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Full Discussion: Ceil not working as function in awk statement
Top Forums Shell Programming and Scripting Ceil not working as function in awk statement Post 302877498 by siramitsharma on Sunday 1st of December 2013 11:06:37 PM
Old 12-02-2013
Ceil not working as function in awk statement
Hi,
I have the following code in which i am trying to find ceil of 10th & 11th fields. For finding ceil i have a function in the awk statement. When i test it for some values say on command line it gives correct response(say $10=0 & $11=750). But when the same value occurs in a file having more 3 millions records(it is just an example & behaviour is abrupt for some cases), the value gets impacted. Can you please suggest in case some modifications are required.

Code:
function pdsnrater()
 {
  awk -F"|" ' 
  function ceil(val) { return (val == int(val)) ? val : int(val)+1}
  { 
   if ($5 == "MB")
   printf("%s,%s,%s,%s,%s,%d,%s,%s,%s,%s,%s,%s,%d,%s,%s,%s\n",$1,$2,$3,$4,$6,ceil(($10+$11)/1024/1024),$8,$9,$10,$11,$12,$13,$14,$15,$16,$5) 
   else
   printf("%s,%s,%s,%s,%s,%d,%s,%s,%s,%s,%s,%s,%d,%s,%s,%s\n", $1,$2,$3,$4,$6,ceil(($10+$11)/1024/10),$8,$9,$10,$11,$12,$13,$14,$15,$16,$5)
  } ' FS="|" OFS="|" $1 > $1.tmp
  mv $1.tmp $1
}

 

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LEARN ABOUT OPENSOLARIS

ceilf

ceil(3M)						  Mathematical Library Functions						  ceil(3M)

NAME

       ceil, ceilf, ceill - ceiling value function

SYNOPSIS

       c99 [ flag... ] file... -lm [ library... ]
       #include <math.h>

       double ceil(double x);

       float ceilf(float x);

       long double ceill(long double x);

DESCRIPTION

       These functions compute the smallest integral value not less than x.

RETURN VALUES

       Upon  successful  completion, the ceil(), ceilf(), and ceill() functions return the smallest integral value not less than x, expressed as a
       type double, float, or long double, respectively.

       If x is NaN, a NaN is returned.

       If x is +-0 or +-Inf, x is returned.

USAGE

       The integral value returned by these functions need not be expressible as an int or long int. The return  value	should	be  tested  before
       assigning it to an integer type to avoid the undefined results of an integer overflow.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       feclearexcept(3M), fetestexcept(3M), floor(3M), isnan(3M), math.h(3HEAD), attributes(5), standards(5)

SunOS 5.11							    12 Jul 2006 							  ceil(3M)
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