Error Undefined Reference To Sqrt In C
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C Programming Undefined Reference To Sqrt
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Undefined Reference To Pow
vote favorite 8 I have this simple code: max = (int) sqrt (number); and in the header I have: #include
Undefined Reference To Sqrt Collect2 Ld Returned 1 Exit Status
You need #include
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Undefined Reference To Sqrt Makefile
with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack bash ./a.out no such file or directory Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up C - undefined reference to “sqrt” even with '-lm' up vote 8 http://stackoverflow.com/questions/5248919/c-undefined-reference-to-sqrt-or-other-mathematical-functions down vote favorite I try to compile a library in C that need "math.h", here is the begining of the .c file: #include
Programming Boards C Programming undefined reference to `sqrt' when using math.h Getting started with C or C++ | C Tutorial | C++ Tutorial | http://cboard.cprogramming.com/c-programming/101188-undefined-reference-%60sqrt-when-using-math-h.html C and C++ FAQ | Get a compiler | Fixes for common problems Thread: undefined reference to `sqrt' when using math.h Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… https://groups.google.com/d/topic/gnu.gcc.help/U-BCUb_ucB0 Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 03-31-2008 #1 Milhas View Profile View Forum Posts Banned Join Date Mar 2008 Posts 78 undefined reference to `sqrt' when using undefined reference math.h Just like the title says.. 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 *) NULL); Join Date Jul 2003 Location Banks of the River Styx Posts 902 "undefined reference" is a linker error - meaning that you didn't link with the code for undefined reference to the function it's complaining about. (Most of the times, #including something will not fix this) For sqrt(), add -lm to your linker flags. long time; /* know C? */ Unprecedented performance: Nothing ever ran this slow before. Any sufficiently advanced bug is indistinguishable from a feature. Real Programmers confuse Halloween and Christmas, because dec 25 == oct 31. The best way to accelerate an IBM is at 9.8 m/s/s. recursion (re - cur' - zhun) n. 1. (see recursion) 03-31-2008 #3 Milhas View Profile View Forum Posts Banned Join Date Mar 2008 Posts 78 Originally Posted by Cactus_Hugger "undefined reference" is a linker error - meaning that you didn't link with the code for the function it's complaining about. (Most of the times, #including something will not fix this) For sqrt(), add -lm to your linker flags. What is a linker flags? I'm using gcc how should i do it? 03-31-2008 #4 Cactus_Hugger View Profile View Forum Posts int x = *((int *) NULL); Join Date Jul 2003 Location Banks of the River Styx Posts 902 Example: Code: $ gcc -c -o main.o main.c $ gcc -c -o second.o second.c $ gcc -o myprog
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