* test of xyplo regression
* for logarithms
* columns:
* 1: flag.  e = exponential curve, l = line
* 2: a value
* 3: 2^value
e 0 1
e 1 2
e 2 4
e 3 8
e 4 16
e 5 32
e 6 64
e 7 127
e 8 256
e 9 512
e 10 1024
l 1 1
l 1 2
l 1 3
l 1 4
l 1 5
l 1 6
l 1 7
l 1 8
l 1 9
l 1 10
l 1 11
l 1 12
l 1 13
l 1 14
l 1 15
l 1 16
l 1 17
l 1 18
l 1 19
l 1 20
l 1 21
l 1 22
l 1 23
l 1 24
l 1 25
l 1 26
l 1 27
l 1 28
l 1 29
l 1 30
l 1 31
l 1 32