Endianness

Endianness  affects how you store a 32-bit(4-byte) value into memory.

For example, you have 0x90 AB 12 CD,

In big endian, you store the most significant byte in the smallest address.

90 AB 12 CD

low————————————– high

 

In little endian, you store the least significant byte in the smallest address.

CD 12 AB 90

low————————————–à high

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