class Quartz::TimePoint

Overview

The TimePoint data type represents points in simulated time, and is intended to be used internally.

Its main purpose is to describe event times as offsets from a common reference point. It may be perturbed by a Duration value.

It is implemented as an arbitrary-precision integer, and provides only relevant methods.

The modeller should only manipulate Duration values.

TODO:

Included Modules

Defined in:

quartz/time_point.cr

Constructors

Instance Method Summary

Instance methods inherited from class Reference

==(other : Quartz::Any) ==

Instance methods inherited from class Object

===(other : Quartz::Any) ===

Constructor Detail

def self.new(n : Int = 0, precision : Scale = Scale::BASE) #

Creates a new TimePoint value, initialized at the given precision from the given integer n, which may or not be zero.


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def self.new(magnitude : Array(Int16), precision : Scale) #

Creates a new TimePoint, whose value depends on the given *magnitude, initialized at the given precision.

The magnitude must be ordered and organized from the least-significant number to the least-signifiant number.


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def self.new(*numbers : Int, precision : Scale = Scale::BASE) #

Creates a new TimePoint, whose value is given by numbers, initialized at the given precision.

The numbers must be ordered and organized from the most-significant number to the least-significant number.


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Instance Method Detail

def +(duration : Duration) : TimePoint #

Returns a new TimePoint to which the given Duration is added.

Doesn't truncate result to the duration precision.


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def -(duration : Duration) : TimePoint #

Returns a new TimePoint to which the given Duration is subtracted.

Doesn't truncate result to the duration precision.


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def -(other : TimePoint) : Duration #

Measure the difference between self and another instance of self. The difference is expressed by a Duration value.

If the exact difference between the time points cannot be represented, an infinite Duration is returned.

See also #gap.


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def <=>(other : TimePoint) #

Comparison operator


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def [](scale : Scale) : Int16 #

Returns the integer corresponding to the indicated precision, or zero if not in bounds.


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def [](i : Int) : Int16 #

Returns the integer at the corresponding index following the little-endian representation (0 is the least significant).

Raises if the given index is not in bounds.


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def []?(scale : Scale) : Int16 | Nil #

Returns the integer corresponding to the indicated precision, or nil.


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def []?(i : Int) : Int16 | Nil #

Returns the integer at the corresponding index following the little-endian representation (0 is the least significant).

Returns nil if given index is not in bounds.


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def advance(by duration : Duration, truncate : Bool = true) : TimePoint #

Multiscale advancement - Adds the given Duration to self.

If the advancement duration is zero, returns self. Advances according to the duration value otherwise.

If the truncate parameter is set to true, the time point is truncated at the precision level of the duration (e.g. all digits less significant are discarded). Otherwise, yields exact results.

See also #+, #-.


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def at(scale : Scale, &) #

Returns the element at the given precision, if in bounds, otherwise executes the given block and returns its value.


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def at(index : Int, &block : -> Int16) #

Returns the element at the given index, if in bounds, otherwise executes the given block and returns its value.


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def clone #

Returns a copy of self with all instance variables cloned.


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def coarse_to!(precision : Scale) #

Discards all digits less significant than given precision.


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def dup #

Returns a shallow copy of self.


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def duration_from_phase(phase : Duration) : Duration #

Converts a planned phase (offset from the current epoch) to a planned duration relative to self.


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def epoch_phase(precision : Scale) : Int64 #

Returns the epoch phase, which represents the number of time quanta which separates self from the beginning of the current epoch.


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def gap(other : TimePoint) : Duration #

Measure the difference between self and another instance of self. The difference is expressed by a Duration value.

If the exact difference between the time points cannot be represented, an approximation is returned.

See also #-.


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def phase_from_duration(duration : Duration) : Duration #

Converts a planned duration to a planned phase.

The planned phase represents an offset from the current epoch relative to self.


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def precision : Scale #

Returns the precision associated with the least significant number.


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def refined_duration(duration : Duration, refined : Scale) : Duration #

Refines a planned Duration to match another planned duration precision, relative to self.

Note: The implementation diverge from the paper algoithm.


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def size #

Returns the order of magnitude of self, based on its #precision and the number of stored integers on a base-1000 scale.


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def to_big_i #

Convert this TimePoint to a BigInt.


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def to_f #

Convert self to a Float64. Express values in a base precision, e.g. Scale::BASE.

Note: this conversion can lose information about the overall magnitude of self.


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def to_i #

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def to_i32 #

Convert this TimePoint to an Int32.

Note: this conversion can lose information about the overall magnitude of self as well as return a result with the opposite sign.


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def to_i64 #

Convert this TimePoint to an Int64. Express values relative to its #precision.

Note: this conversion can lose information about the overall magnitude of self as well as return a result with the opposite sign.


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def to_s(io) #

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def zero? #

Whether self is a zero time point value.


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