ah_value Documentation¶

template <class T>

class value¶

#include <ah_value.h>

a stateful variable class - simplistically

Inherits from sigslot::has_slots<>

Public Functions

void set(T x)¶

sets the variable to a certain value

Parameters

• x

void silentset(T x)¶

sets the variable to a value and silences all signals (for this operation)

Parameters

• x

T get(void)¶

returns the value of the variable

Return

the value of the variable

void setlevel(T x)¶

sets the trigger threshold

Parameters

• x

T getlevel(void)¶

returns the value of the trigger threshold

Return

the value of the trigger threshold

void resetmaxmin(void)¶

resets the states of maximum and minimum during the data-logging time

T getmax(void)¶

returns the maximum value encountered since the start of the program or since the last call to resetmaxmin

Return

maximum value during data-logging time

T getmin(void)¶

returns the minimum value encountered since the start of the program or since the last call to resetmaxmin

Return

minimum value during data-logging time

T getold(void)¶

returns the last value before the last call to set

Return

value of variable before last call to set

Public Members

sigslot::signal0 changed¶

a signal that is triggered when the value changes

sigslot::signal0 levelchanged¶

a signal that is triggered when someone changes the trigger level

sigslot::signal0 abovelevel¶

a signal triggered when the value goes from below to above the trigger level

sigslot::signal0 belowlevel¶

a signal triggered when the value goes from above to below the trigger level

sigslot::signal0 atlevel¶

a signal triggered when the value goes from not equal to equal the trigger level

Private Members

T val¶

the value of the variable

T level¶

the trigger level

T max¶

the current maximum

T min¶

the current minimum

T old¶

the last value