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Full Discussion: problem with floating point numbers in awk
Top Forums Shell Programming and Scripting problem with floating point numbers in awk Post 76115 by kanagias on Friday 24th of June 2005 01:51:28 PM
Old 06-24-2005
i just want to do simple mathematical operations.to be more clear here is a test awk script i used

BEGIN{}

{

num = $1
sum += num

}

END {
print sum
}

where column 1 contains the floating point numbers
print sum produces 0...

i tried to add 0.0 to num to force to be treated as number and not as string but that didnt work either
 

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LEARN ABOUT DEBIAN

tcttest

TCTTEST(1)							   Tokyo Cabinet							TCTTEST(1)

NAME

       tcttest - test cases of the table database API

DESCRIPTION

       The command `tcttest' is a utility for facility test and performance test.  This command is used in the following format.  `path' specifies
       the path of a database file.  `rnum' specifies the number of iterations.  `bnum' specifies the number of  buckets.   `apow'  specifies  the
       power of the alignment.	`fpow' specifies the power of the free block pool.

	      tcttest  write  [-mt]  [-tl] [-td|-tb|-tt|-tx] [-rc num] [-lc num] [-nc num] [-xm num] [-df num] [-ip] [-is] [-in] [-it] [-if] [-ix]
	      [-nl|-nb] [-rnd] path rnum [bnum [apow [fpow]]]
		     Store records with columns "str", "num", "type", and "flag".
	      tcttest read [-mt] [-rc num] [-lc num] [-nc num] [-xm num] [-df num] [-nl|-nb] [-rnd] path
		     Retrieve all records of the database above.
	      tcttest remove [-mt] [-rc num] [-lc num] [-nc num] [-xm num] [-df num] [-nl|-nb] [-rnd] path
		     Remove all records of the database above.
	      tcttest rcat [-mt] [-tl] [-td|-tb|-tt|-tx] [-rc num] [-lc num] [-nc num] [-xm num] [-df num] [-ip] [-is]	[-in]  [-it]  [-if]  [-ix]
	      [-nl|-nb] [-pn num] [-dai|-dad|-rl|-ru] path rnum [bnum [apow [fpow]]]
		     Store records with partway duplicated keys using concatenate mode.
	      tcttest misc [-mt] [-tl] [-td|-tb|-tt|-tx] [-nl|-nb] path rnum
		     Perform miscellaneous test of various operations.
	      tcttest wicked [-mt] [-tl] [-td|-tb|-tt|-tx] [-nl|-nb] path rnum
		     Perform updating operations selected at random.

       Options feature the following.

	      -mt : call the function `tctdbsetmutex'.
	      -tl : enable the option `TDBTLARGE'.
	      -td : enable the option `TDBTDEFLATE'.
	      -tb : enable the option `TDBTBZIP'.
	      -tt : enable the option `TDBTTCBS'.
	      -tx : enable the option `TDBTEXCODEC'.
	      -rc num : specify the number of cached records.
	      -lc num : specify the number of cached leaf pages.
	      -nc num : specify the number of cached non-leaf pages.
	      -xm num : specify the size of the extra mapped memory.
	      -df num : specify the unit step number of auto defragmentation.
	      -ip : create the number index for the primary key.
	      -is : create the string index for the column "str".
	      -in : create the number index for the column "num".
	      -it : create the string index for the column "type".
	      -if : create the token inverted index for the column "flag".
	      -ix : create the q-gram inverted index for the column "text".
	      -nl : enable the option `TDBNOLCK'.
	      -nb : enable the option `TDBLCKNB'.
	      -rnd : select keys at random.
	      -pn num : specify the number of patterns.
	      -dai : use the function `tctdbaddint' instead of `tctdbputcat'.
	      -dad : use the function `tctdbadddouble' instead of `tctdbputcat'.
	      -rl : set the length of values at random.
	      -ru : select update operations at random.

       This command returns 0 on success, another on failure.

SEE ALSO

       tctmttest(1), tctmgr(1), tctdb(3), tokyocabinet(3)

Man Page							    2011-02-12								TCTTEST(1)
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