/*?foo.c?--?trivial?test?library
???Copyright?（C）?1998-1999?Free?Software?Foundation?Inc.
???Originally?by?Thomas?Tanner?
???This?file?is?part?of?GNU?Libtool.

This?program?is?free?software;?you?can?redistribute?it?and/or?modify
it?under?the?terms?of?the?GNU?General?Public?License?as?published?by
the?Free?Software?Foundation;?either?version?2?of?the?License?or
（at?your?option）?any?later?version.

This?program?is?distributed?in?the?hope?that?it?will?be?useful
but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the
GNU?General?Public?License?for?more?details.

You?should?have?received?a?copy?of?the?GNU?General?Public?License
along?with?this?program;?if?not?write?to?the?Free?Software
Foundation?Inc.?59?Temple?Place?Suite?330?Boston?MA??02111-1307
USA.?*/

#include?“foo.h“
#include?

#ifdef?HAVE_MATH_H
#include?
#endif

int
foo（）
{
??printf?（“cos?（0.0）?=?%g\n“?（double）?cos?（（double）?0.0））;
??return?FOO_RET;
}

int
hello（）
{
??printf?（“**?This?is?libfoo?**\n“）;
??return?HELLO_RET;
}