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awkscientific-notation

Awk: Convert notation of a number while I multiply columns

Hi guys I have the following lines:

A=3.5e30
B=4.345e40

(File contains columns with numbers in this notation 1.2345678D+10)

sed 's/D/E/g' File | awk '{print $1, $6*'$A', 10^($9)*'$B', $13, $8}' > File2

The output that I'm getting is:

3.168808781403E+02 29825999184755995994350665720659968 71343531834366140263241767594070376448 ... etc

How can I have the 2nd and 3rd column with the same notation as in the first column? I.e,

Instead of having : 71343531834366140263241767594070376448

I want: 7.134353183436E+37

Just to let you know the answer is:

 sed 's/D/E/g' File | awk '{printf "%.12E %.12E %.12E %.12E %.12E\n", $1, $6*'$A', 10^($9)*'$B', $13,$8 }' > File2
Solution

  • If you want the so called scientific notation use printf and %E format specifier.

    Example:

    echo 71343531834366140263241767594070376448 | awk '{printf "%E",$1}'

    Output:

    7.134353E+37