Visit Our UNIX and Linux User Community


sqrt


 
Thread Tools Search this Thread
Top Forums Programming sqrt
# 1  
Old 06-03-2002
sqrt

Hi!

when i'm trying to compile this lite example
on my linux machine I'll get errors and i don't know why..

#include <stdio.h>
#include <math.h> /* needed by sqrt() */

int main()
{
printf("%f", sqrt(10.0));

return (0);
}

this is the error:
/tmp/cc33hNVHK.o: In function `main`:
/tmp/cc3hNVHK.o(.text+0x14): undefined reference to `sqrt`
collect2: ld returned 1 exit status
# 2  
Old 06-03-2002
sqrt is in the math library. Add -lm to your cc command and ld will find it.

Previous Thread | Next Thread

6 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Q: Is SQRT(n) possible in a POSIX compliant shell? A: Yes within limits.

Hi all... This is just a fun project to see if it is possible to get a square root of a positive integer from 1 to 9200000 to 6 decimal places on a 64 bit architecture machine. It is coded around dash and the results show the values from 0 to 10000. Complex numbers can easily be catered for by... (3 Replies)
Discussion started by: wisecracker
3 Replies

2. UNIX for Dummies Questions & Answers

sqrt in bash

Hi, i have a the following script: #!/bin/bash a=3 b=9 let "c= b*a" let "d=sqrt $c " echo $d But when i execute the code, it gives me the an error saying: line 5: let: d=sqrt 27 : syntax error in expression (error token is "27 ") Can any body tell me what I'm doing wrong? (5 Replies)
Discussion started by: limadario
5 Replies

3. Programming

C Library reference error using sqrt() - will not compile.

This so basic that it should work.... Any ideas would be appreciared. Using a number directly in the sqrt allows it to compile. primrose > cat a.c #include <stdio.h> #include <math.h> int main(void) { double abcd=9; printf("%f\n",sqrt(abcd)); } primrose > gcc a.c Undefined first... (2 Replies)
Discussion started by: plastichead
2 Replies

4. Shell Programming and Scripting

how can i find sqrt of a any number without using expr

hi friends can any body tell me how can i find sqrt of a any given number without using expr in bash shell while i am doing i got some errors please take a look and code is here x=$((( ( sqrt($1) ) | bc ))) echo $x $ sh quadratic-eqn-roots.sh 9 quadratic-eqn-roots.sh: line 12: ( (... (6 Replies)
Discussion started by: srinivas2828
6 Replies

5. Shell Programming and Scripting

How to create SQRT function in catenate file

HI, I have a file which i catenate and using the fields in the file, I would like to get sqrt of it. I tried to man the function but it normally would need an echo as well as bc. What I am intending to find out is catenate a file where let say cat a.txt| awk ' { t= h*($3+$2); t=... (7 Replies)
Discussion started by: ahjiefreak
7 Replies

6. Programming

sqrt is not find???

I was writing a simple program in linux, which includes sqrt function of c. I included the math.h. But when I use gcc to compile it, it gave an error message: /home/murat/tmp/ccOv9upo.o(.text+0x4b): In function `main': : undefined reference to `sqrt' collect2: ld returned 1 exit status I... (2 Replies)
Discussion started by: murataht
2 Replies

Featured Tech Videos