math help


 
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# 1  
Old 04-14-2009
math help

$ x=1
$ y=1.5
$ z=$((x*y))
bash: 1.5: syntax error: invalid arithmetic operator (error token is ".5")

What's wrong?
# 2  
Old 04-14-2009
bash doesn't do floats. pipe your result to bc or do the math in awk
Code:
# echo "1*1.5" |bc
# awk 'BEGIN{print 1*1.5}'

# 3  
Old 04-15-2009
Quote:
Originally Posted by ghostdog74
bash doesn't do floats. pipe your result to bc or do the math in awk
Code:
# echo "1*1.5" |bc
# awk 'BEGIN{print 1*1.5}'

it worked
thanks alot
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