STRTTP(3)

💖 NAME 💖

okay bestie, this page is for STRTTP(3) from the Library Functions Manual, and its source file is:

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/strttp.f

That’s the whole NAME vibe. Slay. 💅

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✨ SYNOPSIS ✨

🦋 Functions/Subroutines

subroutine STRTTP (uplo, n, a, lda, ap, info)

STRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP). no cap, that’s literally the whole job. 🎀

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📚 Function/Subroutine Documentation 📚

subroutine STRTTP (character uplo, integer n, real, dimension( lda, * ) a,
    integer lda, real, dimension( * ) ap, integer info)

STRTTP copies a triangular matrix from the standard full format (TR) to the standard packed format (TP). iconic behavior fr fr. 🌟

🎯 Purpose

STRTTP copies a triangular matrix A from full format (TR) to standard packed format (TP).

🌸 Parameters

💜 UPLO

UPLO is CHARACTER*1.

• = 'U': A is upper triangular.
• = 'L': A is lower triangular.

💜 N

N is INTEGER.

The order of the matrices AP and A. N >= 0.

💜 A

A is REAL 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 triangular 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

LDA is INTEGER.

The leading dimension of the array A. LDA >= max(1,N).

💜 AP

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

INFO is INTEGER.

• = 0: successful exit
• < 0: if INFO = -i, the i-th argument had an illegal value

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👑 Author 👑

the academic icons behind this one:

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

Definition at line 103 of file strttp.f.

👑 Author (auto-generated) 👑

Generated automatically by Doxygen for LAPACK from the source code.

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💖 that’s the whole page, bestie! LAPACK Version 3.12.0, /home/abui...RC/strttp.f(3) — signed, sealed, and auto-generated. 🫶✨