Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Check if input is an integer or a floating point? Post 302403231 by ungalnanban on Thursday 11th of March 2010 11:37:36 PM
Old 03-12-2010
MySQL

Are you expecting this.
See the following shell script, It will check the given string is integer or float.

Code:
echo "123" | grep "^[0-9]*$"
val=`echo $?`
if [[ $val == 0 ]]
then
        echo "Given string is intiger"
else
        echo "Invalide"
fi
echo "123.3" | grep "^[0-9]*[.][0-9]*$"
val=`echo $?`
if [[ $val == 0 ]]
then
        echo "Given string is float"
else
        echo "Invalide"
fi


Last edited by ungalnanban; 03-12-2010 at 12:52 AM.. Reason: code alignment
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Floating Point Division

Does anyone have a simple way of doing floating point ("fp") division? For example, if I divide 3 by 5, I can get 0.6. The built-in calc (`bc`) will perform fp multiplication, but not division, at least not straight-up (i.e., starting bc and just typing in 3/5). I am trying to do this using... (1 Reply)
Discussion started by: gsatch
1 Replies

2. Programming

floating point problem

Hi all! Hi all! I am working with a problem to find the smallest floating point number that can be represented. I am going in a loop ,stating with an initial value of 1.0 and then diving it by 10 each time thru the loop. So the first time I am getting o.1 which I wanted.But from the next... (4 Replies)
Discussion started by: vijlak
4 Replies

3. Shell Programming and Scripting

Replace floating-point by integer in awk

Hi, I am trying to write a script to extract multiple sets of data from a chemistry output file. The problem section is in the following format... Geometry "geometry" -> "geometry" 1 Pd 46.0000 -0.19290971 0.00535260 0.02297606 2 P ... (7 Replies)
Discussion started by: smadonald1
7 Replies

4. Programming

Floating point error in C

Hi, see the simple code below double i; i=8080.9940; printf(" val :%.30f\n",i); output i m getting is val :8080.993999999999700000000000000 when i m expecting val :8080.9940 what happens?how can i avoid it? thanks... (2 Replies)
Discussion started by: Hara
2 Replies

5. Linux

Floating point exception !!!

Hi, I have linux fedora 4 ver., 2.6 kernal. And qmail & mysql & samba servers are already configured on this server. When I try to install any package like squidguard ,dansguardian,webmin,rsnapshots with command rpm -ivh . It is giving error as “Floating point exception" Snap View is... (3 Replies)
Discussion started by: ssk01
3 Replies

6. Programming

Floating point Emulator

what is floating point emulator(FPE)? where and why it is used? (1 Reply)
Discussion started by: pgmfourms
1 Replies

7. Shell Programming and Scripting

floating point numbers in if

# if > then > echo "1" > else > echo "2" > fi -bash: How can i compare floating point numbers inside statement? (15 Replies)
Discussion started by: proactiveaditya
15 Replies

8. Shell Programming and Scripting

Arithmetic in floating point

is it not possible to simply di aritmetic without using bc or awk i have tried folllowing operatrions but they support only integer types plz suggest me code for floating using values stored in the variables.the ans i get is integer and if i input floating values i get error numeric constant... (6 Replies)
Discussion started by: sumit the cool
6 Replies

9. Shell Programming and Scripting

Floating point to integer in variable length lines

Hi ! I'm looking for a way to transform certain floating point numbers in a one-line, variable length file to integers. I can do this in a crude way with sed : sed -e 's/0\.\(\):/\1:/g' -e 's/0\.0\(\):/\1:/g' -e 's/1\.000:/100:/g' myfile ... but this doesn't handle the rounding correctly. ... (3 Replies)
Discussion started by: jossojjos
3 Replies

10. Programming

Floating Point

Anyone help me i cant found the error of floating point if needed, i added the code complete #include <stdio.h> #include <string.h> #include <stdlib.h> #include <ctype.h> typedef struct { int hh; int mm; int ss; char nom; int punt; }cancion; typedef struct... (9 Replies)
Discussion started by: Slasho
9 Replies
MAX(3)									 1								    MAX(3)

max - Find highest value

SYNOPSIS
mixed max (array $values) DESCRIPTION
mixed max (mixed $value1, mixed $value2, [mixed $...]) If the first and only parameter is an array, max(3) returns the highest value in that array. If at least two parameters are provided, max(3) returns the biggest of these values. Note Values of different types will be compared using the standard comparison rules. For instance, a non-numeric string will be com- pared to an integer as though it were 0, but multiple string values will be compared alphanumerically. The actual value returned will be of the original type with no conversion applied. PARAMETERS
o $values - An array containing the values. o $value1 - Any comparable value. o $value2 - Any comparable value. o $... - Any comparable value. RETURN VALUES
max(3) returns the parameter value considered "highest" according to standard comparisons. If multiple values of different types evaluate as equal (e.g. 0 and 'abc') the first provided to the function will be returned. EXAMPLES
Example #1 Example uses of max(3) <?php echo max(2, 3, 1, 6, 7); // 7 echo max(array(2, 4, 5)); // 5 // The string 'hello' when compared to an int is treated as 0 // Since the two values are equal, the order they are provided determines the result echo max(0, 'hello'); // 0 echo max('hello', 0); // hello // Here we are comparing -1 < 0, so 'hello' is the highest value echo max('hello', -1); // hello // With multiple arrays of different lengths, max returns the longest $val = max(array(2, 2, 2), array(1, 1, 1, 1)); // array(1, 1, 1, 1) // Multiple arrays of the same length are compared from left to right // so in our example: 2 == 2, but 5 > 4 $val = max(array(2, 4, 8), array(2, 5, 1)); // array(2, 5, 1) // If both an array and non-array are given, the array will be returned // as comparisons treat arrays as greater than any other value $val = max('string', array(2, 5, 7), 42); // array(2, 5, 7) // If one argument is NULL or a boolean, it will be compared against // other values using the rule FALSE < TRUE regardless of the other types involved // In the below example, -10 is treated as TRUE in the comparison $val = max(-10, FALSE); // -10 // 0, on the other hand, is treated as FALSE, so is "lower than" TRUE $val = max(0, TRUE); // TRUE ?> SEE ALSO
min(3), count(3). PHP Documentation Group MAX(3)
All times are GMT -4. The time now is 12:37 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy