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Fix flaky array_cwise and sparse_basic tests

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libeigen/eigen!2227

Co-authored-by: Rasmus Munk Larsen <rmlarsen@gmail.com>
This commit is contained in:
Rasmus Munk Larsen
2026-02-27 21:52:46 -08:00
parent 25dba492e3
commit eddb470a09
2 changed files with 43 additions and 23 deletions
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7
test/array_cwise.cpp
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@@ -941,8 +941,11 @@ void array_complex(const ArrayType& m) {
ArrayType m1 = ArrayType::Random(rows, cols), m2(rows, cols), m4 = m1;
m4.real() = (m4.real().abs() == RealScalar(0)).select(RealScalar(1), m4.real());
m4.imag() = (m4.imag().abs() == RealScalar(0)).select(RealScalar(1), m4.imag());
// Clamp m4 so that |m4| >= min_normal, avoiding overflow in inverse(m4).
// For complex z = a+bi, 1/z = (a-bi)/(a²+b²); if a²+b² underflows to zero
// (both |a| and |b| below sqrt(min_normal)), the inverse overflows to inf/nan.
const RealScalar min = (std::numeric_limits<RealScalar>::min)();
m4 = (m4.abs() < min).select(Scalar(1), m4);
Array<RealScalar, -1, -1> m3(rows, cols);