t4_               190 src/gauche/arith.h         u_long t1_, t2_, t3_, t4_;                                      \
t4_               198 src/gauche/arith.h         t4_ = LO(t3_) << HALF_BITS;                                     \
t4_               199 src/gauche/arith.h         lo += t4_;                                                      \
t4_               200 src/gauche/arith.h         if (lo < t4_) hi++;                                             \