TESTING/LIN/claipd.f(3)

🎀 NAME 🎀

Okay so this page is TESTING/LIN/claipd.f, and it’s from the Library Functions Manual. That’s the name-section tea, bestie. ✨

📜 SYNOPSIS 📜

✨ Functions/Subroutines ✨

• subroutine claipd (n, a, inda, vinda) — CLAIPD

subroutine claipd (n, a, inda, vinda)
    CLAIPD

🦋 Function/Subroutine Documentation 🦋

subroutine claipd (integer n, complex, dimension( * ) a, integer inda,
    integer vinda)

CLAIPD

🎯 Purpose 🎯

CLAIPD sets the imaginary part of the diagonal elements of a complex matrix A to a large value. This is used to test LAPACK routines for complex Hermitian matrices, which are not supposed to access or use the imaginary parts of the diagonals. 💅

🧸 Parameters 🧸

N

N is INTEGER. The number of diagonal elements of A.

A

A is COMPLEX array, dimension (1+(N-1)*INDA+(N-2)*VINDA).

On entry, the complex (Hermitian) matrix A.

On exit, the imaginary parts of the diagonal elements are set to BIGNUM = EPS / SAFMIN, where EPS is the machine epsilon and SAFMIN is the safe minimum.

INDA

INDA is INTEGER. The increment between A(1) and the next diagonal element of A.

Typical values are:

• = LDA+1: square matrices with leading dimension LDA
• = 2: packed upper triangular matrix, starting at A(1,1)
• = N: packed lower triangular matrix, starting at A(1,1)

VINDA

VINDA is INTEGER. The change in the diagonal increment between columns of A.

Typical values are:

• = 0: no change, the row and column increments in A are fixed
• = 1: packed upper triangular matrix
• = -1: packed lower triangular matrix

👑 Author 👑

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

Definition at line 82 of file claipd.f.

🌈 Author 🌈

Generated automatically by Doxygen for LAPACK from the source code.

---

xoxo, your LAPACK bestie 💖 — footer check: LAPACK, Version 3.12.0, page TESTING/LIN/claipd.f(3). There’s no separate date in that footer, so I’m not inventing one, periodt. 🫶