SRC/slauu2.f(3)

💖 NAME 💖

okay so this page is for SRC/slauu2.f, and it’s chilling in the Library Functions Manual section. It’s all about slauu2 — the unblocked algorithm that computes a triangular product and overwrites your factor in A. no cap, she’s a Level 2 BLAS girlie. ✨

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✨ SYNOPSIS ✨

🧚 Functions/Subroutines 🧚

• short description bestie: SLAUU2 computes the product UUH or LHL, where U and L are upper or lower triangular matrices (unblocked algorithm).

subroutine slauu2 (uplo, n, a, lda, info)

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🦋 Function/Subroutine Documentation 🦋

subroutine slauu2 (character uplo, integer n, real, dimension( lda, * ) a,
     integer lda, integer info)

again for the people in the back: SLAUU2 computes the product UUH or LHL, where U and L are upper or lower triangular matrices, and this is the unblocked algorithm. 💅

🎀 Purpose 🎀

SLAUU2 computes the product U * U**T or L**T * L, where the triangular factor U or L is stored in the upper or lower triangular part of the array A. periodt.

If UPLO = 'U' or 'u', then the upper triangle of the result is stored, overwriting the factor U in A. bye, old U.

If UPLO = 'L' or 'l', then the lower triangle of the result is stored, overwriting the factor L in A. bye, old L.

This is the unblocked form of the algorithm, calling Level 2 BLAS. iconic behavior, honestly. 🌈

🌸 Parameters 🌸

• UPLO — CHARACTER*1. Tells you whether the triangular factor stored in the array A is upper or lower triangular:
  • 'U': Upper triangular
  • 'L': Lower triangular
• N — INTEGER. The order of the triangular factor U or L. Must be N >= 0. respect the constraint bestie.
• A — REAL array, dimension (LDA,N). On entry, this is the triangular factor U or L. On exit, if UPLO = 'U', the upper triangle of A is overwritten with the upper triangle of the product U * U**T; if UPLO = 'L', the lower triangle of A is overwritten with the lower triangle of the product L**T * L. she is literally transformed in place. 💅
• LDA — INTEGER. The leading dimension of the array A. Must be LDA >= max(1,N). do not play with this one.
• INFO — INTEGER.
  • = 0: successful exit 🌸
  • < 0: if INFO = -k, the k-th argument had an illegal value 💀

👑 Author 👑

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

Definition at line 101 of file slauu2.f.

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🌟 Author 🌟

Generated automatically by Doxygen for LAPACK from the source code. she was built by the machine, bestie. 🤖✨

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💖 that’s the whole page, bestie — LAPACK Version 3.12.0, from SRC/slauu2.f(3). periodt. 🫶