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UNIX for Beginners Questions & Answers
Matrix multiplication
Post 302968119 by Akang on Friday 4th of March 2016 02:19:14 AM
03-04-2016
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1. Linux
Hello there,
how do i multiply a fraction and a whole number? Example 20% of 50,000.
I had gotten 0.2 using the following:
chk=echo 20 100 | awk `{print $1/$2}`
echo $chk
$chk \* 50000 displays the error: non-numeric expression. (1 Reply)
Discussion started by: alby
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2. Shell Programming and Scripting
Suppose i have a file A
1*2*3*4
2*4*4*22
and second file B
2*3*4*5
4*4*6*7
By multiplying file A by file B that is file A by first column in file B respectively
output shud be
2*6*12*20
8*16*24*154
my code is
=$1
next
}
{for (f=1;f<=NF;f++) (2 Replies)
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Hi,
I am writing a script in Bourne shell
#!/bin/sh
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total=`quota -v | tail -1 | awk '{print $3}'`
echo "$used"
echo "$total"
perc=`expr ${used} / ${total} * 100 | bc`
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4. Shell Programming and Scripting
Hello, all!
I am struggling with a short script to read a diagonal matrix for later retrieval.
1.000 0.234 0.435 0.123 0.012 0.102 0.325 0.412 0.087 0.098
1.000 0.111 0.412 0.115 0.058 0.091 0.190 0.045 0.058
1.000 0.205 0.542 0.335 0.054 0.117 0.203 0.125
1.000 0.587 0.159 0.357... (11 Replies)
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5. UNIX for Dummies Questions & Answers
Hi,
I would like to carry out a multiplication in a for loop but some how I get always zero. The result of the multiplication must be assigned to the variable x.
Here is teh code
for (( i=1;i<=15;i++)); do
x=$( printf "%s\n " 'scale = 10; i*5.0*335.0*3.0/1000.0' | bc)
echo $x $i... (5 Replies)
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Hi,
i have file1 which looks like:
x1 y1 z1
x2 y2 z2
...(and so on)
and file2 which looks like:
a11 a12 a13
a21 a22 a23
a31 a32 a33
and i want to replace file1 with the following values:
x1' y1' z1'
x2' y2' z2'
...(and so on) (2 Replies)
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7. Ubuntu
Hi all,
Is there a way to convert full data matrix to linearised left data matrix?
e.g full data matrix
Bh1 Bh2 Bh3 Bh4 Bh5 Bh6 Bh7
Bh1 0 0.241058 0.236129 0.244397 0.237479 0.240767 0.245245
Bh2 0.241058 0 0.240594 0.241931 0.241975 ... (8 Replies)
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8. Programming
Hi all, newbie here.
Does anyone know if it is possible to use GCC or Clang to multiply
two unsigned numbers and have it use for intel instructions, the mull instruction or an imul. I can't figure how to word this to accomplish this task:
(int)(((unsigned long long)result * (unsigned)2290649225)... (4 Replies)
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Hi there! I have two files like below
File1(with a header, ~1000 rows, ~50 columns)
ID1 ID2 ID3 ID4 ID5 MI1_A MI1_H MI2_A MI2_H
0 1 0 0 0 1 0 2 1
0 2 0 0 0 2 1 0 1
File2 (without a header, ~50 rows)
MI1 A 0.4 3.1
MI2 B -0.2 0.1
Output
ID2 M1_A M2_A
1 1*0.4 2*-0.2
2 2*0.4 0*-0.2
... (22 Replies)
Discussion started by: Akang
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10. Homework & Coursework Questions
How can I produce this kind of output?
Enter a number: 3
MULTIPLICATION TABLE:
0 1 2 3
1 1 2 3
2 2 4 6
3 3 6 9
When you enter a number, it should show you the corresponding multiplication table. Plus we need to use for loops that I do not actually know. Thanks in advance! Here is my... (2 Replies)
Discussion started by: larkha
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LEARN ABOUT CENTOS
tapset::string
tapset::string(3stap) tapset::string(3stap) NAME
tapset::string - systemtap string tapset DESCRIPTION
strlen Returns the length of a string See function::strlen(3stap) for details. substr Returns a substring See function::substr(3stap) for details. stringat Returns the char at a given position in the string See function::stringat(3stap) for details. isinstr Returns whether a string is a substring of another string See function::isinstr(3stap) for details. text_str Escape any non-printable chars in a string See function::text_str(3stap) for details. text_strn Escape any non-printable chars in a string See function::text_strn(3stap) for details. - strtol Convert a string to a long See function::-strtol(3stap) for details. isdigit Checks for a digit See function::isdigit(3stap) for details. SEE ALSO
function::strlen(3stap), function::substr(3stap), function::stringat(3stap), function::isinstr(3stap), function::text_str(3stap), function::text_strn(3stap), function::-(3stap), function::strtol(3stap), function::isdigit(3stap), stap(1), stapprobes(3stap) IBM
--- tapset::string(3stap)