hi all,
was wondering if there is another way to do calculations in ksh scripts other than using bc ?? i am using a script to calculate average response time and my script errors out after running for a bit.
e.g code i am using :
averageTime=$(print "$totalTime / $numberOfEntries" |... (2 Replies)
I need to be able to use the current date and calculate 7 days ago to be stored in another variable to be passed to a file in my Unix shell script. I need the date in the following format:
date '+%m/%d/%Y'
or
05/16/2006
How do I calculate date minus 7 days or 1 week ago? (8 Replies)
I am getting the error:
Runtime error (func=(main), adr=10): Divide by zero
When executing the mathematical expression:
echo "scale=2; 1-(0/0)"|bc
How to overcome this? (5 Replies)
Hi, I'm creating a loop that allows the user to enter any number, then their choice of operator and then another number until their operator choice is equal to =
But I am getting an error saying integer expression expected. Any explanation on why this is happening?
echo "Please enter a number"... (1 Reply)
Hello Guys,For my homework I must write a shell script to do this serie,
http://upload.wikimedia.org/math/f/8/f/f8f543d9ecd01c4ecca2a0b7bc1234a2.pngI know that I must use the "bc" for that, but for the script's itself i have no idea,(beginner)
Can you plz just help me for have some idea?... (1 Reply)
Hello Guys,For my homework I must write a shell script to do this serie,
http://upload.wikimedia.org/math/f/8/f/f8f543d9ecd01c4ecca2a0b7bc1234a2.pngI know that I must use the "bc" for that, but for the script's itself i have no idea,(beginner)
Can you plz just help me for have some idea?... (1 Reply)
Dear All,
I read some variables in a file and assigned as name for each of them.
If I do echo I am able to see the values as 1.0E-05,3.4,5.0E-03 etc,
Now I want to do some mathematical operations with them.
Lets say
1
1.0E-05*5.0E-03
expected ans is 5.0E-08
2
1.0E-05/5.0E-03
expected... (9 Replies)
I'm writing a script that will read all the fields of a text file into an array(if they are numeric), while at the same time computing the minimum and maximum values from the file. After that I want to output the average of all the numbers in the array.
The first problem I'm having is that many... (10 Replies)
Hi All,
I want to perform a mathematical operation on column. Can anyone please help?
Here is the sample of operation to be performed:
123 996 100
123 996 200
123 996 200 2015-09-21
123 996 100
123 996 200
123 996 100
What I want is to multiple all values of column # 3 by 100 and... (3 Replies)
Discussion started by: Zaib
3 Replies
LEARN ABOUT PHP
round
ROUND(3) 1 ROUND(3)round - Rounds a floatSYNOPSIS
float round (float $val, [int $precision], [int $mode = PHP_ROUND_HALF_UP])
DESCRIPTION
Returns the rounded value of $val to specified $precision (number of digits after the decimal point). $precision can also be negative or
zero (default).
Note
PHP doesn't handle strings like "12,300.2" correctly by default. See converting from strings.
PARAMETERS
o $val
- The value to round
o $precision
- The optional number of decimal digits to round to.
o $mode
- Use one of the following constants to specify the mode in which rounding occurs.
+--------------------+---------------------------------------------------+
| Constant | |
| | |
| | Description |
| | |
+--------------------+---------------------------------------------------+
| | |
| PHP_ROUND_HALF_UP | |
| | |
| | Round $val up to $precision decimal places away |
| | from zero, when it is half way there. Making 1.5 |
| | into 2 and -1.5 into -2. |
| | |
| | |
|PHP_ROUND_HALF_DOWN | |
| | |
| | Round $val down to $precision decimal places |
| | towards zero, when it is half way there. Making |
| | 1.5 into 1 and -1.5 into -1. |
| | |
| | |
|PHP_ROUND_HALF_EVEN | |
| | |
| | Round $val to $precision decimal places towards |
| | the next even value. |
| | |
| | |
|PHP_ROUND_HALF_ODD | |
| | |
| | Round $val to $precision decimal places towards |
| | the next odd value. |
| | |
+--------------------+---------------------------------------------------+
RETURN VALUES
The rounded value
EXAMPLES
Example #1
round(3) examples
<?php
echo round(3.4); // 3
echo round(3.5); // 4
echo round(3.6); // 4
echo round(3.6, 0); // 4
echo round(1.95583, 2); // 1.96
echo round(1241757, -3); // 1242000
echo round(5.045, 2); // 5.05
echo round(5.055, 2); // 5.06
?>
Example #2
$mode examples
<?php
echo round(9.5, 0, PHP_ROUND_HALF_UP); // 10
echo round(9.5, 0, PHP_ROUND_HALF_DOWN); // 9
echo round(9.5, 0, PHP_ROUND_HALF_EVEN); // 10
echo round(9.5, 0, PHP_ROUND_HALF_ODD); // 9
echo round(8.5, 0, PHP_ROUND_HALF_UP); // 9
echo round(8.5, 0, PHP_ROUND_HALF_DOWN); // 8
echo round(8.5, 0, PHP_ROUND_HALF_EVEN); // 8
echo round(8.5, 0, PHP_ROUND_HALF_ODD); // 9
?>
Example #3
$mode with precision examples
<?php
/* Using PHP_ROUND_HALF_UP with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_UP); // 1.6
echo round( 1.54, 1, PHP_ROUND_HALF_UP); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_UP); // -1.6
echo round(-1.54, 1, PHP_ROUND_HALF_UP); // -1.5
/* Using PHP_ROUND_HALF_DOWN with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_DOWN); // 1.5
echo round( 1.54, 1, PHP_ROUND_HALF_DOWN); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_DOWN); // -1.5
echo round(-1.54, 1, PHP_ROUND_HALF_DOWN); // -1.5
/* Using PHP_ROUND_HALF_EVEN with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_EVEN); // 1.6
echo round( 1.54, 1, PHP_ROUND_HALF_EVEN); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_EVEN); // -1.6
echo round(-1.54, 1, PHP_ROUND_HALF_EVEN); // -1.5
/* Using PHP_ROUND_HALF_ODD with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_ODD); // 1.5
echo round( 1.54, 1, PHP_ROUND_HALF_ODD); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_ODD); // -1.5
echo round(-1.54, 1, PHP_ROUND_HALF_ODD); // -1.5
?>
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | The $mode parameter was introduced. |
| | |
| 5.2.7 | |
| | |
| | The inner workings of round(3) was changed to |
| | conform to the C99 standard. |
| | |
+--------+---------------------------------------------------+
SEE ALSO ceil(3), floor(3), number_format(3).
PHP Documentation Group ROUND(3)