test_permute.c running 
Permute 3 integers 
 1 2 3   fyi permuters 0 1 2 
 2 1 3   fyi permuters 0 0 2 
 1 3 2   fyi permuters 0 1 1 
 3 1 2   fyi permuters 0 0 1 
 2 3 1   fyi permuters 0 1 0 
 3 2 1   fyi permuters 0 0 0 

Permute 4 integers, starting with previous 3 
 3 2 1 4 
 2 3 1 4 
 3 1 2 4 
 1 3 2 4 
 2 1 3 4 
 1 2 3 4 
 3 2 4 1 
 2 3 4 1 
 3 4 2 1 
 4 3 2 1 
 2 4 3 1 
 4 2 3 1 
 3 1 4 2 
 1 3 4 2 
 3 4 1 2 
 4 3 1 2 
 1 4 3 2 
 4 1 3 2 
 2 1 4 3 
 1 2 4 3 
 2 4 1 3 
 4 2 1 3 
 1 4 2 3 
 4 1 2 3 

Permute 3 doubles 
 1.000000 2.000000 3.000000 
 2.000000 1.000000 3.000000 
 1.000000 3.000000 2.000000 
 3.000000 1.000000 2.000000 
 2.000000 3.000000 1.000000 
 3.000000 2.000000 1.000000 

Permute 4 characters 
 abcd 
 bacd 
 acbd 
 cabd 
 bcad 
 cbad 
 abdc 
 badc 
 adbc 
 dabc 
 bdac 
 dbac 
 acdb 
 cadb 
 adcb 
 dacb 
 cdab 
 dcab 
 bcda 
 cbda 
 bdca 
 dbca 
 cdba 
 dcba 

Permute 5 characters 
 abcde 
 bacde 
 acbde 
 cabde 
 bcade 
 cbade 
 abdce 
 badce 
 adbce 
 dabce 
 bdace 
 dbace 
 acdbe 
 cadbe 
 adcbe 
 dacbe 
 cdabe 
 dcabe 
 bcdae 
 cbdae 
 bdcae 
 dbcae 
 cdbae 
 dcbae 
 abced 
 baced 
 acbed 
 cabed 
 bcaed 
 cbaed 
 abecd 
 baecd 
 aebcd 
 eabcd 
 beacd 
 ebacd 
 acebd 
 caebd 
 aecbd 
 eacbd 
 ceabd 
 ecabd 
 bcead 
 cbead 
 becad 
 ebcad 
 cebad 
 ecbad 
 abdec 
 badec 
 adbec 
 dabec 
 bdaec 
 dbaec 
 abedc 
 baedc 
 aebdc 
 eabdc 
 beadc 
 ebadc 
 adebc 
 daebc 
 aedbc 
 eadbc 
 deabc 
 edabc 
 bdeac 
 dbeac 
 bedac 
 ebdac 
 debac 
 edbac 
 acdeb 
 cadeb 
 adceb 
 daceb 
 cdaeb 
 dcaeb 
 acedb 
 caedb 
 aecdb 
 eacdb 
 ceadb 
 ecadb 
 adecb 
 daecb 
 aedcb 
 eadcb 
 deacb 
 edacb 
 cdeab 
 dceab 
 cedab 
 ecdab 
 decab 
 edcab 
 bcdea 
 cbdea 
 bdcea 
 dbcea 
 cdbea 
 dcbea 
 bceda 
 cbeda 
 becda 
 ebcda 
 cebda 
 ecbda 
 bdeca 
 dbeca 
 bedca 
 ebdca 
 debca 
 edbca 
 cdeba 
 dceba 
 cedba 
 ecdba 
 decba 
 edcba 
test_permute.c finished