2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #ifndef PULSEVIEW_PV_UTIL_HPP
21 #define PULSEVIEW_PV_UTIL_HPP
28 #include <boost/multiprecision/cpp_dec_float.hpp>
57 /// Returns the exponent that corresponds to a given prefix.
58 int exponent(SIPrefix prefix);
60 /// Timestamp type providing yoctosecond resolution.
61 typedef boost::multiprecision::number<
62 boost::multiprecision::cpp_dec_float<24>,
63 boost::multiprecision::et_off> Timestamp;
66 * Chooses a prefix so that the value in front of the decimal point is between 1 and 999.
68 SIPrefix determine_value_prefix(double v);
71 * Formats a given timestamp with the specified SI prefix.
73 * If 'prefix' is left 'unspecified', the function chooses a prefix so that
74 * the value in front of the decimal point is between 1 and 999.
76 * The default value "s" for the unit argument makes the most sense when
77 * formatting time values, but a different value can be given if the function
78 * is reused to format a value of another quantity.
80 * @param t The value to format.
81 * @param prefix The SI prefix to use.
82 * @param precision The number of digits after the decimal separator.
83 * @param unit The unit of quantity.
84 * @param sign Whether or not to add a sign also for positive numbers.
86 * @return The formatted value.
88 QString format_time_si(const Timestamp& v,
89 SIPrefix prefix = SIPrefix::unspecified, unsigned precision = 0,
90 QString unit = "s", bool sign = true);
93 * Formats a given value into a representation using SI units.
95 * If 'prefix' is left 'unspecified', the function chooses a prefix so that
96 * the value in front of the decimal point is between 1 and 999.
98 * @param value The value to format.
99 * @param prefix The SI prefix to use.
100 * @param precision The number of digits after the decimal separator.
101 * @param unit The unit of quantity.
102 * @param sign Whether or not to add a sign also for positive numbers.
104 * @return The formatted value.
106 QString format_value_si(double v,
107 SIPrefix prefix = SIPrefix::unspecified, unsigned precision = 0,
108 QString unit = "", bool sign = true);
111 * Wrapper around 'format_time_si()' that interprets the given 'precision'
112 * value as the number of decimal places if the timestamp would be formatted
113 * without a SI prefix (using 'SIPrefix::none') and adjusts the precision to
114 * match the given 'prefix'
116 * @param t The value to format.
117 * @param prefix The SI prefix to use.
118 * @param precision The number of digits after the decimal separator if the
119 * 'prefix' would be 'SIPrefix::none', see above for more information.
120 * @param unit The unit of quantity.
121 * @param sign Whether or not to add a sign also for positive numbers.
123 * @return The formatted value.
125 QString format_time_si_adjusted(const Timestamp& t, SIPrefix prefix,
126 unsigned precision = 0, QString unit = "s", bool sign = true);
129 * Formats the given timestamp using "[+-]DD:HH:MM:SS.mmm uuu nnn ppp..." format.
131 * "DD" and "HH" are left out if they would be "00" (but if "DD" is generated,
132 * "HH" is also always generated. The "MM:SS" part is always produced, the
133 * number of subsecond digits can be influenced using the 'precision' parameter.
135 * @param t The value to format.
136 * @param precision The number of digits after the decimal separator.
137 * @param sign Whether or not to add a sign also for positive numbers.
139 * @return The formatted value.
141 QString format_time_minutes(const Timestamp& t, signed precision = 0,
144 vector<string> split_string(string text, string separator);
149 Q_DECLARE_METATYPE(pv::util::Timestamp)
151 #endif // PULSEVIEW_PV_UTIL_HPP