math.h not working? o.0

Thread Tools Search this Thread
Top Forums Programming math.h not working? o.0
# 1  
Old 03-19-2002
Question math.h not working? o.0

Alright, umm i cant get this to work.
im looking at some example and a book i have.
when i try to compile my program i get an error message.
ld: 0711-317 ERROR: Undefined symbol: .sqrt
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.

I did #include<math.h> after my stdio.h at the top of the program. I even tried replacing sqrt with the power function; same error. (except it was .pow instead of .sqrt)

this is my function
float squareRootValue(int i){
      return (float) sqrt(i);

I'm passing a number to the function that will be rooted. does anyone know whats wrong? if you need more code, please let me know. im on an AIX 4 system.
# 2  
Old 03-20-2002
You need to search the math library. On my system, I would do something like:
cc prog.c -lm -o prog
to compile that program.
# 3  
Old 03-24-2002
Yes you need to add "-lm"

That is to link the math library when linking your program
Login or Register to Ask a Question

Previous Thread | Next Thread

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers


i have file (my_file.txt) that looks like this: 000000000000010000 000000000000010000 000000000000005000 000000000000005000 000000000000005000 000000000000005000 000000000000005000 000000000000005000 000000000000005000 000000000000005000 all said and one, it should look... (11 Replies)
Discussion started by: lawsongeek
11 Replies

2. UNIX for Dummies Questions & Answers

Linux Math Help

I am struggling with scripting this challenge a friend and I have. You have file1 and its contents is a single number you have file 2 and its contents are a different number you want to add file1 to file2 and have the output be put into file3 (3 Replies)
Discussion started by: minkyboodle
3 Replies

3. Programming

Math function with C

I have int miles, yards; float kilometers; float kilometers2; miles = 26; yards = 385; kilometers = 1.609 * (miles + yards / 1760.0); where int/float remains a float. How ever if I change it to kilometers = 1.609 * (miles + yards / 1760); ... (7 Replies)
Discussion started by: Fingerz
7 Replies

4. Shell Programming and Scripting

Need help with AWK math

I am trying to do some math, so that I can compare the average of six numbers to a variable. Here is what it looks like (note that when I divide really big numbers, it isn't a real number): $ tail -n 6 named.stats | awk -F\, '{print$1}' 1141804 1140566 1139429 1134210 1084682 895045... (3 Replies)
Discussion started by: brianjb
3 Replies

5. Shell Programming and Scripting

math help

$ x=1 $ y=1.5 $ z=$((x*y)) bash: 1.5: syntax error: invalid arithmetic operator (error token is ".5") What's wrong? (2 Replies)
Discussion started by: rockbike
2 Replies

6. UNIX for Dummies Questions & Answers

math in unix

I have 2 variables a=2 b=1 i want to add a and b how do i do this in unix using just the echo command and by assigning it to a different variable like c? (13 Replies)
Discussion started by: khestoi
13 Replies

7. Programming

some math problems in C

I want to calculate secant method using C language That is a program----> #include<stdio.h> #include<math.h> #include<stdlib.h> main() { double fx(double x); double x0,x1,x2,f0,f1,f2,err; int n,i; printf("\n\n f(x) =x*x*x-5*x-7"); printf("\n\nEnter an interval in" ... (4 Replies)
Discussion started by: cdfd123
4 Replies

8. Programming

something about <math.h>

Hi, I got an easy problem for you but really difficult for me 'cause I am pretty new to this field I got header file <math.h> included in my .c file , then I write the code as below: k = sqrt(i); /* both variables k and i are int */ then I cc temp.c it says like this undefined... (4 Replies)
Discussion started by: blf0
4 Replies
Login or Register to Ask a Question