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Difference between uint32_t and u_int32_t

W开发者_开发技巧hat is the difference between u_int32_t and uint32_t?


uint32_t is a standard C99 type u_int32_t is used internally in some POSIX implementations.


As others have mentioned, uint32_t is a standard C99 type.

Anyway, the takeaway is that if you're writing portable C code or C header files meant to be shared between different devices/architectures, you can use stdint.h.


uint32_t is standard C99, while u_int32_t is used on certain Unix platforms.


The variable type uint32_t is an unsigned 32-bit integer data type defined according to the so-called C99 standard. Not all compilers comply with the standard. And u_int32_t is used for some internally implementations.

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