How to get defined precision after arithmetic operation using syncsort?


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Lightbulb How to get defined precision after arithmetic operation using syncsort?

I have to do some arithmetic operation on Field 8 which is calculated by Field 9/Field 7

Suppose i have data like :
Code:
0800123456|JAN|2017|JAN|2018|0800123456|0|0.0000|0.00|
0800234567|JAN|2017|JAN|2018|0800234567|4|2.5812|10.32|
0800666666|JAN|2017|JAN|2018|0800666666|2|1.7255|3.45|
0800111111|DEC|2015|DEC|2018|0800111111|2|1.8312|7.32|
0800123456|JAN|2017|JAN|2018|0800123456|0|0.0000|0.00|
0800234567|JAN|2017|JAN|2018|0800234567|4|2.5812|10.32|
0800111111|DEC|2015|DEC|2018|0800111111|4|1.8312|7.32|

I used following code :
Code:
syncsort << endofsort
/INFILE $IN_FILE "|"

/fields
P_NUMBER 1:-1: en,
B_MONTH 2:-2:,
B_YEAR 3:-3: en,
D_MONTH 4:-4:,
D_YEAR 5:-5: en,
C_NUMBER 6:-6: en,
CALL_MINS 7:-7: en,
PRICE_PER_UNIT 8:-8: en,
AMOUNT 9:-9: en,

/CONDITION UNIT_PRICE_ZERO CALL_MINS = 0

/KEYS P_NUMBER ascending,B_MONTH ascending, B_YEAR ascending, D_MONTH ascending,D_YEAR ascending,C_NUMBER ascending

/SUMMARIZE
TOTAL CALL_COUNT,
TOTAL CALL_MINS,
TOTAL AMOUNT,

/DERIVEDFIELD NEW_PRICE_PER_UNIT
IF UNIT_PRICE_ZERO then PRICE_PER_UNIT
ELSE AMOUNT/CALL_MINS en 20 10/4 COMPRESS

/DERIVEDFIELD DEL "|"

/OUTFILE $OUT_FILE OVERWRITE

/REFORMAT
P_NUMBER,B_MONTH,B_YEAR,D_MONTH,D_YEAR,C_NUMBER,CALL_MINS,PRICE_PER_UNIT,DEL,AMOUNT

/STATISTICS /* Sends SyncSort */
/END
endofsort

Here i want to maintain 4 precision of unit price field.
COMPRESS is used to compress extra spaces but it also compress zeros of precision.

Can anyone suggest how to get required output.

Last edited by MadeInGermany; 03-16-2018 at 04:11 AM.. Reason: added code tags
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pnmscalefixed(1)					      General Commands Manual						  pnmscalefixed(1)

NAME
pnmscalefixed - scale a portable anymap quickly, but less accurate DESCRIPTION
pnmscalefixed is the same thing as pnmscale except that it uses fixed point arithmetic internally instead of floating point, which makes it run faster. In turn, it is less accurate and may distort the image. Use the pnmscale man page with pnmscalefixed. This man page only describes the difference. pnmscalefixed uses fixed point 12 bit arithmetic. By contrast, pnmscale uses floating point arithmetic which on most machines is probably 24 bit precision. This makes pnmscalefixed run faster (30% faster in one experiment), but the imprecision can cause distortions at the right and bottom edges. The distortion takes the following form: One pixel from the edge of the input is rendered larger in the output than the scaling factor requires. Consequently, the rest of the image is smaller than the scaling factor requires, because the overall dimensions of the image are always as requested. This distortion will usually be very hard to see. pnmscalefixed with the -verbose option tells you how much distortion there is. The amount of distortion depends on the size of the input image and how close the scaling factor is to an integral 1/4096th. If the scaling factor is an exact multiple of 1/4096, there is no distortion. So, for example doubling or halving an image causes no dis- tortion. But reducing it or enlarging it by a third would cause some distortion. To consider an extreme case, scaling a 100,000 row image down to 50,022 rows would create an output image with all of the input squeezed into the top 50,000 rows, and the last row of the input copied into the bottom 22 rows of output. pnmscalefixed could probably be modified to use 16 bit or better arithmetic without losing anything. The modification would consist of a single constant in the source code. Until there is a demonstrated need for that, though, the Netpbm maintainer wants to keep the safety cushion afforded by the original 12 bit precision. pnmscalefixed does not have pnmscale 's -nomix option. 18 November 2000 pnmscalefixed(1)

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