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Old 06-24-2004, 02:03 AM   #1
Registered: May 2004
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gcc and math.h

i have written a c program in which i invoked cos(x). I compiled it with gcc but failed.
i have tried it with both math.h and tgmath.h but it didn't compile.
I think i have to use some option of gcc.
plz tell me which i the option i have to use.
Old 06-24-2004, 02:40 AM   #2
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Registered: Jan 2003
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The math routines are kept in an external library. If you use any functions included in math.h, then you need to tell gcc to explicitly use that external library.

For example, if your program was named: my_prog.c

Compile it with: gcc -o my_prog -lm my_prog.c

The math library is named libm. You tell gcc to use it with the -lm (lowercase L).
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Old 06-24-2004, 03:35 AM   #3
Registered: May 2004
Posts: 67

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It works!!
thank u very much for ur help.


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