shevek::relative_time(3) Library Functions Manual shevek::relative_time(3)NAME
shevek::relative_time -
Time interval.
SYNOPSIS
#include <time.hh>
Public Member Functions
relative_time ()
The default constructor creates an interval of 0.
relative_time (timetype days, int hours, int minutes, int seconds, int nanoseconds=0)
Construct an interval of a given size.
relative_time (timetype seconds, unsigned nanoseconds)
Fast constructor.
relative_time operator+ (relative_time that) const
Add two intervals.
absolute_time operator+ (absolute_time that) const
Add an interval to a moment.
relative_time operator- (relative_time that) const
Subtract two intervals.
relative_time operator- () const
Negate an interval.
relative_time operator* (float c) const
Scale an interval.
relative_time operator/ (float c) const
Scale an interval.
relative_time operator% (relative_time that) const
Modulo operator for two intervals.
double operator/ (relative_time that) const
Division of two intervals.
relative_time & operator+= (relative_time that)
Add an interval.
relative_time & operator-= (relative_time that)
Subtract an interval.
relative_time & operator*= (float c)
Scale the interval.
relative_time & operator/= (float c)
Scale the interval.
relative_time & operator%= (relative_time that)
Modulo.
bool operator< (relative_time that) const
Compare with another interval.
bool operator> (relative_time that) const
Compare with another interval.
bool operator<= (relative_time that) const
Compare with another interval.
bool operator>= (relative_time that) const
Compare with another interval.
bool operator== (relative_time that) const
bool operator!= (relative_time that) const
unsigned nanoseconds () const
Number of nanoseconds.
unsigned seconds () const
Number of seconds.
unsigned minutes () const
Number of minutes.
unsigned hours () const
Number of hours.
unsigned days () const
Number of days.
bool isnegative () const
Is this a negative interval?
timetype total () const
Total number of seconds, as encoded.
Static Public Member Functions
static void set_digits (unsigned num)
Set number of digits to use when printing (for fractions of seconds).
static unsigned get_digits ()
Get the number of digits that is used when printing.
Friends
std::ostream & operator<< (std::ostream &s, relative_time t)
Write the interval to a std::ostream.
Detailed Description
Time interval.
Constructor &; Destructor Documentation
shevek::relative_time::relative_time (timetypeseconds, unsignednanoseconds)
Fast constructor. This directly fills the members and is therefore slightly faster than the other constructors. However, the others aren't
really slow either.
Member Function Documentation
bool shevek::relative_time::operator!= (relative_timethat) const Compare two intervals. Note that this is rarely a useful operation, because
minor errors may be introduced by computations.
bool shevek::relative_time::operator== (relative_timethat) const Compare two intervals. Note that this is rarely a useful operation, because
minor errors may be introduced by computations.
Author
Generated automatically by Doxygen for libshevek from the source code.
libshevek Fri May 11 2012 shevek::relative_time(3)
Check Out this Related Man Page
QwtDoubleInterval(3) Qwt User's Guide QwtDoubleInterval(3)NAME
QwtDoubleInterval -
A class representing an interval.
SYNOPSIS
#include <qwt_double_interval.h>
Public Types
enum BorderMode { IncludeBorders = 0, ExcludeMinimum = 1, ExcludeMaximum = 2, ExcludeBorders = ExcludeMinimum | ExcludeMaximum }
Public Member Functions
int borderFlags () const
bool contains (double value) const
QwtDoubleInterval extend (double value) const
QwtDoubleInterval intersect (const QwtDoubleInterval &) const
bool intersects (const QwtDoubleInterval &) const
void invalidate ()
QwtDoubleInterval inverted () const
bool isNull () const
bool isValid () const
QwtDoubleInterval limited (double minValue, double maxValue) const
double maxValue () const
double minValue () const
QwtDoubleInterval normalized () const
int operator!= (const QwtDoubleInterval &) const
QwtDoubleInterval operator& (const QwtDoubleInterval &) const
QwtDoubleInterval & operator&= (const QwtDoubleInterval &)
int operator== (const QwtDoubleInterval &) const
QwtDoubleInterval operator| (double) const
QwtDoubleInterval operator| (const QwtDoubleInterval &) const
QwtDoubleInterval & operator|= (double)
QwtDoubleInterval & operator|= (const QwtDoubleInterval &)
QwtDoubleInterval (double minValue, double maxValue, int borderFlags=IncludeBorders)
QwtDoubleInterval ()
void setBorderFlags (int)
void setInterval (double minValue, double maxValue, int borderFlags=IncludeBorders)
void setMaxValue (double)
void setMinValue (double)
QwtDoubleInterval symmetrize (double value) const
QwtDoubleInterval unite (const QwtDoubleInterval &) const
double width () const
Detailed Description
A class representing an interval.
The interval is represented by 2 doubles, the lower and the upper limit.
Member Enumeration Documentation
enum QwtDoubleInterval::BorderMode Flag indicating if a border is included/excluded from an interval
o IncludeBorders
min/max values are inside the interval
o ExcludeMinimum
min value is not included in the interval
o ExcludeMaximum
max value is not included in the interval
o ExcludeBorders
min/max values are not included in the interval
See also:
setBorderMode(), testBorderMode()
Constructor &; Destructor Documentation
QwtDoubleInterval::QwtDoubleInterval () [inline]
Default Constructor. Creates an invalid interval [0.0, -1.0]
See also:
setInterval(), isValid()
QwtDoubleInterval::QwtDoubleInterval (doubleminValue, doublemaxValue, intborderFlags = IncludeBorders) [inline] Constructor
Build an interval with from min/max values
Parameters:
minValue Minimum value
maxValue Maximum value
borderFlags Include/Exclude borders
Member Function Documentation
int QwtDoubleInterval::borderFlags () const [inline] Returns:
Border flags
See also:
setBorderFlags()
bool QwtDoubleInterval::contains (doublevalue) const Test if a value is inside an interval
Parameters:
value Value
Returns:
true, if value >= minValue() && value <= maxValue()
QwtDoubleInterval QwtDoubleInterval::extend (doublevalue) const Extend the interval
If value is below minValue, value becomes the lower limit. If value is above maxValue, value becomes the upper limit.
extend has no effect for invalid intervals
Parameters:
value Value
See also:
isValid()
QwtDoubleInterval QwtDoubleInterval::intersect (const QwtDoubleInterval &other) const
Intersect 2 intervals.
bool QwtDoubleInterval::intersects (const QwtDoubleInterval &other) const Test if two intervals overlap
void QwtDoubleInterval::invalidate () [inline] Invalidate the interval
The limits are set to interval [0.0, -1.0]
See also:
isValid()
QwtDoubleInterval QwtDoubleInterval::inverted () const Invert the limits of the interval
Returns:
Inverted interval
See also:
normalized()
bool QwtDoubleInterval::isNull () const [inline] Returns:
true, if isValid() && (minValue() >= maxValue())
bool QwtDoubleInterval::isValid () const [inline] A interval is valid when minValue() <= maxValue(). In case of
QwtDoubleInterval::ExcludeBorders it is true when minValue() < maxValue()
QwtDoubleInterval QwtDoubleInterval::limited (doublelowerBound, doubleupperBound) const Limit the interval, keeping the border modes
Parameters:
lowerBound Lower limit
upperBound Upper limit
Returns:
Limited interval
double QwtDoubleInterval::maxValue () const [inline] Returns:
Upper limit of the interval
double QwtDoubleInterval::minValue () const [inline] Returns:
Lower limit of the interval
QwtDoubleInterval QwtDoubleInterval::normalized () const
Normalize the limits of the interval. If maxValue() < minValue() the limits will be inverted.
Returns:
Normalized interval
See also:
isValid(), inverted()
int QwtDoubleInterval::operator!= (const QwtDoubleInterval &other) const [inline]
Compare two intervals.
QwtDoubleInterval QwtDoubleInterval::operator& (const QwtDoubleInterval &interval) const [inline] Intersection of two intervals
See also:
intersect()
QwtDoubleInterval & QwtDoubleInterval::operator&= (const QwtDoubleInterval &interval)
Intersects this interval with the given interval.
int QwtDoubleInterval::operator== (const QwtDoubleInterval &other) const [inline]
Compare two intervals.
QwtDoubleInterval QwtDoubleInterval::operator| (const QwtDoubleInterval &interval) const [inline] Union of two intervals
See also:
unite()
QwtDoubleInterval QwtDoubleInterval::operator| (doublevalue) const [inline] Extend an interval
See also:
extend()
QwtDoubleInterval & QwtDoubleInterval::operator|= (const QwtDoubleInterval &interval)
Unites this interval with the given interval.
void QwtDoubleInterval::setBorderFlags (intborderFlags) [inline] Change the border flags
Parameters:
borderFlags Or'd BorderMode flags
See also:
borderFlags()
void QwtDoubleInterval::setInterval (doubleminValue, doublemaxValue, intborderFlags = IncludeBorders) [inline] Assign the limits of the
interval
Parameters:
minValue Minimum value
maxValue Maximum value
borderFlags Include/Exclude borders
void QwtDoubleInterval::setMaxValue (doublemaxValue) [inline] Assign the upper limit of the interval
Parameters:
maxValue Maximum value
void QwtDoubleInterval::setMinValue (doubleminValue) [inline] Assign the lower limit of the interval
Parameters:
minValue Minimum value
QwtDoubleInterval QwtDoubleInterval::symmetrize (doublevalue) const Adjust the limit that is closer to value, so that value becomes the center
of the interval.
Parameters:
value Center
Returns:
Interval with value as center
QwtDoubleInterval QwtDoubleInterval::unite (const QwtDoubleInterval &other) const
Unite 2 intervals.
double QwtDoubleInterval::width () const [inline] Return the width of an interval The width of invalid intervals is 0.0, otherwise the result
is maxValue() - minValue().
See also:
isValid()
Author
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Version 5.2.2 Mon Aug 1 2011 QwtDoubleInterval(3)