How to sum the value with negative values?

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# 1  
Old 11-16-2016
How to sum the value with negative values?

Hi Gurus,

I have requirement need to sum the value, the logic is if the value is negative then time -1, I tried below two ways. one is failed, another one doesn't work.

awk -F"," '{if($8< 0 $8*-1 else $8) sum+=$8}{print sum, $8} END{printf("%.2f\n",sum)}'
 awk -F"," '{sum+=abs($8)}{print sum, $8} END{printf("%.2f\n",sum)}'

any suggestion about this.

thanks in advance.
# 2  
Old 11-16-2016
How about


You need to declare/define the abs function if you want to use it.
This User Gave Thanks to RudiC For This Post:
# 3  
Old 11-16-2016
awk -F "," '$8 < 0{$8=$8*-1} {sum+=$8} END {printf "%.2f\n", sum}' file

This User Gave Thanks to balajesuri For This Post:
# 4  
Old 11-16-2016
Hello ken6503,

Could you please try following and let me know if this helps you.
awk  -F"," 'function abs(value){sum+=value;return sum} {abs($8)}{;print sum OFS $8} END{printf("%.2f\n",sum)}'   Input_file

EDIT: Adding one more little modified version of above solution.
awk  -F"," 'function abs(value){sum+=value;print sum OFS value} {abs($8)} END{printf("%.2f\n",sum)}'  Input_file

R. Singh

Last edited by RavinderSingh13; 11-16-2016 at 02:18 PM.. Reason: Added one more solution successfully now.
This User Gave Thanks to RavinderSingh13 For This Post:
# 5  
Old 11-16-2016
As always, thanks all of you give me such great idea.

thanks again.
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