tsub              921 src/dps8/dps8_math128.c     tsub   (0,      0,      0,      0,          0,       0);
tsub              922 src/dps8/dps8_math128.c     tsub   (0,      1,      0,      1,          0,       0);
tsub              923 src/dps8/dps8_math128.c     tsub   (MASK64, MASK64, MASK64, MASK64,     0,       0);
tsub              924 src/dps8/dps8_math128.c     tsub   (MASK64, MASK64, 0,      0,          MASK64,  MASK64);
tsub              925 src/dps8/dps8_math128.c     tsub   (0,      0,      0,      1,          MASK64,  MASK64);