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Rounding a decimal

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# 1  
Old 03-13-2010
Rounding a decimal


I am currently using tcsh

I am trying to round a decimal number to the ten-thousandths place
For instance:
1.23456 is rounded up towards 1.2346

I am not looking for truncation, but for rounding. Anyone know how to do this with awk or expr?

# 2  
Old 03-13-2010
printf will do that.

man printf
# 3  
Old 03-14-2010
$ printf "%.4f\n" 1.23456


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Binary numbers are expressed in terms of a power of 2 instead of a power of 10.
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