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I know the following C code is endian-dependent:
short s_endian = 0x4142;
char c_endian = *(char *)&s_endian;
On a big-endian machine, c_endian will be ‘A'(0x41); while on a little-endian machine, it will be ‘B'(0x42).
But this code seems kind of ugly. So is there endian dependent code in real applications? Or have you came across any application that needs a lot of changes when porting to a different target with a different endian?
Thanks.
Pretty much any code that deals with saving integers with more than 8 bits in binary format, or sends such integers over the network. For one extremely common example, many of the fields in the TCP header fall into this category.