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arcm:: no longer crashes with divby0 on some incorrect strings
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@ -1177,12 +1177,14 @@ string archimedean_tiling::world_size() {
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}
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anom *= 2 * denom, adenom *= nom;
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int g = gcd(anom, adenom);
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anom /= g; adenom /= g;
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if(g != 0) {
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anom /= g; adenom /= g;
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}
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if(adenom < 0) anom = -anom, adenom = -adenom;
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string s;
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bool hyp = (anom < 0);
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if(hyp) anom = -anom;
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if(adenom > 1)
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if(adenom != 1)
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s += its(anom) + "/" + its(adenom);
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else
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s += its(anom);
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