code wiki / _hdl_build / nx_visual_diff_gate.nx

nx_visual_diff_gate.nx

buildroot/runtime/_hdl_build/nx_visual_diff_gate.nx

4165 B90 linesdepth 9pulls 13 transitivereach 0 importersview sourcekind gate/prooftopic visual
docsdependenciesstructsconstsfunctions

about

nx_visual_diff_gate.nx -- PROOF (re-runnable, known-answer fixtures) that the visual-parity instrument measures truthfully BEFORE we point it at Chrome-vs-Nishi: identical images MUST score 1000 permille, a half-different image MUST score exactly 500, the worst-cell report must point AT the differing half, content extent must find the exact last content row, and a PNG round-trip must survive. If the ruler lies, every benchmark on top of it lies -- so the ruler gets its own gate. license_tier: ORIGINAL expect_exit: 0

dependencies 2 imports · 0 importers

nx_visual_diff.nx nx_png_write.nx nx_visual_diff_gate.nx

imports: nx_visual_diff.nxnx_png_write.nx

imported by: nobody (leaf or entry point)

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

main vg_w vg_img vd_grid_parity sys_mmap vd_cell_mean vg_n vd_content_extent nx_png_write_rgb sys_openat_wr sys_mmap ↻ sys_write pw_chunk pw_u32be sys_mmap ↻ sys_write ↻ sys_write ↻ pw_crc_block pw_adler32 sys_close vd_load sys_mmap ↻ sys_read_file sys_openat_rd sys_lseek sys_mmap ↻ sys_read sys_close ↻ nx_png_decode sys_mmap ↻ _png_check_signature _png_read_u32_be nx_crc32 nx_crc32_update nx_crc32_init nx_crc32_table_at _png_n_channels _png_bytes_per_pixel _png_n_channels ↻ _png_a7_expected

structs

none

consts

none

functions

10func vg_w(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 }
called by 1: main
11func vg_n(v: i64) -> i64 { let t: *u8=sys_mmap(24); var m: i64=v; if m<0{sys_write(1,"-" as *u8,1);m=0-m} var k: i64=0; if m==0{t[0]=48 as u8;k=1} while m>0{t[k]=(48+(m%10)) as u8;m=m/10;k=k+1} let b: *u8=sys_mmap(24); var j: i64=0; while j<k{b[j]=t[k-1-j];j=j+1} sys_write(1,b,k); return 0 }
called by 1: main
14func vg_img(w: i64, h: i64, r: i64, g: i64, b: i64) -> *VdImg
called by 1: main
30func main() -> i64