I'm trying to get awk to do arithmetic functions with external variables and I'm getting an error that I cannot figure out how to fix.
Insight would be appreciated
money=$1
rate1=$(awk -F"\t " '/'$converting'/{print $3}' convert.table)
rate2=$(awk -F"\t"... (2 Replies)
Hi all.
I have a simple shell script shown below which calls an awk function and then print valid or invalid depending on the return value:
#!/bin/sh
cat file.CSV| nawk -f validate '
BEGIN { FS=","; counter=0}
{
FS=",";
gsub("\"","")
valid=validate($1);
... (2 Replies)
Hi ,
I m facing one problem with String usage in AWK . let me put what i need .
i have a function and there i used one string ( meta_string)
function 1 {
...................
...................
meta_string = " this string got... (1 Reply)
I learn using RS in awk to extract portion of file in this forum which is wonderful solution to the problem. However, I don't understand how exactly it operates.
I don't quite understand the mechanism behind how searching for /DATA2/ can result in extracting the whole section under "DATA2"
... (3 Replies)
Hi;
Is der ne to to use user defined functions for the values in awk
find $1 -type f -ls | nawk '{{print "|"$3"|"$5"|"$6"|"$8"|"$9"|"$10"|"} for(i=11;i<=NF;i++){printf("%s",$i)}}'
In above command i want to append some values returned by user functions on line.
thnks;
ajay (1 Reply)
hi all,
i have these server logs:
25-04-2012;192.168.70.31;1254545454545417;500.0;SUCCESS
25-04-2012;192.168.70.32;355666650914;315126423993;;General_ERROR_23
30-04-2012;192.168.70.33;e;null;null;Failure
30-04-2012;192.168.70.33;e;null;null;Failure... (4 Replies)
I have 7 functions those need to be executed as command line inputs, I tried with below code it’s not executing function. If I run the ./script 2 then fun2 should execute , how to initiate that function I tried case and if else also, how to initiate function from command line
if
then... (8 Replies)
Hi folks,
is there any recommendation, especially from a point of performance, about where to place a user-defined function in awk, like in BEGIN{} or if it is only need once at the end in END{}? Or doesn't it matter at all since, awk is so clever and only interprets it once, wherever it is... (3 Replies)
I wrote a very simple script to understand how to call user-defined functions from within awk after reading this post.
function my_func_local {
echo "In func $1"
}
export -f my_func_local
echo $1 | awk -F"/" '{for (k=1;k<=NF;k++) {
if ($k == "a" ) {
system("my_local_func $k")
}
else{... (19 Replies)
Discussion started by: sreyan32
19 Replies
LEARN ABOUT ULTRIX
atan
sin(3m)sin(3m)Name
sin, cos, tan, asin, acos, atan, atan2 - trigonometric functions and their inverses
Syntax
#include <math.h>
double sin(x)
double x;
float fsin(x)
float x;
double cos(x)
double x;
float fcos(x)
float x;
double tan(x)
double x;
float ftan(x)
float x;
double asin(x)
double x;
float fasin(x)
float x;
double acos(x)
double x;
float facos(x)
float x;
double atan(x)
double x;
float fatan(x)
float x;
double atan2(y,x)
double y,x;
float fatan2(y,x)
float y,x;
Description
The and functions return trigonometric functions of radian arguments x for double data types.
The and functions return trigonometric functions for float data types.
The and functions return the arc sine in the range -pi/2 to pi/2 for double and float data types, respectively.
The and functions return the arc cosine in the range 0 to pi for double and float data types, respectively.
The and functions return the arc tangent in the range -pi/2 to pi/2 for double and float data types, respectively.
The and functions return the arc tangent of y/x in the range -pi to using the signs of both arguments to determine the quadrant of the
return value for double and float data types, respectively.
Error (due to roundoff)
When P stands for the number stored in the computer in place of pi = 3.14159 26535 89793 23846 26433 ... . and "trig" stands for one of
"sin", "cos" or "tan", then the expression "trig(x)" in a program actually produces an approximation to trig(x*pi/P), and "atrig(x)"
approximates (P/pi)*atrig(x). The approximations are close.
P differs from pi by a fraction of an ulp; the difference is apparent only if the argument x is huge, and even then the difference is
likely to be swamped by the uncertainty in x. Every trigonometric identity that does not involve pi explicitly is satisfied equally well
regardless of whether P = pi. For example, sin(x)**2+cos(x)**2 = 1 and sin(2x) = 2sin(x)cos(x) to within a few ulps regardless of how big
x is. Therefore, the difference between P and pi is unlikely to effect scientific and engineering computations.
Return Values
All the double functions return NaN if NaN is passed in.
If |x| > 1 then (x) and (x) will return the default quiet NaN.
The function defines (0,0) = NaN.
See Alsohypot(3m), math(3m), sqrt(3m)
RISC sin(3m)