Lines Matching refs:nv_isnull
197 return((np = nv_opensub(np)) && !nv_isnull(np));
593 if(!nv_isnull(np))
669 if(nv_isnull(np) && nv_isattr(np,NV_NOFREE))
680 if(mp && nv_isnull(mp))
693 else if(nv_isattr(np,NV_INTEGER) && !nv_isnull(np))
813 if(nv_isnull(np) && nv_isattr(np,NV_NOFREE))
1262 if(!shp->instance && nv_isnull(ap->cur))
1281 if(sh.subshell && (mp=nv_search(sp,ap->header.table,0)) && nv_isnull(mp))
1283 if((mp || (mp=nv_search(sp,ap->header.table,mode))) && nv_isnull(mp) && (mode&NV_ADD))
1293 if(nv_isnull(mp))
1346 else if(!nv_isnull(np))