Faster bit selection
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@ -100,8 +100,7 @@ B select_c2(B t, B w, B x) {
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for (usz i = wia; ; ) { \
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i--; \
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usz n = WRAP(wp[i], xia, thrF("⊏: Indexing out-of-bounds (%i∊𝕨, %s≡≠𝕩)", wp[i], xia)); \
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b <<= 1; \
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b |= (-(xp[n/64] & (1ull<<(n%64)))) >> 63; \
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b = 2*b + ((((u8*)xp)[n/8] >> (n%8)) & 1); \
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if (i%64 == 0) { rp[i/64]=b; if (!i) break; } \
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} \
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goto dec_ret; \
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