Home > Undefined Reference > Undefined Reference To Sqrt Ubuntu

Undefined Reference To Sqrt Ubuntu

Contents

P: n/a John I'm trying to use the sqrt() function in Linux with GCC v3.3.6, compiling with this command: $ gcc sourcefile.c I get this error: In function 'main': undefined reference However, the location might vary from machine to machine. $ whereis libm.so libm: /usr/lib/libm.so /usr/lib/libm.a In option -lm, ‘l‘ points to prefix ‘lib' and ‘m‘ for math. Not the answer you're looking for? Join them; it only takes a minute: Sign up C - undefined reference to sqrt (or other mathematical functions) up vote 30 down vote favorite 8 I have this simple code: this contact form

Please login at www.codechef.com to post your questions! × questionstagsusersbadgesunanswered ask a question about faq CodeChef Discussion questions tags users Math.h in gcc,undefined reference to sqrt---GCD Queries 0 I am using How to use sqrt() function with gcc? sqrt function in cmath library differences between a c-function and a class method Assigning std::sqrt to function pointer Browse more C / C++ Questions on Bytes Question stats viewed: 36402 replies: I get undefined reference to `sqrt' error and i included math.h Using GCC by the way, in linux. 03-31-2008 #2 Cactus_Hugger View Profile View Forum Posts int x = *((int *) http://stackoverflow.com/questions/10409032/why-am-i-getting-undefined-reference-to-sqrt-error-even-though-i-include-math

Undefined Reference To Sqrt Ubuntu

Any sufficiently advanced bug is indistinguishable from a feature. function without arithematic operator C function overloading? It's not the library problem.

  1. Enable Wireless on Fresh Debian Build What to do when majority of the students do not bother to do peer grading assignment?
  2. It resides in the library libm.
  3. Search Engine Optimisation provided by DragonByte SEO v2.0.32 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
  4. share|improve this answer answered Jul 1 '15 at 1:42 o11c 6,26911442 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign
  5. SYNOPSIS #include double sqrt(double x); Link with -lm.
  6. Therefore, we must do this.
  7. Adv Reply July 12th, 2011 #2 JupiterV2 View Profile View Forum Posts Private Message Tea Glorious Tea!

Why was Susan treated so unkindly? So, the command: linker sparse_matrix.o -lm ... What could be the problem? - Surya The detailed error message: $ mpicc -o mpi-pi pi.c /tmp/ccwuQwDw.o: In function `main': pi.c:(.text+0x15f): undefined reference to `sqrt' collect2: ld returned 1 exit status How To Include Math.h In Gcc Origin of “can” in the sense of ‘jail’ Separate namespaces for functions and variables in POSIX shells more hot questions question feed lang-c about us tour help blog chat data legal

Failing that, you'll need to show us your code, your compile command and the platform you're running on (operating system, compiler, etc). Undefined Reference To Sqrt' Eclipse recursion (re - cur' - zhun) n. 1. (see recursion) 03-31-2008 #5 Milhas View Profile View Forum Posts Banned Join Date Mar 2008 Posts 78 Thanks! up vote 35 down vote favorite 12 I'm very new to C and I have this code: #include #include int main(void) { double x = 0.5; double result = More Help more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

How to select citizen justices? Gcc Test.c -o Test -lm So, for example, given the commands: gcc -o plugh plugh.o -lxyzzy gcc -o plugh -lxyzzy plugh.o and plugh.o requires something from the xyzzy library, the second may not work as you The following code compiles and links fine: #include int main (void) { int max = sqrt (9); return 0; } Just be aware that some compilation systems depend on the This also seems to be gcc version dependent (some older versions didn't mind as much). –Kevin Bullaughey Jul 10 '15 at 2:50 | show 2 more comments up vote 14 down

Undefined Reference To Sqrt' Eclipse

How much more than my mortgage should I charge for rent? http://cboard.cprogramming.com/c-programming/101188-undefined-reference-%60sqrt-when-using-math-h.html more hot questions question feed lang-c about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Undefined Reference To Sqrt Ubuntu What are the German equivalents of “First World War”, “World War I”, and “WWI”? Undefined Reference To Sqrt Makefile Forum Today's Posts C and C++ FAQ Forum Actions Mark Forums Read Quick Links View Forum Leaders What's New?

In that case, the linker should not be called at all. weblink share|improve this answer edited May 2 '12 at 8:12 answered May 2 '12 at 6:55 wallyk 42.2k949100 add a comment| up vote 5 down vote You need to link the with Why does removing Iceweasel nuke GNOME? Similar topics The problem with square and sqrt function Function prototypes pow() works but sqrt() not!? Bash ./a.out No Such File Or Directory

c linker libm share|improve this question edited Dec 13 '14 at 17:11 Jonathan Leffler 442k62514825 asked May 2 '12 at 6:53 Ant's 5,0081063117 And here is some speculation why It's quick & easy. Is there something special I need to do to use the math.h functions? navigate here And, by "leaving off", I also include the possibility of "misplacing".

You won't get that error from that command line. Sqrt In C Without Using Sqrt Function Why were Navajo code talkers used during WW2? current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.

Join Date Sep 2006 Location BC, Canada Beans 347 DistroUbuntu 10.10 Maverick Meerkat Re: gcc: undefined reference to `sqrt' even if I included math.h You need to link the math library.

asked 4 years ago viewed 84424 times active 7 months ago Linked 0 Compilation error with c 0 gcc wont find sqrt even with -lm parameter 169 Why do you have more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed How to create a custom theme in SXA? Undefined Reference To `sqrtf' How to draw a clock-diagram?

How do I handle an unterminated wire behind my wall? How do I handle an unterminated wire behind my wall? Is there a word for "timeless" that doesn't imply the passage of time? http://fullflash.net/undefined-reference/undefined-reference-error-in-c.html Are assignments in the condition part of conditionals a bad practice?

How strange is it (as an undergrad) to email a professor from another institution about possibly working in their lab? share|improve this answer edited Apr 1 '13 at 12:39 answered Apr 1 '13 at 12:29 Arun 9,94342747 Then why is that the program getting compiled and linked if a Sorry for this rather simple mistake. I just tried with my main program which use this library and (now that I understand that) it work fine (just added '-lm' NOT at the compilation time of the library

What are the large round dark "holes" in this NASA Hubble image of the Crab Nebula? Add the -lm switch to specify that you want to link against the standard C math library (libm) which has the definition for those functions (the header just has the declaration h functions are “undefined references” in Ubuntu0undefined reference to sqrt(geany)3It's really strange that sometimes gcc can't find reference of sqrt but sometimes gcc can0Why am I getting the error, “undefined reference Output a googol copies of a string Enable Wireless on Fresh Debian Build Why is the FBI making such a big deal out Hillary Clinton's private email server?

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Results 1 to 3 of 3 Thread: gcc: undefined reference to `sqrt' even if I included math.h Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to How do I handle an unterminated wire behind my wall? What are the German equivalents of “First World War”, “World War I”, and “WWI”?

Current Project: Vocab Builder Blog: http://noeffclue.blogspot.com Adv Reply July 12th, 2011 #3 dwhitney67 View Profile View Forum Posts Private Message Tolerant of Ubuntu Join Date Jun 2007 Location Maryland, US