Hi my problem is that my data set is monotonically increasing but towards the end the of the data it looks like it does below ,where some of the x[i-1] = x[i] as shown below. This causes an error to be raised in GSL because it thinks that the values are not monotonically increasing. Is there a solution, fix or work around for this problem?

the values are already double precision ,this particular data set starts at 9.86553e-06 and ends at .999999

would the only solution be to offset every value in a for loop?

0.999981
0.999981
0.999981
0.999982
0.999982
0.999983
0.999983
0.999983
0.999984
0.999984
0.999985
0.999985
0.999985