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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2011 New Dream Network | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #ifndef CEPH_COMMON_STRTOL_H | |
16 | #define CEPH_COMMON_STRTOL_H | |
17 | ||
18 | #include <string> | |
19 | extern "C" { | |
20 | #include <stdint.h> | |
21 | } | |
22 | ||
23 | long long strict_strtoll(const char *str, int base, std::string *err); | |
24 | ||
25 | int strict_strtol(const char *str, int base, std::string *err); | |
26 | ||
27 | double strict_strtod(const char *str, std::string *err); | |
28 | ||
29 | float strict_strtof(const char *str, std::string *err); | |
30 | ||
1adf2230 AA |
31 | uint64_t strict_iecstrtoll(const char *str, std::string *err); |
32 | ||
33 | template<typename T> | |
34 | T strict_iec_cast(const char *str, std::string *err); | |
35 | ||
7c673cae FG |
36 | uint64_t strict_sistrtoll(const char *str, std::string *err); |
37 | ||
38 | template<typename T> | |
39 | T strict_si_cast(const char *str, std::string *err); | |
40 | ||
41 | /* On enter buf points to the end of the buffer, e.g. where the least | |
42 | * significant digit of the input number will be printed. Returns pointer to | |
43 | * where the most significant digit were printed, including zero padding. | |
44 | * Does NOT add zero at the end of buffer, this is responsibility of the caller. | |
45 | */ | |
46 | template<typename T, const unsigned base = 10, const unsigned width = 1> | |
47 | static inline | |
48 | char* ritoa(T u, char *buf) | |
49 | { | |
50 | static_assert(std::is_unsigned<T>::value, "signed types are not supported"); | |
51 | static_assert(base <= 16, "extend character map below to support higher bases"); | |
52 | unsigned digits = 0; | |
53 | while (u) { | |
54 | *--buf = "0123456789abcdef"[u % base]; | |
55 | u /= base; | |
56 | digits++; | |
57 | } | |
58 | while (digits++ < width) | |
59 | *--buf = '0'; | |
60 | return buf; | |
61 | } | |
62 | ||
63 | #endif |