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Removes redundant function evaluation in numeric integration

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This commit is contained in:
Richard Brice
2023-09-29 11:48:26 -07:00
parent d9b534b66d
commit f9d259a3d8
1 changed files with 5 additions and 2 deletions
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src/ifcgeom/mapping/IfcCurveSegment.cpp
+5 -2
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@@ -41,13 +41,16 @@ namespace
{ {
double area = 0; double area = 0;
double h = (b - a) / n; double h = (b - a) / n;
auto x1 = a;
auto f1 = fn(x1);
for (auto i = 1; i <= n; i++) for (auto i = 1; i <= n; i++)
{ {
auto x1 = a + h * (i - 1);
auto x2 = a + h * i; auto x2 = a + h * i;
auto f1 = fn(x1);
auto f2 = fn(x2); auto f2 = fn(x2);
area += h * (f1 + f2) / 2.0; area += h * (f1 + f2) / 2.0;
x1 = x2;
f1 = f2;
} }
return area; return area;
} }