// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <ctype.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>

#define ATOx(T, fn)                   \
  T fn(const char* nptr) {            \
    while (nptr && isspace(*nptr)) {  \
      nptr++;                         \
    }                                 \
                                      \
    bool neg = false;                 \
    if (*nptr == '-') {               \
      neg = true;                     \
      nptr++;                         \
    }                                 \
                                      \
    T ret = 0;                        \
    for (; nptr; nptr++) {            \
      if (!isdigit(*nptr))            \
        break;                        \
      ret = 10 * ret + (*nptr - '0'); \
    }                                 \
                                      \
    if (neg)                          \
      ret = -ret;                     \
    return ret;                       \
  }

ATOx(int, atoi) ATOx(long, atol) ATOx(long long, atoll)