This information is from defind.c, version 3, of 3 June 1991.

The following tokens are predefined by the preprocessor/compiler for
Cray Y-MP, Unicos 6.0.11, scc 2.0.0:
                 _ADDR32 (1)
                    CRAY (1)
                    cray (1)
                   CRAY1 (1)
                 _FASTMD (1)
                __STDC__ (2)
                 _UNICOS (6)
                    unix (1)

The following tokens are defined when <sys/param.h> is included:
                 _ADDR32 (1)
                    CRAY (1)
                    cray (1)
                   CRAY1 (1)
                 _FASTMD (1)
                __STDC__ (2)
                 _UNICOS (6)
                    unix (1)

Additionally, the following standard tokens are defined:
                __FILE__ (defind.c)
                __LINE__ (5526)
                __DATE__ (Jun  3 1991)
                __TIME__ (23:24:11)
