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Add non-integers using ksh

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# 15  
Old 04-30-2007
Thanks everyone for your help.

Perderabo - When I tried your method for "1188 / 1454.07 * 100" it came back as 80.0 not 81.7. So I dont think I can use it.

So I am going to go with the following. This way I can use it to figure out percentages along with any other arithmetic I need. It will also display the tenths.

me> cat test.sh
#!/usr/bin/sh

USED=1188
TOTAL=1454.07

#Function to deal with floating-point arithmetic
calc_to_tenths()
{
awk 'BEGIN{EQUATION='"$*"';printf("%0.1f\n",EQUATION)}'
}

calc_to_tenths "$USED / $TOTAL * 100"
calc_to_tenths "4.7 + 1.2"
calc_to_tenths "4 + 1"

me> ./test.sh
81.7
5.9
5.0
# 16  
Old 04-30-2007
Quote:
Originally Posted by 2dumb
Perderabo - When I tried your method for "1188 / 1454.07 * 100" it came back as 80.0 not 81.7. So I dont think I can use it.
Oh,well. I guess that not everyone can use everything. But for the record, I get 81.70100.
Code:
#! /usr/bin/ksh

bc |&
print -p scale=5

function calc
{
        typeset result
        print -p "$@"
        read -p result
        echo "$result"
}



calc "1188 / 1454.07 * 100"
exit 0
$ ./testcalc
81.70100

# 17  
Old 04-30-2007
Your right I messed it up, I had "print -p scale=1" instead of "print -p scale=5". How would I have it output 81.7 instead of 81.70100?

Quote:
Originally Posted by Perderabo
Oh,well. I guess that not everyone can use everything. But for the record, I get 81.70100.
Code:
#! /usr/bin/ksh

bc |&
print -p scale=5

function calc
{
        typeset result
        print -p "$@"
        read -p result
        echo "$result"
}



calc "1188 / 1454.07 * 100"
exit 0
$ ./testcalc
81.70100

# 18  
Old 04-30-2007
Quote:
Originally Posted by 2dumb
How would I have it output 81.7 instead of 81.70100?
Code:
printf "%.1f\n" $(calc "1188 / 1454.07 * 100")

# 19  
Old 04-13-2009
it was of great help thanks a lot
Thanks a lot
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