1163     int isnum = 0;  in _mcplib_set_rctx_alarm()  local
1164     lua_Number secondsf = lua_tonumberx(L, arg, &isnum);  in _mcplib_set_rctx_alarm()
1165     if (!isnum) {  in _mcplib_set_rctx_alarm()
1198     int isnum = 0;  in _mcplib_rcontext_wait_prep()  local
1199     wait = lua_tointegerx(L, 2, &isnum);  in _mcplib_rcontext_wait_prep()
1200     if (!isnum || wait < 0) {  in _mcplib_rcontext_wait_prep()
1253     int isnum = 0;  in mcplib_rcontext_enqueue_and_wait()  local
1254     int handle = lua_tointegerx(L, 3, &isnum);  in mcplib_rcontext_enqueue_and_wait()
1266     if (!isnum) {  in mcplib_rcontext_enqueue_and_wait()
1290     int isnum = 0;  in mcplib_rcontext_wait_handle()  local
1291     int handle = lua_tointegerx(L, 2, &isnum);  in mcplib_rcontext_wait_handle()
1298     if (!isnum || handle < 0 || handle >= rctx->fgen->max_queues) {  in mcplib_rcontext_wait_handle()
1364     int isnum = 0;  in _mcplib_rcontext_checkhandle()  local
1365     int handle = lua_tointegerx(L, 2, &isnum);  in _mcplib_rcontext_checkhandle()
1366     if (!isnum || handle < 0 || handle >= rctx->fgen->max_queues) {  in _mcplib_rcontext_checkhandle()