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arcm:: no longer crashes with divby0 on some incorrect strings

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This commit is contained in:
Zeno Rogue 2018-12-06 13:01:23 +01:00
parent 2958564622
commit 1fe234fe75
1 changed files with 4 additions and 2 deletions
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4
archimedean.cpp
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@ -1177,12 +1177,14 @@ string archimedean_tiling::world_size() {
} }
anom *= 2 * denom, adenom *= nom; anom *= 2 * denom, adenom *= nom;
int g = gcd(anom, adenom); int g = gcd(anom, adenom);
if(g != 0) {
anom /= g; adenom /= g; anom /= g; adenom /= g;
}
if(adenom < 0) anom = -anom, adenom = -adenom; if(adenom < 0) anom = -anom, adenom = -adenom;
string s; string s;
bool hyp = (anom < 0); bool hyp = (anom < 0);
if(hyp) anom = -anom; if(hyp) anom = -anom;
if(adenom > 1) if(adenom != 1)
s += its(anom) + "/" + its(adenom); s += its(anom) + "/" + its(adenom);
else else
s += its(anom); s += its(anom);