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Get Minimun from a Float values

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# 1  
Old 06-11-2009
Get Minimun from a Float values
Hi Guys,

here is a part of my source code. This part is reponsible to get the minimun of a few values:

Code:
..........

MAX=0.00

for a in `cat $OFILE`
                do
                       
                        if [ $a -gt $MAX ]
                        then
                                MAX=$(echo $a | nawk '{printf("%0.2f\n", $1);}')
                        fi

                  
                done
                
               printf "%s \t %s MB \t %s MB \t %s MB\n" $PORT $SUM1 $MAX $SUM >> $FILE
                
                MAX=0.00
.......

This works fine while the values are > 1. If the values are < 1 than this code is not able to identify the minimun.
I've already tried to set the MAX as float, but that didn't work, too.

Where is the mistake? The shell is ksh

Thanks in advance
# 2  
Old 06-11-2009
ksh (non ksh93) does not support float point arithmetic.
here's a work around:
Code:
#!/bin/ksh

a=1.72
b=1.71

if [ "$(echo "if (${a} > ${b}) 1" | bc)" -eq 1 ] ; then
   echo ">"
else
   echo "<"
fi

# 3  
Old 06-11-2009
thanks, this work like a charm
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