Date: Wed, 7 Sep 1994 10:28:20 -0500 (CDT)
From: "Troy D. VanHorn" <tvanhorn AT ozarks DOT sgcl DOT lib DOT mo DOT us>
Subject: Re: Missing rint()?
To: Bob Hood <rbh AT evolving DOT com>
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu


It sounds like you are not linking the math library in.

Try this:   GCC prog.c -o prog -lm

The -lm tells gcc to link libm.a which contains the math functions found 
in <math.h>.

Troy...