dtpttr - copy a triangular matrix from the standard packed format (TP) to the standard full format (TR)
SUBROUTINE DTPTTR(UPLO, N, AP, A, LDA, INFO) CHARACTER*1 UPLO INTEGER INFO, N, LDA DOUBLE PRECISION A(LDA,*), AP(*) SUBROUTINE DTPTTR_64(UPLO, N, AP, A, LDA, INFO) CHARACTER*1 UPLO INTEGER*8 INFO, N, LDA DOUBLE PRECISION A(LDA,*), AP(*) F95 INTERFACE SUBROUTINE TPTTR(UPLO, N, AP, A, LDA, INFO) INTEGER :: N, LDA, INFO CHARACTER(LEN=1) :: UPLO REAL(8), DIMENSION(:,:) :: A REAL(8), DIMENSION(:) :: AP SUBROUTINE TPTTR_64(UPLO, N, AP, A, LDA, INFO) INTEGER(8) :: N, LDA, INFO CHARACTER(LEN=1) :: UPLO REAL(8), DIMENSION(:,:) :: A REAL(8), DIMENSION(:) :: AP C INTERFACE #include <sunperf.h> void dtpttr (char uplo, int n, double *ap, double *a, int lda, int *info); void dtpttr_64 (char uplo, long n, double *ap, double *a, long lda, long *info);
Oracle Solaris Studio Performance Library dtpttr(3P) NAME dtpttr - copy a triangular matrix from the standard packed format (TP) to the standard full format (TR) SYNOPSIS SUBROUTINE DTPTTR(UPLO, N, AP, A, LDA, INFO) CHARACTER*1 UPLO INTEGER INFO, N, LDA DOUBLE PRECISION A(LDA,*), AP(*) SUBROUTINE DTPTTR_64(UPLO, N, AP, A, LDA, INFO) CHARACTER*1 UPLO INTEGER*8 INFO, N, LDA DOUBLE PRECISION A(LDA,*), AP(*) F95 INTERFACE SUBROUTINE TPTTR(UPLO, N, AP, A, LDA, INFO) INTEGER :: N, LDA, INFO CHARACTER(LEN=1) :: UPLO REAL(8), DIMENSION(:,:) :: A REAL(8), DIMENSION(:) :: AP SUBROUTINE TPTTR_64(UPLO, N, AP, A, LDA, INFO) INTEGER(8) :: N, LDA, INFO CHARACTER(LEN=1) :: UPLO REAL(8), DIMENSION(:,:) :: A REAL(8), DIMENSION(:) :: AP C INTERFACE #include <sunperf.h> void dtpttr (char uplo, int n, double *ap, double *a, int lda, int *info); void dtpttr_64 (char uplo, long n, double *ap, double *a, long lda, long *info); PURPOSE dtpttr copies a triangular matrix A from standard packed format (TP) to standard full format (TR). ARGUMENTS UPLO (input) UPLO is CHARACTER*1 = 'U': A is upper triangular. = 'L': A is lower triangular. N (input) N is INTEGER The order of the matrix A. N >= 0. AP (input) AP is DOUBLE PRECISION array, dimension ( N*(N+1)/2 ), On entry, the upper or lower triangular matrix A, packed columnwise in a linear array. The j-th column of A is stored in the array AP as follows: if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j; if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n. A (output) A is DOUBLE PRECISION array, dimension ( LDA, N ) On exit, the triangular matrix A. If UPLO = 'U', the leading N-by-N upper triangular part of A contains the upper triangu- lar part of the matrix A, and the strictly lower triangular part of A is not referenced. If UPLO = 'L', the leading N- by-N lower triangular part of A contains the lower triangular part of the matrix A, and the strictly upper triangular part of A is not referenced. LDA (input) LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N). INFO (output) INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value 7 Nov 2015 dtpttr(3P)