All tests were done with the 64 bits
icas
executable available
here
.
GCD
Timings
for Fermat GCD test 1 to 4 vars. See also
Sage wiki
. Source files for giac (see also the archive above):
Integers
1 var
,
2 var
,
3 var
,
4 var
,
Modulo 43051
1 var
,
2 var
,
3 var
,
4 var
,