Hi All, So, we have a few choices
1. GMAT has existing C++ Pos-def. matrix inverse routines using R*R_transpose decomposition. R = Upper Triangular. GEODYN heritage. 2. GEONS C routine using U*D*U_Transpose, D=Diagonal, U=upper triangular with ones on the diagonal Boost routines will be available to GMAT programmers in about 3 months. But, I searched the Boost Linear algebra routines and couldn't find a matrix inverse routine using Cholesky. If you know of any, let me know. For now, we will use option 1 which has GEODYN heritage. If needed, we can switch to 2) later. Thanks, Steve
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