The conversion of everything to long doubles internally makes seq a lot
slower than it needs to be in integer cases, I assume from the use of
floating-point multiplication for every line of output:
seq.c:257 x = first + i * step;
$ time seq 1000000 > /dev/null
real 0m1.616s
user 0m1.610s
sys 0m0.004s
$ time ./myseq 1000000 > /dev/null
real 0m0.280s
user 0m0.275s
sys 0m0.005s
Would it be possible to detect arguments which require no
floating-point, and handle them with integer addition?
Cheers,
Phil
