source/Symbol/CompactUnwindInfo.cpp

805     uint32_t permutation = EXTRACT_BITS(
857       // This is done with Lehmer code permutation, e.g. see
858       // http://stackoverflow.com/questions/1506078/fast-permutation-number-
859       // permutation-mapping-algorithms
867         permunreg[0] = permutation / 120; // 120 == 5!
868         permutation -= (permunreg[0] * 120);
869         permunreg[1] = permutation / 24; // 24 == 4!
870         permutation -= (permunreg[1] * 24);
871         permunreg[2] = permutation / 6; // 6 == 3!
872         permutation -= (permunreg[2] * 6);
873         permunreg[3] = permutation / 2; // 2 == 2!
874         permutation -= (permunreg[3] * 2);
875         permunreg[4] = permutation; // 1 == 1!
879         permunreg[0] = permutation / 120;
880         permutation -= (permunreg[0] * 120);
881         permunreg[1] = permutation / 24;
882         permutation -= (permunreg[1] * 24);
883         permunreg[2] = permutation / 6;
884         permutation -= (permunreg[2] * 6);
885         permunreg[3] = permutation / 2;
886         permutation -= (permunreg[3] * 2);
887         permunreg[4] = permutation;
890         permunreg[0] = permutation / 60;
891         permutation -= (permunreg[0] * 60);
892         permunreg[1] = permutation / 12;
893         permutation -= (permunreg[1] * 12);
894         permunreg[2] = permutation / 3;
895         permutation -= (permunreg[2] * 3);
896         permunreg[3] = permutation;
899         permunreg[0] = permutation / 20;
900         permutation -= (permunreg[0] * 20);
901         permunreg[1] = permutation / 4;
902         permutation -= (permunreg[1] * 4);
903         permunreg[2] = permutation;
906         permunreg[0] = permutation / 5;
907         permutation -= (permunreg[0] * 5);
908         permunreg[1] = permutation;
911         permunreg[0] = permutation;
915       // Decode the Lehmer code for this permutation of the registers v.
1070     uint32_t permutation = EXTRACT_BITS(
1120       // This is done with Lehmer code permutation, e.g. see
1121       // http://stackoverflow.com/questions/1506078/fast-permutation-number-
1122       // permutation-mapping-algorithms
1130         permunreg[0] = permutation / 120; // 120 == 5!
1131         permutation -= (permunreg[0] * 120);
1132         permunreg[1] = permutation / 24; // 24 == 4!
1133         permutation -= (permunreg[1] * 24);
1134         permunreg[2] = permutation / 6; // 6 == 3!
1135         permutation -= (permunreg[2] * 6);
1136         permunreg[3] = permutation / 2; // 2 == 2!
1137         permutation -= (permunreg[3] * 2);
1138         permunreg[4] = permutation; // 1 == 1!
1142         permunreg[0] = permutation / 120;
1143         permutation -= (permunreg[0] * 120);
1144         permunreg[1] = permutation / 24;
1145         permutation -= (permunreg[1] * 24);
1146         permunreg[2] = permutation / 6;
1147         permutation -= (permunreg[2] * 6);
1148         permunreg[3] = permutation / 2;
1149         permutation -= (permunreg[3] * 2);
1150         permunreg[4] = permutation;
1153         permunreg[0] = permutation / 60;
1154         permutation -= (permunreg[0] * 60);
1155         permunreg[1] = permutation / 12;
1156         permutation -= (permunreg[1] * 12);
1157         permunreg[2] = permutation / 3;
1158         permutation -= (permunreg[2] * 3);
1159         permunreg[3] = permutation;
1162         permunreg[0] = permutation / 20;
1163         permutation -= (permunreg[0] * 20);
1164         permunreg[1] = permutation / 4;
1165         permutation -= (permunreg[1] * 4);
1166         permunreg[2] = permutation;
1169         permunreg[0] = permutation / 5;
1170         permutation -= (permunreg[0] * 5);
1171         permunreg[1] = permutation;
1174         permunreg[0] = permutation;
1178       // Decode the Lehmer code for this permutation of the registers v.