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Convert floating point to a number

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# 1  
Old 09-27-2017
Convert floating point to a number
Hello Guys,
I have a floating point number 1.14475E+15 I want to convert this number in to full number (Integer or Big integer). I tried couple of functions it did not work. When I use INT=${FLOAT/.*} I am getting value as 1. I don't want a truncated value

Code:
#!/bin/bash
# Welcome to the Interactive Shell Tutorial.
# Start by choosing a chapter and
# write your code in this window.
FLOAT=1.14475E+15
#INT=${FLOAT/.*}
#INT=${FLOAT/\.*}
S[i] = INT(1.14475E+15)
echo $S[i]

Thanks
Last edited by RudiC; 09-27-2017 at 05:38 PM..
# 2  
Old 09-27-2017
Okay, you've showed us what you don't want, but I can't tell what you do want. What would a "good" result look like?

Shell does not understand floating point numbers. You'll have to pipe it into bc or awk or some other program/tool/language which does.

There are a lot of syntax errors in your code, also. You can't do X = value you have to do X=value Also there is no INT( ) function in bash. Besides which, functions don't even work that way in bash.
Last edited by Corona688; 09-27-2017 at 04:54 PM..
# 3  
Old 09-27-2017
Quote:
Originally Posted by Corona688
Okay, you've showed us what you don't want, but I can't tell what you do want. What would a "good" result look like?

Shell does not understand floating point numbers. You'll have to pipe it into bc or awk or some other program/tool/language which does.

There are a lot of syntax errors in your code, also. You can't do X = value you have to do X=value Also there is no INT( ) function in bash. Besides which, functions don't even work that way in bash.
Thank you for the reply. I want to know what is the total number like 1,144,750,000,000,000. I do not know what the right value.. but some thing like that.
# 4  
Old 09-27-2017
Code:
$ echo "1.14475E+15" | awk '{ V=$1+0 ; printf("%.0f\n", V); }'
1144750000000000

$ V=$( echo "1.14475E+15" | awk '{ V=$1+0 ; printf("%.0f\n", V); }' )

$ echo $V
1144750000000000

$

# 5  
Old 09-27-2017
Code:
awk 'BEGIN {printf "%.f\n", "1.14475E+15"}'
1144750000000000

This User Gave Thanks to RudiC For This Post:
Corona688
# 6  
Old 09-27-2017
There is also a printf command
Code:
FLOAT=1.14475E+15
INT=$(printf "%.f" "$FLOAT")
echo $INT

This User Gave Thanks to MadeInGermany For This Post:
Corona688
# 7  
Old 09-28-2017
Hi.
Quote:
Originally Posted by skatpally
I want to know what is the total number like 1,144,750,000,000,000.
If you have a utility such as some of the results for a Google search like commify comma insertion linux OR unix you could use:
Code:
$ commify $(printf "%.f" "$FLOAT")
1,144,750,000,000,000

With a system like:
Code:
OS, ker|rel, machine: Linux, 3.16.0-4-amd64, x86_64
Distribution        : Debian 8.9 (jessie) 
bash GNU bash 4.3.30
commify - ( local: RepRev 1.3, ~/bin/commify, 2014-10-09 )

Best wishes ... cheers, drl
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