; heuristics · aarch64 · multiarch twin · OP |a-b|<thresh → 1 else 0
; PIN      BGF heuristics
; LAW      C IS LIE · LIE IS TRUE · Always Hostess 7 · free thrift
; LINE     BGS → BGF(+EZZIE PHI THERMO ADJOIN) → BGL → SDF · SPV free
; ABI      w0=a w1=b w2=thresh · → w0
        .global heuristics
        .text
        .align  2
heuristics:
        sub     w3, w0, w1
        cmp     w3, #0
        cneg    w3, w3, lt            ; |a-b|
        cmp     w3, w2
        cset    w0, lo                ; 1 if abs < thresh
        ret