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Replace quadratic equation #353

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gfiumara opened this issue Jun 27, 2023 · 0 comments
Open

Replace quadratic equation #353

gfiumara opened this issue Jun 27, 2023 · 0 comments
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enhancement library Development interface and library WG 3 Road Map Tasks identified by ISO/IEC JTC 1/SC 37/WG 3.

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@gfiumara
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Consider changing this equation.

ISO/IEC 29794-4:2017 Equation 12 is well known to be susceptible to rounding errors, better, more stable formulations exist. The most stable method would be SVD (Singular Value Decomposition). A sufficient alternative may be the formula given under “Avoiding loss of significance” in https://en.wikipedia.org/wiki/Quadratic_equation

Source: Comment DE-068 from ISO/IEC JTC 1/SC 37/WG 3 N 1416 (Clause 5.2.2.2)
@gfiumara gfiumara added enhancement library Development interface and library WG 3 Road Map Tasks identified by ISO/IEC JTC 1/SC 37/WG 3. labels Jun 27, 2023
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