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template<typename T>
void tfttp(char *transr, char *uplo, integer *n, T *arf, T *ap, integer *info)# TFTTP copies a triangular matrix from the rectangular full
packed format (TF) to the standard packed format (TP).
Purpose:
TFTTP copies a triangular matrix A from rectangular full packed format (TF) to standard packed format (TP).
- Parameters:
TRANSR – [in]
TRANSR is CHARACTER*1
= ‘N’: ARF is in Normal format;
= ‘T’: ARF is in Transpose format;UPLO – [in]
UPLO is CHARACTER*1
= ‘U’: A is upper triangular;
= ‘L’: A is lower triangular.N – [in]
N is INTEGER
The order of the matrix A. N >= 0.
ARF – [in]
ARF is REAL array, dimension ( N*(N+1)/2),
On entry, the upper or lower triangular matrix A stored in RFP format. For a further discussion see Notes below.
AP – [out]
AP is REAL array, dimension ( N*(N+1)/2),
On exit, 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.
INFO – [out]
INFO is INTEGER
= 0: successful exit
< 0: if INFO = -i, the i-th argument had an illegal value