1ZTPTTR(1)LAPACK routine (version 3.2) ZTPTTR(1)
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6 ZTPTTR - copies a triangular matrix A from standard packed format (TP)
7 to standard full format (TR)
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10 SUBROUTINE ZTPTTR( UPLO, N, AP, A, LDA, INFO )
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12 CHARACTER UPLO
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14 INTEGER INFO, N, LDA
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16 COMPLEX*16 A( LDA, * ), AP( * )
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19 ZTPTTR copies a triangular matrix A from standard packed format (TP) to
20 standard full format (TR).
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23 UPLO (input) CHARACTER
24 = 'U': A is upper triangular.
25 = 'L': A is lower triangular.
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27 N (input) INTEGER
28 The order of the matrix A. N >= 0.
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30 AP (input) COMPLEX*16 array, dimension ( N*(N+1)/2 ),
31 On entry, the upper or lower triangular matrix A, packed colum‐
32 nwise in a linear array. The j-th column of A is stored in the
33 array AP as follows: if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j)
34 for 1<=i<=j; if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for
35 j<=i<=n.
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37 A (output) COMPLEX*16 array, dimension ( LDA, N )
38 On exit, the triangular matrix A. If UPLO = 'U', the leading
39 N-by-N upper triangular part of A contains the upper triangular
40 part of the matrix A, and the strictly lower triangular part of
41 A is not referenced. If UPLO = 'L', the leading N-by-N lower
42 triangular part of A contains the lower triangular part of the
43 matrix A, and the strictly upper triangular part of A is not
44 referenced.
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46 LDA (input) INTEGER
47 The leading dimension of the array A. LDA >= max(1,N).
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49 INFO (output) INTEGER
50 = 0: successful exit
51 < 0: if INFO = -i, the i-th argument had an illegal value
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55 LAPACK routine (version 3.2) November 2008 ZTPTTR(1)