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How to compare floating point numbers in shell script?


 
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# 1  
Old 11-27-2009
How to compare floating point numbers in shell script?

How can we compare 2 floating point numbers in SHELL script?
# 2  
Old 11-27-2009
better to compare them as string..
i mean use =(equal to) or !=(not equal to) etc...
# 3  
Old 11-27-2009
ksh93:
Code:
if [[ 1.4 -gt 1.39999 ]]; then
  echo hallo
fi

Code:
if (( 1.4 > 1.39999 )) ; then 
  echo hallo
fi

# 4  
Old 11-27-2009
Quote:
Originally Posted by dearanik
How can we compare 2 floating point numbers in SHELL script?
search the forum next time. Recent similar thread
# 5  
Old 11-27-2009
man expr, expr evaluates mathematical expressions in sh scripts.
# 6  
Old 11-27-2009
Quote:
Originally Posted by gcampton
man expr, expr evaluates mathematical expressions in sh scripts.
only for integers.
# 7  
Old 11-28-2009
Quote:
Originally Posted by Scrutinizer
ksh93:
Code:
if [[ 1.4 -gt 1.39999 ]]; then
  echo hallo
fi

Code:
if (( 1.4 > 1.39999 )) ; then 
  echo hallo
fi

all these codes are for integers. What to do in case of floats?

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