Ben Pfaff wrote: > > There was a suggestion to support 64-bit rotates as well. That would > > use uint64_t. Does stdint.m4 define some symbol that may be useful > > here? > > I believe that UINT64_C (for writing an unsigned 64-bit integer > literal) is defined if and only if uint64_t is available.
Let's compare UINT64_C and UINT64_MAX: Both are indicators of uint64_t. But UINT64_C is not defined if defined __cplusplus && ! defined __STDC_CONSTANT_MACROS therefore I would use UINT64_MAX as a witness of uint64_t's presence. Bruno
