SLAUUM(3)

✨ NAME ✨

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/slauum.f — bestie, that’s the actual file path for this page. The page title is /home/abui...RC/slauum.f(3), and it comes from the Library Functions Manual. It’s giving very “we know exactly which Fortran file we’re talking about” energy. 💅

---

✨ SYNOPSIS ✨

Functions/Subroutines

• subroutine SLAUUM (uplo, n, a, lda, info) — SLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm). 🦋

---

🌈 Function/Subroutine Documentation 🌈

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

SLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm).

🎀 Purpose

Okay so, SLAUUM 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. 💖

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

This is the blocked form of the algorithm, calling Level 3 BLAS. 🔥

✨ Parameters

• UPLO — UPLO is CHARACTER*1. It specifies whether the triangular factor stored in the array A is upper or lower triangular:
  • = 'U': Upper triangular
  • = 'L': Lower triangular
• N — N is INTEGER. The order of the triangular factor U or L. N >= 0. 🎀
• A — A is REAL array, dimension (LDA,N). On entry, 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. 💅
• LDA — LDA is INTEGER. The leading dimension of the array A. LDA >= max(1,N). 🌸
• INFO — INFO is 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 slauum.f. 📝

---

👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code. ✨

---

That’s the whole tea, bestie: LAPACK Version 3.12.0, page /home/abui...RC/slauum.f(3). Bye and slay 💖