1*8462SApril.Chin@Sun.COMif tst -D_ISOC99_SOURCE -lm note{ _ISOC99_SOURCE plays nice }end link{ 2*8462SApril.Chin@Sun.COM #include <sys/types.h> 3*8462SApril.Chin@Sun.COM #include <sys/stat.h> 4*8462SApril.Chin@Sun.COM #include <stdlib.h> 5*8462SApril.Chin@Sun.COM #include <unistd.h> 6*8462SApril.Chin@Sun.COM #include <math.h> 7*8462SApril.Chin@Sun.COM int main() { return signbit(-0.0); } 8*8462SApril.Chin@Sun.COM }end { 9*8462SApril.Chin@Sun.COM #ifndef _ISOC99_SOURCE 10*8462SApril.Chin@Sun.COM #define _ISOC99_SOURCE 1 11*8462SApril.Chin@Sun.COM #endif 12*8462SApril.Chin@Sun.COM } 13*8462SApril.Chin@Sun.COMendif 14