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better handling of precision errors in arcm and arb

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Zeno Rogue
2021-08-22 23:41:38 +02:00
parent 5e87f08f54
commit 6c9f7e71e1
3 changed files with 20 additions and 10 deletions
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16
hyperpoint.cpp
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@@ -1681,5 +1681,21 @@ EX bool clockwise(hyperpoint h1, hyperpoint h2) {
return h1[0] * h2[1] > h1[1] * h2[0];
}
EX ld worst_precision_error;
#if HDR
struct hr_precision_error : hr_exception { hr_precision_error() : hr_exception("precision error") {} };
#endif
/** check if a and b are the same, testing for equality. Throw an exception or warning if not sure */
EX bool same_point_may_warn(hyperpoint a, hyperpoint b) {
ld d = hdist(a, b);
if(d > 1e-2) return false;
if(d > 1e-3) throw hr_precision_error();
if(d > 1e-6 && worst_precision_error <= 1e-6)
addMessage("warning: precision errors are building up!");
if(d > worst_precision_error) worst_precision_error = d;
return true;
}
}