this code what mean

if (LONG_MAX == LLONG_MAX)

if (string_size < 1ll<<32)
    return SDS_TYPE_32;
return SDS_TYPE_64;

In what scenario would LONG_MAX be equal to LLONG_MAX? Since they are equal, what is the significance of returning 64-bit?

Comment From: sundb

LONG_MAX == LLONG_MAX means we are using 64 bit system, at this time sds supports large string larger than 4GB.

Comment From: liqinliang

tks I misunderstood.

Redis what mean for SDS_TYPE_64;