  jmp    L265
L84:
  mov    -0x10(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  jg     L158
  mov    -0x10(%rbp),%rax
  cmp    -0x8(%rbp),%rax
  jne    L361
  mov    -0x28(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jle    L361
L158:
  movl   $0xffffffff,-0x20(%rbp)
  mov    D68(%rip),%rax
  mov    (%rax),%rax
  mov    %rax,-0x10(%rbp)
  mov    D69(%rip),%rax
  mov    (%rax),%edx
  mov    D57(%rip),%rax
  mov    %edx,(%rax)
  jmp    L265
L361:
  movl   $0x1,-0x20(%rbp)
  mov    -0x44(%rbp),%eax
  cltq
  mov    -0x10(%rbp),%rdx
  imul   %rdx,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x28(%rbp),%eax
  cltq
  add    %rax,-0x10(%rbp)
  jmp    L265
L176:
  nop
L265:
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  movzbl (%rax),%eax
  movzbl %al,%eax
  mov    %eax,-0x28(%rbp)
  jmp    L357
L213:
  nop
  jmp    L219
L431:
  nop
L219:
  cmpq   $0x0,-0x40(%rbp)
  je     L146
  cmpl   $0x0,-0x20(%rbp)
  je     L38
  mov    -0x18(%rbp),%rax
  sub    $0x1,%rax
  jmp    L248
L38:
  mov    -0x38(%rbp),%rax
L248:
  mov    -0x40(%rbp),%rdx
  mov    %rax,(%rdx)
L146:
  mov    -0x10(%rbp),%rax
L6:
  leave
  ret
```

assistant: ```c
long long strtoll(const char *nptr, char **endptr, int base) {
  const char *s;
  long long acc, cutoff;
  int c;
  int neg, any, cutlim;
  if (base < 0 || base == 1 || base > 36) {
    if (endptr != 0)
      *endptr = (char *)nptr;
    errno = EINVAL;
    return 0;
  }
  s = nptr;
  do {
    c = (unsigned char)*s++;
  } while (isspace(c));
  if (c == '-') {
    neg = 1;
    c = *s++;
  } else {
    neg = 0;
    if (c == '+')
      c = *s++;
  }
  if ((base == 0 || base == 16) && c == '0' && (*s == 'x' || *s == 'X')) {
    c = s[1];
    s += 2;
    base = 16;
  }
  if (base == 0)
    base = c == '0' ? 8 : 10;
  cutoff = neg ? LLONG_MIN : LLONG_MAX;
  cutlim = cutoff % base;
  cutoff /= base;
  if (neg) {
    if (cutlim > 0) {
      cutlim -= base;
      cutoff += 1;
    }
    cutlim = -cutlim;
  }
  for (acc = 0, any = 0;; c = (unsigned char)*s++) {
    if (isdigit(c))
      c -= '0';
    else if (isalpha(c))
      c -= isupper(c) ? 'A' - 10 : 'a' - 10;
    else
      break;
    if (c >= base)
      break;
    if (any < 0)
      continue;
    if (neg) {
      if (acc < cutoff || (acc == cutoff && c > cutlim)) {
        any = -1;
        acc = LLONG_MIN;
        errno = ERANGE;
      } else {
        any = 1;
        acc *= base;
        acc -= c;
      }
    } else {
      if (acc > cutoff || (acc == cutoff && c > cutlim)) {
        any = -1;
        acc = LLONG_MAX;
        errno = ERANGE;
      } else {
        any = 1;
        acc *= base;
        acc += c;
      }
    }
  }
  if (endptr != 0)
    *endptr = (char *)(any ? s - 1 : nptr);
  return (acc);
}
```