26   typedef typename NumTraits<Scalar>::Real RealScalar;  in stable_norm()  typedef
34     ibeta = std::numeric_limits<RealScalar>::radix;         // base for floating-point numbers  in stable_norm()
35 …  it    = std::numeric_limits<RealScalar>::digits;        // number of base-beta digits in mantissa  in stable_norm()
36     iemin = std::numeric_limits<RealScalar>::min_exponent;  // minimum exponent  in stable_norm()
37     iemax = std::numeric_limits<RealScalar>::max_exponent;  // maximum exponent  in stable_norm()
42     Scalar inf = std::numeric_limits<RealScalar>::infinity();  in stable_norm()
43     if(NumTraits<Scalar>::IsComplex && (numext::isnan)(inf*RealScalar(1)) )  in stable_norm()
48 … mess up complex*real product, " << inf << " * " << 1.0 << " = " << inf*RealScalar(1) << std::endl;  in stable_norm()
59   while(numext::abs2(factor)<RealScalar(1e-4))  in stable_norm()
61   Scalar big = factor * ((std::numeric_limits<RealScalar>::max)() * RealScalar(1e-4));  in stable_norm()
64   while(numext::abs2(factor)<RealScalar(1e-4))  in stable_norm()
66   Scalar small = factor * ((std::numeric_limits<RealScalar>::min)() * RealScalar(1e4));  in stable_norm()
76   VERIFY_IS_MUCH_SMALLER_THAN(vzero.norm(), static_cast<RealScalar>(1));  in stable_norm()
81   RealScalar size = static_cast<RealScalar>(m.size());  in stable_norm()
84   VERIFY(!(numext::isfinite)( std::numeric_limits<RealScalar>::infinity()));  in stable_norm()
117     v(i,j) = std::numeric_limits<RealScalar>::quiet_NaN();  in stable_norm()
128     v(i,j) = std::numeric_limits<RealScalar>::infinity();  in stable_norm()
142     v(i,j) = -std::numeric_limits<RealScalar>::infinity();  in stable_norm()
158     v(i,j) = -std::numeric_limits<RealScalar>::infinity();  in stable_norm()
159     v(i2,j2) = std::numeric_limits<RealScalar>::quiet_NaN();  in stable_norm()
173     VERIFY_IS_APPROX((vrand.stableNormalized()).norm(), RealScalar(1));  in stable_norm()
174     VERIFY_IS_APPROX(vcopy.norm(), RealScalar(1));  in stable_norm()
175     VERIFY_IS_APPROX((vbig.stableNormalized()).norm(), RealScalar(1));  in stable_norm()
176     VERIFY_IS_APPROX((vsmall.stableNormalized()).norm(), RealScalar(1));  in stable_norm()
177     RealScalar big_scaling = ((std::numeric_limits<RealScalar>::max)() * RealScalar(1e-4));  in stable_norm()