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60 static inline void Eigenvalues_Sym3x3(PetscReal a11, PetscReal a12, PetscReal a13, PetscReal a22, P… in Eigenvalues_Sym3x3() argument65 PetscReal delta = PetscSqr(a11 - a22) + 4 * a12_2; in Eigenvalues_Sym3x3()66 PetscReal b = -(a11 + a22); in Eigenvalues_Sym3x3()67 PetscReal c = a11 * a22 - a12_2; in Eigenvalues_Sym3x3()74 const PetscReal I1 = a11 + a22 + a33; in Eigenvalues_Sym3x3()75 …const PetscReal J2 = (PetscSqr(a11 - a22) + PetscSqr(a22 - a33) + PetscSqr(a33 - a11)) / 6 + Pets… in Eigenvalues_Sym3x3()82 const PetscReal S[] = {a11 - I1 / 3, a12, a13, a22 - I1 / 3, a23, a33 - I1 / 3}; in Eigenvalues_Sym3x3()