What drl is telling you:
1. floating point numbers represent values correctly only to a certain level of precision
so the = part of a comparison does not work like you would think.
2. awk uses double precision floating point number for aritmetic operations, so #1 applies.
3. in /usr/include/math.h you will find macros defined:
these are the standard way of doing floating point comparisons on your system. Notice there is no "equal()", for reasons just explained.
i would like to enter (user input) a bunch of numbers seperated by space:
10 15 20 25
and use awk to print out any lines in a file that have matching numbers
so output is:
22 44 66 55 (10) 77 (20)
(numbers 10 and 20 matched for example)
is this possible in awk . im using gawk for... (5 Replies)
Hai,
Can you please guide me, to compare the floating point numbers.
Eg.
If
then
echo "value1 is grater "
fi
This code is not working properly when i excuted with floating values or real numbers (13 Replies)
Hi everyone,
I need to compare 2 big Floating/Real numbers in a script.
After the comparission it is showing worng values in my script.
echo "Enter value1"
read value1
echo "Enter value2"
read value2
Result=`echo "if($value1 > $value2) 1" | bc`
if ; then
echo "$value1 is... (4 Replies)
if the column1 and 2 in both files has same key (for example "a" and "a1") compare each first key value(a1 of a) of input2 (for example 1-4 or 65-69 not 70-100 or 44-40 etc) with all the values in input1.
if the range of first key value in input2 is outof range in input1 values named it as out... (54 Replies)
I am begining to learn bourne shell and as a practice I have written a script which when given the purchase price and percentage of discount calculates the savings.
I somehow cannot figure out why my script fails to do arthimatic calculation on real numbers.
Could anyone look at the script... (5 Replies)
Hello to all,
I hope some awk guru could help me.
I have 2 input files:
File1: Is the complete database
File2: Contains some numbers which I want to compare
File1:
"NUMBERKEY","SERVICENAME","PARAMETERNAME","PARAMETERVALUE","ALTERNATENUMBERKEY"... (9 Replies)
Hi Experts,
I am finding difficulty to get exact match:
file
OPERATING_SYSTEM=HP-UX
LOOPBACK_ADDRESS=127.0.0.1
INTERFACE_NAME="lan3"
IP_ADDRESS="10.53.52.241"
SUBNET_MASK="255.255.255.192"
BROADCAST_ADDRESS=""
INTERFACE_STATE=""
DHCP_ENABLE=0
INTERFACE_NAME="lan3:1"... (6 Replies)
Hi,
I'm trying to match a filename that could be called anything from vout001 to vout252 and was trying to do a small test but I'm not getting the result I thought I would..
Can some one tell me what I'm doing wrong?
*****@********>echo $mynumber ... (4 Replies)
I am trying to create a cronjob that will run on startup that will look at a list.txt file to see if there is a later version of a database using database.txt as the source. The matching lines are written to output.
$1 in database.txt will be in list.txt as a partial match. $2 of database.txt... (2 Replies)
In the awk below I am trying to output those lines that Match between file1 and file2, those Missing in file1, and those missing in file2. Using each $1,$2,$4,$5 value as a key to match on, that is if those 4 fields are found in both files the match, but if those 4 fields are not found then missing... (0 Replies)
Discussion started by: cmccabe
0 Replies
LEARN ABOUT CENTOS
clarnv
clarnv.f(3) LAPACK clarnv.f(3)NAME
clarnv.f -
SYNOPSIS
Functions/Subroutines
subroutine clarnv (IDIST, ISEED, N, X)
CLARNV returns a vector of random numbers from a uniform or normal distribution.
Function/Subroutine Documentation
subroutine clarnv (integerIDIST, integer, dimension( 4 )ISEED, integerN, complex, dimension( * )X)
CLARNV returns a vector of random numbers from a uniform or normal distribution.
Purpose:
CLARNV returns a vector of n random complex numbers from a uniform or
normal distribution.
Parameters:
IDIST
IDIST is INTEGER
Specifies the distribution of the random numbers:
= 1: real and imaginary parts each uniform (0,1)
= 2: real and imaginary parts each uniform (-1,1)
= 3: real and imaginary parts each normal (0,1)
= 4: uniformly distributed on the disc abs(z) < 1
= 5: uniformly distributed on the circle abs(z) = 1
ISEED
ISEED is INTEGER array, dimension (4)
On entry, the seed of the random number generator; the array
elements must be between 0 and 4095, and ISEED(4) must be
odd.
On exit, the seed is updated.
N
N is INTEGER
The number of random numbers to be generated.
X
X is COMPLEX array, dimension (N)
The generated random numbers.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Further Details:
This routine calls the auxiliary routine SLARUV to generate random
real numbers from a uniform (0,1) distribution, in batches of up to
128 using vectorisable code. The Box-Muller method is used to
transform numbers from a uniform to a normal distribution.
Definition at line 100 of file clarnv.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 clarnv.f(3)