Hi monks; thanks for your help with my date formatting question yesterday.

Today I find myself needing to round integer values upwards, based on a sliding scale. It looks something like this:

# Less than 10
1 - 5:  5
6 - 9: 10

# 10 to 100
10 - 14: 15
15 - 19: 20
20 - 24: 25
etc.

# 100 to 1000
100 - 124: 125
125 - 149: 150
150 - 174: 175
etc.

# 1000 and beyond
1000 - 1249: 1250
1250 - 1549: 1500
1500 - 1749: 1750
etc.
[download]

As you can tell, the pattern isn't too hard to deduce. I believe I can use log10() to figure out which category I'm in, but what methods do I use to perform rounding operations based on a ruleset like this? Is there something like ceiling() with the ability to define my boundries?

Thanks all!
ibanix

$ echo '$0 & $0 &' > foo; chmod a+x foo; foo;