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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2011 New Dream Network
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_COMMON_STRTOL_H
#define CEPH_COMMON_STRTOL_H
#include <string>
extern "C" {
#include <stdint.h>
}
long long strict_strtoll(const char *str, int base, std::string *err);
int strict_strtol(const char *str, int base, std::string *err);
double strict_strtod(const char *str, std::string *err);
float strict_strtof(const char *str, std::string *err);
uint64_t strict_iecstrtoll(const char *str, std::string *err);
template<typename T>
T strict_iec_cast(const char *str, std::string *err);
uint64_t strict_sistrtoll(const char *str, std::string *err);
template<typename T>
T strict_si_cast(const char *str, std::string *err);
/* On enter buf points to the end of the buffer, e.g. where the least
* significant digit of the input number will be printed. Returns pointer to
* where the most significant digit were printed, including zero padding.
* Does NOT add zero at the end of buffer, this is responsibility of the caller.
*/
template<typename T, const unsigned base = 10, const unsigned width = 1>
static inline
char* ritoa(T u, char *buf)
{
static_assert(std::is_unsigned<T>::value, "signed types are not supported");
static_assert(base <= 16, "extend character map below to support higher bases");
unsigned digits = 0;
while (u) {
*--buf = "0123456789abcdef"[u % base];
u /= base;
digits++;
}
while (digits++ < width)
*--buf = '0';
return buf;
}
#endif
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