High Performance OPC UA Server SDK
1.1.1.177
|
Defines the Range for a value. More...
#include <range.h>
Data Fields | |
double | low |
Lowest value in the range. | |
double | high |
Highest value in the range. | |
Related Functions | |
void | ua_range_init (struct ua_range *t) |
Initialize an ua_range struct with a valid value. More... | |
void | ua_range_clear (struct ua_range *t) |
Clear all resources alloctated in an ua_range struct. More... | |
int | ua_range_compare (const struct ua_range *a, const struct ua_range *b) |
Compare two ua_range structs. More... | |
int | ua_range_copy (struct ua_range *dst, const struct ua_range *src) |
Create a copy of a ua_range struct. More... | |
Defines the Range for a value.
|
related |
Clear all resources alloctated in an ua_range struct.
Frees allocated memory like arrays and resets numeric values. The ua_range struct itself is not freed and must be freed by the caller if required. This function always succeeds for a valid ua_range struct, that was validly decoded, initilized by ua_range_init or created with ua_range_copy.
Compare two ua_range structs.
Compares the content of the ua_range struct a
to the content of the ua_range struct b
. If a
is smaller than b
, an integer less than zero is returned, if a
is bigger than b
, an integer greater than zero is returned. If both structs are equal zero is returned.
This function creates a total order on ua_range structs, so it is well suited to not only determine equality, but also sort multiple instances of this struct.
Create a copy of a ua_range struct.
Copy all fields from struct ua_range src
to dst
. Creates a deep copy so all content is recusively copied and both src
and dst
can be used and must be freed separately.
dst
is not cleared before the copy operation, so it must not have any allocated data. It may or may not be initilized by the caller before copy.
|
related |
Initialize an ua_range struct with a valid value.
After initialization the fields of the struct are set to valid and consistent values and can safley be accessed. An initialized ua_range struct can also be passed to ua_range_compare, ua_range_copy and ua_range_clear. This function will always succeed as long as an ua_range struct is passed to it.