Does gcc support 128-bit int on amd64?
How to define it?
How to use scanf/printf to read/write it?
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Does gcc support 128-bit int on amd64?
How to define it?
How to use scanf/printf to read/write it?
GCC supports built-in
__int128andunsigned __int128types (on 64-bit platforms only), but it looks like formatting support for 128-bit integers is less common in libc.Note:
<stdint.h>defines__int128_tand__uint128_ton versions before gcc4.6. See also Is there a 128 bit integer in gcc? for a table of gcc/clang/ICC versions.How to know if __uint128_t is defined for detecting
__int128