7c2fbfb345896881c631598ee3852ce9ce33fb07April Chinif tst -D_ISOC99_SOURCE -lm note{ _ISOC99_SOURCE plays nice }end link{

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin #include <sys/types.h>

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin #include <sys/stat.h>

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin #include <stdlib.h>

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin #include <unistd.h>

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin #include <math.h>

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin int main() { return signbit(-0.0); }

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin }end {

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin #ifndef _ISOC99_SOURCE

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin #define _ISOC99_SOURCE 1

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin #endif

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin }

7c2fbfb345896881c631598ee3852ce9ce33fb07April Chinendif