protobuf/io/strtod.h

0001 // Protocol Buffers - Google's data interchange format
0002 // Copyright 2008 Google Inc.  All rights reserved.
0003 //
0004 // Use of this source code is governed by a BSD-style
0005 // license that can be found in the LICENSE file or at
0006 // https://developers.google.com/open-source/licenses/bsd
0007
0008 // A locale-independent version of strtod(), used to parse floating
0009 // point default values in .proto files, where the decimal separator
0010 // is always a dot.
0011
0012 #ifndef GOOGLE_PROTOBUF_IO_STRTOD_H__
0013 #define GOOGLE_PROTOBUF_IO_STRTOD_H__
0014
0015 #include <string>
0016
0017 // Must be included last.
0018 #include "google/protobuf/port_def.inc"
0019
0020 namespace google {
0021 namespace protobuf {
0022 namespace io {
0023
0024 // ----------------------------------------------------------------------
0025 // SimpleDtoa()
0026 // SimpleFtoa()
0027 //    Description: converts a double or float to a string which, if
0028 //    passed to NoLocaleStrtod(), will produce the exact same original double
0029 //    (except in case of NaN; all NaNs are considered the same value).
0030 //    We try to keep the string short but it's not guaranteed to be as
0031 //    short as possible.
0032 //
0033 //    Return value: string
0034 // ----------------------------------------------------------------------
0035 PROTOBUF_EXPORT std::string SimpleDtoa(double value);
0036 PROTOBUF_EXPORT std::string SimpleFtoa(float value);
0037
0038 // A locale-independent version of the standard strtod(), which always
0039 // uses a dot as the decimal separator.
0040 PROTOBUF_EXPORT double NoLocaleStrtod(const char* str, char** endptr);
0041
0042 // Casts a double value to a float value. If the value is outside of the
0043 // representable range of float, it will be converted to positive or negative
0044 // infinity.
0045 PROTOBUF_EXPORT float SafeDoubleToFloat(double value);
0046
0047 }  // namespace io
0048 }  // namespace protobuf
0049 }  // namespace google
0050
0051 #include "google/protobuf/port_undef.inc"
0052
0053 #endif  // GOOGLE_PROTOBUF_IO_STRTOD_H__