39 lines
1.6 KiB
C
39 lines
1.6 KiB
C
|
#pragma once
|
||
|
|
|
||
|
|
/** Assign value to variable with const modifier
|
||
|
|
*
|
||
|
|
* This macros is equivalent to `const_cast` from C++
|
||
|
|
* Literally x = y, but with some magic.
|
||
|
|
* It's as dangerous as only can be.
|
||
|
|
* We don't advice you to use it unless you REALLY MUST.
|
||
|
|
* Like REALLY REALLY.
|
||
|
|
*
|
||
|
|
* @param x - const variable
|
||
|
|
* @param y - variable
|
||
|
|
*
|
||
|
|
* @return assigned variable value
|
||
|
|
*/
|
||
|
|
#ifndef FURI_CONST_ASSIGN
|
||
|
|
#define FURI_CONST_ASSIGN_(T, x, y) \
|
||
|
|
({ \
|
||
|
|
T* tmp_x = (T*)&x; \
|
||
|
|
*tmp_x = y; \
|
||
|
|
*tmp_x; \
|
||
|
|
})
|
||
|
|
#define FURI_CONST_ASSIGN(x, y) \
|
||
|
|
_Generic((x), signed char \
|
||
|
|
: FURI_CONST_ASSIGN_(signed char, x, y), unsigned char \
|
||
|
|
: FURI_CONST_ASSIGN_(unsigned char, x, y), short \
|
||
|
|
: FURI_CONST_ASSIGN_(short, x, y), unsigned short \
|
||
|
|
: FURI_CONST_ASSIGN_(unsigned short, x, y), int \
|
||
|
|
: FURI_CONST_ASSIGN_(int, x, y), unsigned \
|
||
|
|
: FURI_CONST_ASSIGN_(unsigned, x, y), long \
|
||
|
|
: FURI_CONST_ASSIGN_(long, x, y), unsigned long \
|
||
|
|
: FURI_CONST_ASSIGN_(unsigned long, x, y), long long \
|
||
|
|
: FURI_CONST_ASSIGN_(long long, x, y), unsigned long long \
|
||
|
|
: FURI_CONST_ASSIGN_(unsigned long long, x, y), float \
|
||
|
|
: FURI_CONST_ASSIGN_(float, x, y), double \
|
||
|
|
: FURI_CONST_ASSIGN_(double, x, y), long double \
|
||
|
|
: FURI_CONST_ASSIGN_(long double, x, y))
|
||
|
|
#endif
|