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---
:name: strttp
:md5sum: 952a2e28ec06b1b31c0e79c0f031dff9
:category: :subroutine
:arguments:
- uplo:
:type: char
:intent: input
- n:
:type: integer
:intent: input
- a:
:type: real
:intent: input
:dims:
- lda
- n
- lda:
:type: integer
:intent: input
- ap:
:type: real
:intent: output
:dims:
- n*(n+1)/2
- info:
:type: integer
:intent: output
:substitutions: {}
:fortran_help: " SUBROUTINE STRTTP( UPLO, N, A, LDA, AP, INFO )\n\n\
* Purpose\n\
* =======\n\
*\n\
* STRTTP copies a triangular matrix A from full format (TR) to standard\n\
* packed format (TP).\n\
*\n\n\
* Arguments\n\
* =========\n\
*\n\
* UPLO (input) CHARACTER*1\n\
* = 'U': A is upper triangular.\n\
* = 'L': A is lower triangular.\n\
*\n\
* N (input) INTEGER\n\
* The order of the matrices AP and A. N >= 0.\n\
*\n\
* A (input) REAL array, dimension (LDA,N)\n\
* On exit, the triangular matrix A. If UPLO = 'U', the leading\n\
* N-by-N upper triangular part of A contains the upper\n\
* triangular part of the matrix A, and the strictly lower\n\
* triangular part of A is not referenced. If UPLO = 'L', the\n\
* leading N-by-N lower triangular part of A contains the lower\n\
* triangular part of the matrix A, and the strictly upper\n\
* triangular part of A is not referenced.\n\
*\n\
* LDA (input) INTEGER\n\
* The leading dimension of the array A. LDA >= max(1,N).\n\
*\n\
* AP (output) REAL array, dimension (N*(N+1)/2\n\
* On exit, the upper or lower triangular matrix A, packed\n\
* columnwise in a linear array. The j-th column of A is stored\n\
* in the array AP as follows:\n\
* if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j;\n\
* if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n.\n\
*\n\
* INFO (output) INTEGER\n\
* = 0: successful exit\n\
* < 0: if INFO = -i, the i-th argument had an illegal value\n\
*\n\n\
* =====================================================================\n\
*\n"
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