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Full Discussion: Matching Numbers in Bash/AWK
Top Forums Shell Programming and Scripting Matching Numbers in Bash/AWK Post 302515232 by ian_gooch on Tuesday 19th of April 2011 02:17:31 PM
Old 04-19-2011
Hi Jim,

Perhaps nearest should be the key. How I'm thinking is that as the files are looping the nearest match can be found and that is the one to use.

So $2 on file one has a number of 53.728563 and the nearest match on $2 on file two is 53.78.
Once that number has been found then loop though $3 on both files, but only look at the 53.78 numbers (the number we found on $2) there will be quite a few on file 2 and return then nearest match which would be -2.44 and print out the rest..........

I dont think I'm making this sound easy am I? But please stay with me on this :-)

Cheers,
Ian

---------- Post updated at 01:17 PM ---------- Previous update was at 01:07 PM ----------

Hang on.....I will try and explain this again..

If I have one file called A.txt with
1
2
3
4
5
And I have another with
1.1
2.1
1.3
5.1
0.9
Is it possible to return a output file like this
1 0.9
1 1.1
1 1.3
2 2.1
5 5.1

As you can see I have matched up the nearest number from one file to another... I'm not sure whether this is possible to do, but this is what I desire :-)

Many thanks for looking at this

Cheers,
Ian
 

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nearbyintd64(3M)														  nearbyintd64(3M)

NAME
nearbyintd64(), nearbyintd128(), nearbyintd32() - decimal round to nearest integer functions SYNOPSIS
DESCRIPTION
returns the integer (represented as a number) nearest x according to the current (decimal) rounding direction mode. In the default rounding direction (round to nearest with ties to even), is the integer nearest x with the additional stipulation that if |-x|=1/2, then is even. If the current rounding direction is toward negative infinity, returns the same value as If the current rounding direction is toward posi- tive infinity, returns the same value as If the current rounding direction is toward zero, returns the same value as If the current round- ing direction is to nearest with ties awary from zero, returns the same value as differs from only in that raises the inexact exception if the result differs in value from the argument, while does not. is a version of it takes a argument and returns a result. is a version of it takes a argument and returns a These math functions are supported for HP-UX 11i Version 3 September 2008 Update and forward. result. USAGE
To use any of these functions, compile with the option. Make sure your program defines and then includes Link in the math library by specifying or on the linking command line. For more information, see the at the following site: RETURN VALUE
If x is returns x. If x is NaN, returns NaN. ERRORS
No errors are defined. SEE ALSO
ceild64(3M), fabsd64(3M), fe_dec_getround(3M), fe_dec_setround(3M), floord64(3M), fmodd64(3M), rintd64(3M), roundd64(3M), truncd64(3M), math(5). STANDARDS CONFORMANCE
These functions conform to ISO/IEC TR 24732, "Extension for the programming language C to support decimal floating-point arithmetic". HP Integrity Server Only nearbyintd64(3M)
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