#include <cmath>
+#include <boost/multiprecision/cpp_dec_float.hpp>
+
+#include <QMetaType>
#include <QString>
namespace pv {
namespace util {
-enum TimeUnit {
+enum class TimeUnit {
Time = 1,
Samples = 2
};
-extern const int FirstSIPrefixPower;
+enum class SIPrefix {
+ unspecified = -1,
+ yocto, zepto,
+ atto, femto, pico,
+ nano, micro, milli,
+ none,
+ kilo, mega, giga,
+ tera, peta, exa,
+ zetta, yotta
+};
+
+/// Returns the exponent that corresponds to a given prefix.
+int exponent(SIPrefix prefix);
+
+/// Timestamp type providing yoctosecond resolution.
+typedef boost::multiprecision::number<
+ boost::multiprecision::cpp_dec_float<24>,
+ boost::multiprecision::et_off> Timestamp;
/**
* Formats a given value with the specified SI prefix.
* @param v The value to format.
* @param unit The unit of quantity.
- * @param prefix The number of the prefix, from 0 for 'femto' up to
- * 8 for 'giga'. If prefix is set to -1, the prefix will be calculated.
+ * @param prefix The prefix to use.
* @param precision The number of digits after the decimal separator.
* @param sign Whether or not to add a sign also for positive numbers.
*
* @return The formated value.
*/
QString format_si_value(
- double v, QString unit, int prefix = -1,
+ const Timestamp& v, QString unit, SIPrefix prefix = SIPrefix::unspecified,
unsigned precision = 0, bool sign = true);
/**
* Formats a given time with the specified SI prefix.
* @param t The time value in seconds to format.
- * @param prefix The number of the prefix, from 0 for 'femto' up to
- * 8 for 'giga'. If prefix is set to -1, the prefix will be calculated.
+ * @param prefix The prefix to use.
* @param unit The unit of quantity.
* @param precision The number of digits after the decimal separator or period (.).
- * @param step_size The delta between two consecutive time markers (if applicable).
- * @param sign Whether or not to add a sign also for positive numbers.
*
* @return The formated value.
*/
QString format_time(
- double t, int prefix = -1, TimeUnit unit = Time, unsigned precision = 0,
- double step_size = 0, bool sign = true);
+ const Timestamp& t, SIPrefix prefix = SIPrefix::unspecified,
+ TimeUnit unit = TimeUnit::Time, unsigned precision = 0);
/**
* Formats a given time value with a SI prefix so that the
*
* @return The formated value.
*/
-QString format_second(double second);
+QString format_second(const Timestamp& second);
} // namespace util
} // namespace pv
+Q_DECLARE_METATYPE(pv::util::Timestamp)
+
#endif // PULSEVIEW_UTIL_HPP