code wiki / _hdl_build / nx_price.nx

nx_price.nx

buildroot/runtime/_hdl_build/nx_price.nx

12790 B284 linesdepth 4pulls 5 transitivereach 9 importersview sourcekind librarytopic price
docsdependenciesstructsconstsfunctions

about

nx_price.nx -- LIB: PRICE TRACKING across stores (R-PRICE, pillar 3 of seed-to-feed). Operator: "the tracking of prices but stores in the area for stores across america and how they are doing as far as prices." A sovereign price registry (knowledge/store/price-*, NO TSV, integer cents no-float): stores with an AREA, and date-stamped price OBSERVATIONS per item. "How a store is doing" = a measured competitiveness INDEX vs the area median (100 = exactly the area median; <100 = cheaper than median = better for the shopper). Finds the cheapest store / basket per area = where to buy for least (the affordability arc). HONEST: prices are RECORDED observations with a date + source (rule 23), NOT live-scraped or claimed real-time; the index is computed from those recorded numbers. Ties to [[project-nishi-food-branch-2026-06-22]] affordability. license_tier: ORIGINAL

dependencies 3 imports · 5 importers

nx_food_science.nx nx_seg_store.nx nx_syscalls.nx nx_price.nx nx_link.nx nx_price_gate.nx nx_price_hist.nx nx_rewards_gate.nx nx_swap_reward_gate.nx

imports: nx_food_science.nxnx_seg_store.nxnx_syscalls.nx

imported by: nx_link.nxnx_price_gate.nxnx_price_hist.nxnx_rewards_gate.nxnx_swap_reward_gate.nx

structs

none

consts

none

functions

15func pr_put(prefix: *u8, key: *u8, val: *u8) -> i64
called by 3: pr_list_appendpr_add_storepr_set_price calls 5: fd_streq_storess_beginss_addfd_seg_nextss_commit
26func pr_split(buf: *u8, len: i64, outtoks: *i64) -> i64
called by 2: pr_list_appendpr_area_stores calls 1: sys_mmap
49func pr_list_append(prefix: *u8, key: *u8, token: *u8) -> i64
called by 1: pr_add_store calls 6: sys_mmapss_getpr_splitfd_streqas_appendpr_put
72func pr_store_key(sid: *u8, out: *u8) -> i64 { var o: i64 = 0; o = as_append(out, o, "price:store:" as *u8); o = as_append(out, o, sid); out[o] = 0 as u8; return o }
called by 2: pr_add_storepr_store_field calls 1: as_append
73func pr_area_key(area: *u8, out: *u8) -> i64 { var o: i64 = 0; o = as_append(out, o, "price:area:" as *u8); o = as_append(out, o, area); o = as_append(out, o, ":stores" as *u8); out[o] = 0 as u8; return o }
called by 2: pr_add_storepr_area_stores calls 1: as_append
74func pr_obs_key(sid: *u8, item: *u8, out: *u8) -> i64
called by 4: pr_set_pricepr_get_pricepr_obs_fieldph_set_latest calls 1: as_append
81func pr_add_store(prefix: *u8, sid: *u8, name: *u8, chain: *u8, area: *u8, state: *u8, cite: *u8) -> i64
called by 6: mainmainmainmainmainmain calls 6: sys_mmappr_store_keyas_appendpr_putpr_area_keypr_list_append
97func pr_store_field(prefix: *u8, sid: *u8, f: i64, out: *u8) -> i64
called by 3: lk_render_itempr_render_areaph_render_trend calls 4: sys_mmappr_store_keyss_getfd_field
106func pr_set_price(prefix: *u8, sid: *u8, item: *u8, cents: i64, date: *u8, unit: *u8, source: *u8) -> i64
called by 5: mainmainmainmainmain calls 5: sys_mmappr_obs_keyfd_apnumas_appendpr_put
118func pr_get_price(prefix: *u8, sid: *u8, item: *u8) -> i64
called by 6: pr_area_pricespr_cheapestpr_basketpr_store_indexmainmain calls 5: sys_mmappr_obs_keyss_getfd_fieldfd_atoi
129func pr_obs_field(prefix: *u8, sid: *u8, item: *u8, f: i64, out: *u8) -> i64
called by 1: main calls 4: sys_mmappr_obs_keyss_getfd_field
138func pr_area_stores(prefix: *u8, area: *u8, outsids: *i64) -> i64
called by 4: pr_area_pricespr_cheapestpr_render_areamain calls 4: sys_mmappr_area_keyss_getpr_split
147func pr_area_prices(prefix: *u8, area: *u8, item: *u8, outvals: *i64) -> i64
called by 1: pr_median calls 3: sys_mmappr_area_storespr_get_price
161func pr_median(prefix: *u8, area: *u8, item: *u8) -> i64
called by 3: lk_render_itempr_store_indexmain calls 2: sys_mmappr_area_prices
181func pr_cheapest(prefix: *u8, area: *u8, item: *u8, out_sid: *u8) -> i64
called by 4: lk_render_itemlk_has_pricemainmain calls 3: sys_mmappr_area_storespr_get_price
202func pr_basket(prefix: *u8, sid: *u8, items: *i64, nitems: i64) -> i64
called by 4: pr_render_areamainmainmain calls 1: pr_get_price
215func pr_store_index(prefix: *u8, area: *u8, sid: *u8, items: *i64, nitems: i64) -> i64
called by 2: pr_render_areamain calls 2: pr_get_pricepr_median
230func pr_render_area(prefix: *u8, area: *u8, items: *i64, nitems: i64, out: *u8) -> i64
called by 1: main calls 9: sys_mmappr_area_storespr_basketas_appendas_append_escapedpr_store_field+3
275func im_money_local(dst: *u8, off: i64, cents: i64) -> i64
called by 2: pr_render_areaph_render_trend calls 1: fd_apnum