From 8c8d2f518968ce7057eec6aa5cd5aec8faab861a Mon Sep 17 00:00:00 2001 From: jofret Date: Tue, 28 Apr 2009 07:17:00 +0000 Subject: Moving lapack to right place --- src/lib/lapack/dgesv.f | 107 ------------------------------------------------- 1 file changed, 107 deletions(-) delete mode 100644 src/lib/lapack/dgesv.f (limited to 'src/lib/lapack/dgesv.f') diff --git a/src/lib/lapack/dgesv.f b/src/lib/lapack/dgesv.f deleted file mode 100644 index 220ef56f..00000000 --- a/src/lib/lapack/dgesv.f +++ /dev/null @@ -1,107 +0,0 @@ - SUBROUTINE DGESV( N, NRHS, A, LDA, IPIV, B, LDB, INFO ) -* -* -- LAPACK driver routine (version 3.1) -- -* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. -* November 2006 -* -* .. Scalar Arguments .. - INTEGER INFO, LDA, LDB, N, NRHS -* .. -* .. Array Arguments .. - INTEGER IPIV( * ) - DOUBLE PRECISION A( LDA, * ), B( LDB, * ) -* .. -* -* Purpose -* ======= -* -* DGESV computes the solution to a real system of linear equations -* A * X = B, -* where A is an N-by-N matrix and X and B are N-by-NRHS matrices. -* -* The LU decomposition with partial pivoting and row interchanges is -* used to factor A as -* A = P * L * U, -* where P is a permutation matrix, L is unit lower triangular, and U is -* upper triangular. The factored form of A is then used to solve the -* system of equations A * X = B. -* -* Arguments -* ========= -* -* N (input) INTEGER -* The number of linear equations, i.e., the order of the -* matrix A. N >= 0. -* -* NRHS (input) INTEGER -* The number of right hand sides, i.e., the number of columns -* of the matrix B. NRHS >= 0. -* -* A (input/output) DOUBLE PRECISION array, dimension (LDA,N) -* On entry, the N-by-N coefficient matrix A. -* On exit, the factors L and U from the factorization -* A = P*L*U; the unit diagonal elements of L are not stored. -* -* LDA (input) INTEGER -* The leading dimension of the array A. LDA >= max(1,N). -* -* IPIV (output) INTEGER array, dimension (N) -* The pivot indices that define the permutation matrix P; -* row i of the matrix was interchanged with row IPIV(i). -* -* B (input/output) DOUBLE PRECISION array, dimension (LDB,NRHS) -* On entry, the N-by-NRHS matrix of right hand side matrix B. -* On exit, if INFO = 0, the N-by-NRHS solution matrix X. -* -* LDB (input) INTEGER -* The leading dimension of the array B. LDB >= max(1,N). -* -* INFO (output) INTEGER -* = 0: successful exit -* < 0: if INFO = -i, the i-th argument had an illegal value -* > 0: if INFO = i, U(i,i) is exactly zero. The factorization -* has been completed, but the factor U is exactly -* singular, so the solution could not be computed. -* -* ===================================================================== -* -* .. External Subroutines .. - EXTERNAL DGETRF, DGETRS, XERBLA -* .. -* .. Intrinsic Functions .. - INTRINSIC MAX -* .. -* .. Executable Statements .. -* -* Test the input parameters. -* - INFO = 0 - IF( N.LT.0 ) THEN - INFO = -1 - ELSE IF( NRHS.LT.0 ) THEN - INFO = -2 - ELSE IF( LDA.LT.MAX( 1, N ) ) THEN - INFO = -4 - ELSE IF( LDB.LT.MAX( 1, N ) ) THEN - INFO = -7 - END IF - IF( INFO.NE.0 ) THEN - CALL XERBLA( 'DGESV ', -INFO ) - RETURN - END IF -* -* Compute the LU factorization of A. -* - CALL DGETRF( N, N, A, LDA, IPIV, INFO ) - IF( INFO.EQ.0 ) THEN -* -* Solve the system A*X = B, overwriting B with X. -* - CALL DGETRS( 'No transpose', N, NRHS, A, LDA, IPIV, B, LDB, - $ INFO ) - END IF - RETURN -* -* End of DGESV -* - END -- cgit