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