--- 
:name: stfttr
:md5sum: df86973ab0132ff43480f353386b9f62
:category: :subroutine
:arguments: 
- transr: 
    :type: char
    :intent: input
- uplo: 
    :type: char
    :intent: input
- n: 
    :type: integer
    :intent: input
- arf: 
    :type: real
    :intent: input
    :dims: 
    - ldarf
- a: 
    :type: real
    :intent: output
    :dims: 
    - lda
    - n
- lda: 
    :type: integer
    :intent: input
- info: 
    :type: integer
    :intent: output
:substitutions: 
  lda: MAX(1,n)
  n: ((int)sqrtf(ldarf*8+1.0f)-1)/2
:fortran_help: "      SUBROUTINE STFTTR( TRANSR, UPLO, N, ARF, A, LDA, INFO )\n\n\
  *  Purpose\n\
  *  =======\n\
  *\n\
  *  STFTTR copies a triangular matrix A from rectangular full packed\n\
  *  format (TF) to standard full format (TR).\n\
  *\n\n\
  *  Arguments\n\
  *  =========\n\
  *\n\
  *  TRANSR   (input) CHARACTER*1\n\
  *          = 'N':  ARF is in Normal format;\n\
  *          = 'T':  ARF is in Transpose format.\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 ARF and A. N >= 0.\n\
  *\n\
  *  ARF     (input) REAL array, dimension (N*(N+1)/2).\n\
  *          On entry, the upper (if UPLO = 'U') or lower (if UPLO = 'L')\n\
  *          matrix A in RFP format. See the \"Notes\" below for more\n\
  *          details.\n\
  *\n\
  *  A       (output) REAL array, dimension (LDA,N)\n\
  *          On exit, the triangular matrix A.  If UPLO = 'U', the\n\
  *          leading N-by-N upper triangular part of the array A contains\n\
  *          the upper triangular matrix, 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 the array A contains\n\
  *          the lower triangular matrix, 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\
  *  INFO    (output) INTEGER\n\
  *          = 0:  successful exit\n\
  *          < 0:  if INFO = -i, the i-th argument had an illegal value\n\
  *\n\n\
  *  Further Details\n\
  *  ===============\n\
  *\n\
  *  We first consider Rectangular Full Packed (RFP) Format when N is\n\
  *  even. We give an example where N = 6.\n\
  *\n\
  *      AP is Upper             AP is Lower\n\
  *\n\
  *   00 01 02 03 04 05       00\n\
  *      11 12 13 14 15       10 11\n\
  *         22 23 24 25       20 21 22\n\
  *            33 34 35       30 31 32 33\n\
  *               44 45       40 41 42 43 44\n\
  *                  55       50 51 52 53 54 55\n\
  *\n\
  *\n\
  *  Let TRANSR = 'N'. RFP holds AP as follows:\n\
  *  For UPLO = 'U' the upper trapezoid A(0:5,0:2) consists of the last\n\
  *  three columns of AP upper. The lower triangle A(4:6,0:2) consists of\n\
  *  the transpose of the first three columns of AP upper.\n\
  *  For UPLO = 'L' the lower trapezoid A(1:6,0:2) consists of the first\n\
  *  three columns of AP lower. The upper triangle A(0:2,0:2) consists of\n\
  *  the transpose of the last three columns of AP lower.\n\
  *  This covers the case N even and TRANSR = 'N'.\n\
  *\n\
  *         RFP A                   RFP A\n\
  *\n\
  *        03 04 05                33 43 53\n\
  *        13 14 15                00 44 54\n\
  *        23 24 25                10 11 55\n\
  *        33 34 35                20 21 22\n\
  *        00 44 45                30 31 32\n\
  *        01 11 55                40 41 42\n\
  *        02 12 22                50 51 52\n\
  *\n\
  *  Now let TRANSR = 'T'. RFP A in both UPLO cases is just the\n\
  *  transpose of RFP A above. One therefore gets:\n\
  *\n\
  *\n\
  *           RFP A                   RFP A\n\
  *\n\
  *     03 13 23 33 00 01 02    33 00 10 20 30 40 50\n\
  *     04 14 24 34 44 11 12    43 44 11 21 31 41 51\n\
  *     05 15 25 35 45 55 22    53 54 55 22 32 42 52\n\
  *\n\
  *\n\
  *  We then consider Rectangular Full Packed (RFP) Format when N is\n\
  *  odd. We give an example where N = 5.\n\
  *\n\
  *     AP is Upper                 AP is Lower\n\
  *\n\
  *   00 01 02 03 04              00\n\
  *      11 12 13 14              10 11\n\
  *         22 23 24              20 21 22\n\
  *            33 34              30 31 32 33\n\
  *               44              40 41 42 43 44\n\
  *\n\
  *\n\
  *  Let TRANSR = 'N'. RFP holds AP as follows:\n\
  *  For UPLO = 'U' the upper trapezoid A(0:4,0:2) consists of the last\n\
  *  three columns of AP upper. The lower triangle A(3:4,0:1) consists of\n\
  *  the transpose of the first two columns of AP upper.\n\
  *  For UPLO = 'L' the lower trapezoid A(0:4,0:2) consists of the first\n\
  *  three columns of AP lower. The upper triangle A(0:1,1:2) consists of\n\
  *  the transpose of the last two columns of AP lower.\n\
  *  This covers the case N odd and TRANSR = 'N'.\n\
  *\n\
  *         RFP A                   RFP A\n\
  *\n\
  *        02 03 04                00 33 43\n\
  *        12 13 14                10 11 44\n\
  *        22 23 24                20 21 22\n\
  *        00 33 34                30 31 32\n\
  *        01 11 44                40 41 42\n\
  *\n\
  *  Now let TRANSR = 'T'. RFP A in both UPLO cases is just the\n\
  *  transpose of RFP A above. One therefore gets:\n\
  *\n\
  *           RFP A                   RFP A\n\
  *\n\
  *     02 12 22 00 01             00 10 20 30 40 50\n\
  *     03 13 23 33 11             33 11 21 31 41 51\n\
  *     04 14 24 34 44             43 44 22 32 42 52\n\
  *\n\
  *  Reference\n\
  *  =========\n\
  *\n\
  *  =====================================================================\n\
  *\n\
  *     ..\n\
  *     .. Local Scalars ..\n      LOGICAL            LOWER, NISODD, NORMALTRANSR\n      INTEGER            N1, N2, K, NT, NX2, NP1X2\n      INTEGER            I, J, L, IJ\n\
  *     ..\n\
  *     .. External Functions ..\n      LOGICAL            LSAME\n      EXTERNAL           LSAME\n\
  *     ..\n\
  *     .. External Subroutines ..\n      EXTERNAL           XERBLA\n\
  *     ..\n\
  *     .. Intrinsic Functions ..\n      INTRINSIC          MAX, MOD\n\
  *     ..\n"
