| Macro | Definition |
|---|---|
| vec_dot(v1,v2) | ((v1).x*(v2).x+(v1).y*(v2).y+(v1).z*(v2).z) |
| ISZERO(a) | ((a)>-SMALL && (a)<SMALL) |
| FP_BITS(fp) | (*(DWORD *)&(fp)) |
| FP_ABS_BITS(fp) | (FP_BITS(fp)&0x7FFFFFFF) |
| FP_SIGN_BIT(fp) | (FP_BITS(fp)&0x80000000) |
| PVS_TEST(from,to) | (*(pvs + (from)*pvsrowsize + ((to)>>3)) & (1 << ((to) & 7))) |