/home/abui...RC/cspmv.f(3)

okay bestie, welcome to the cspmv.f page from the Library Functions Manual — it's giving complex symmetric packed matrix energy and honestly it's iconic. The whole path is a journey: /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/cspmv.f 💅

🌸 NAME 🌸

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/cspmv.f — no cap, that's literally the whole name. 🎀

---

✨ SYNOPSIS ✨

🦋 Functions/Subroutines 🦋

• subroutine CSPMV (uplo, n, alpha, ap, x, incx, beta, y, incy) — CSPMV computes a matrix-vector product for complex vectors using a complex symmetric packed matrix. periodt. 💖

---

💖 Function/Subroutine Documentation 💖

👑 subroutine CSPMV (character uplo, integer n, complex alpha, complex, dimension( * ) ap, complex, dimension( * ) x, integer incx, complex beta, complex, dimension( * ) y, integer incy) 👑

CSPMV computes a matrix-vector product for complex vectors using a complex symmetric packed matrix. lowkey iconic.

🎀 Purpose 🎀

CSPMV performs the matrix-vector operation:

y := alpha*A*x + beta*y,

where alpha and beta are scalars, x and y are n element vectors and A is an n by n symmetric matrix, supplied in packed form. fr fr. 🌈

💅 Parameters 💅

• UPLO — is CHARACTER*1. On entry, UPLO specifies whether the upper or lower triangular part of the matrix A is supplied in the packed array AP as follows: UPLO = 'U' or 'u' → the upper triangular part of A is supplied in AP; UPLO = 'L' or 'l' → the lower triangular part of A is supplied in AP. Unchanged on exit. ✨
• N — is INTEGER. On entry, N specifies the order of the matrix A. N must be at least zero. Unchanged on exit. 🦋
• ALPHA — is COMPLEX. On entry, ALPHA specifies the scalar alpha. Unchanged on exit. 💖
• AP — is COMPLEX array, dimension at least ( ( N*( N + 1 ) )/2 ). Before entry, with UPLO = 'U' or 'u', the array AP must contain the upper triangular part of the symmetric matrix packed sequentially, column by column, so that AP( 1 ) contains a( 1, 1 ), AP( 2 ) and AP( 3 ) contain a( 1, 2 ) and a( 2, 2 ) respectively, and so on. Before entry, with UPLO = 'L' or 'l', the array AP must contain the lower triangular part of the symmetric matrix packed sequentially, column by column, so that AP( 1 ) contains a( 1, 1 ), AP( 2 ) and AP( 3 ) contain a( 2, 1 ) and a( 3, 1 ) respectively, and so on. Unchanged on exit. 🎀
• X — is COMPLEX array, dimension at least ( 1 + ( N - 1 )*abs( INCX ) ). Before entry, the incremented array X must contain the N-element vector x. Unchanged on exit. 🌸
• INCX — is INTEGER. On entry, INCX specifies the increment for the elements of X. INCX must not be zero. Unchanged on exit. 🔥
• BETA — is COMPLEX. On entry, BETA specifies the scalar beta. When BETA is supplied as zero then Y need not be set on input. Unchanged on exit. 👑
• Y — is COMPLEX array, dimension at least ( 1 + ( N - 1 )*abs( INCY ) ). Before entry, the incremented array Y must contain the n element vector y. On exit, Y is overwritten by the updated vector y. 💀
• INCY — is INTEGER. On entry, INCY specifies the increment for the elements of Y. INCY must not be zero. Unchanged on exit. 🫶

🌈 Author 🌈

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

📌 Definition 📌

Definition at line 150 of file cspmv.f.

---

🫶 Author 🫶

Generated automatically by Doxygen for LAPACK from the source code.

---

This page is from LAPACK Version 3.12.0, file /home/abui...RC/cspmv.f(3), and it was generated automatically by Doxygen for LAPACK from the source code. stay slaying, bestie 💖✨🎀