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MarcoCiaramella/swap_endianess.c

Created May 28, 2022 10:56
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swap endianess of unsigned int (32bit) and unsigned long long (64bit)
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swap_endianess.c
#define swap_endianess32(val) (((val>>24) & 0xffu) | ((val>>8) & 0xff00u) | ((val<<8) & 0xff0000u) | ((val<<24) & 0xff000000u))
#define swap_endianess64(val) (((val>>56) & 0xffull) | ((val>>40) & 0xff00ull) | ((val>>24) & 0xff0000ull) | ((val>>8) & 0xff000000ull) | ((val<<8) & 0xff00000000ull) | ((val<<24) & 0xff0000000000ull) | ((val<<40) & 0xff000000000000ull) | ((val<<56) & 0xff00000000000000ull))
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