A FORTRAN SUBROUTINE REQUIRING ONLY n(n+1)/2 MATRIX LOCATIONS TO INVERT, SOLVE, AND FIND THE DETERMINANT OF A REAL SYMMETRIC MATRIX.
Abstract
A Fortran subroutine, F1-ANL-SYMINV, written at Argonne National Laboratory, that solves, inverts, and finds the determinant of symmetric real matrices has been modified. The original subroutine uses only the upper triangular portion of the matrix; however, it requires that the entire matrix be input to the subroutine. The modified version, F1-NRL-SYMINV, requires that only the upper triangular portion of the matrix be input to the subroutine, thereby reducing the matrix storage requirements from n squared locations to n(n+1)/2 locations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1969
- Accession Number
- AD0690865
Entities
People
- Janet P. Mason
Organizations
- United States Naval Research Laboratory