128-bit Integers#
As an extension the integer scalar type __int128
is supported for
targets which have an integer mode wide enough to hold 128 bits.
Simply write __int128
for a signed 128-bit integer, or
unsigned __int128
for an unsigned 128-bit integer. There is no
support in GCC for expressing an integer constant of type __int128
for targets with long long
integer less than 128 bits wide.