S1 322 maint/gnulib/lib/sha256.c #define S1(x) (rol(x,15)^rol(x,13)^(x>>10)) S1 347 maint/gnulib/lib/sha512.c #define S1(x) u64xor (u64rol (x, 45), u64xor (u64rol (x, 3), u64shr (x, 6)))