uint64_t please help

[lovesunset21]

Hi everyone,

I try to work with an uint64_t as followed:

uint64_t a;

a=a| 1 <<63;

And it displays: "gf2m.c:71: warning: left shift count >= width of type". I don't know why. Please help me. Thanks a lot.

[cas]

Because 1 is an int, not a uint64_t. Use 1ULL, which is an unsigned long long, guaranteed to be at least 64 bits.

[lovesunset21]

Thanks so much cas