1*3d8817e4Smiod #ifndef hertz_h 2*3d8817e4Smiod #define hertz_h 3*3d8817e4Smiod 4*3d8817e4Smiod #define HZ_WRONG 0 /* impossible clock frequency */ 5*3d8817e4Smiod 6*3d8817e4Smiod /* 7*3d8817e4Smiod * Discover the tick frequency of the machine if something goes wrong, 8*3d8817e4Smiod * we return HZ_WRONG, an impossible sampling frequency. 9*3d8817e4Smiod */ 10*3d8817e4Smiod 11*3d8817e4Smiod extern int hertz (void); 12*3d8817e4Smiod 13*3d8817e4Smiod #endif /* hertz_h */ 14