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Use std::fpclassify for double==0 tests

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Roy Stogner
2022-03-16 08:35:34 -05:00
parent 19ec7c78a1
commit 30279f701c
1 changed files with 2 additions and 1 deletions
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poly2tri/common/utils.h
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@@ -71,7 +71,8 @@ Orientation Orient2d(const Point& pa, const Point& pb, const Point& pc)
// Using a tolerance here fails on concave-by-subepsilon boundaries // Using a tolerance here fails on concave-by-subepsilon boundaries
// if (val > -EPSILON && val < EPSILON) { // if (val > -EPSILON && val < EPSILON) {
if (val == 0) { // Using == on double makes -Wfloat-equal warnings yell at us
if (std::fpclassify(val) == FP_ZERO) {
return COLLINEAR; return COLLINEAR;
} else if (val > 0) { } else if (val > 0) {
return CCW; return CCW;