SRC/dlartv.f(3)

📦
version 3.12.1 · 4 versions
, in arch rolling

okay so, bestie, this is the manual page for SRC/dlartv.f 💅 — and the manual name folded in near the top is literally Library Functions Manual. It's giving tiny Fortran subroutine with main character energy, and it's here to explain how dlartv applies plane rotations to a pair of real vectors. No cap.

🦋 NAME 🦋

SRC/dlartv.f

🌸 SYNOPSIS 🌸

✨ Functions/Subroutines ✨

  • subroutine dlartv (n, x, incx, y, incy, c, s, incc) — DLARTV applies a vector of plane rotations with real cosines and real sines to the elements of a pair of vectors.

💖 Function/Subroutine Documentation 💖

subroutine dlartv (integer n, double precision, dimension( * ) x, integer
    incx, double precision, dimension( * ) y, integer incy, double
    precision, dimension( * ) c, double precision, dimension( * ) s, integer
    incc)

DLARTV applies a vector of plane rotations with real cosines and real sines to the elements of a pair of vectors. That's the whole vibe: cosines, sines, two vectors, rotations, iconic.

🔥 Purpose 🔥

The source comments spell it out like this, and we are keeping them exactly, bestie:

!>
!> DLARTV applies a vector of real plane rotations to elements of the
!> real vectors x and y. For i = 1,2,...,n
!>
!>    ( x(i) ) := (  c(i)  s(i) ) ( x(i) )
!>    ( y(i) )    ( -s(i)  c(i) ) ( y(i) )
!>

🌈 Parameters 🌈

🌟 N 🌟

N is INTEGER. It's the number of plane rotations to be applied. That's the count, periodt.

🌟 X 🌟

X is a DOUBLE PRECISION array, dimension (1+(N-1)*INCX). It's the vector x.

🌟 INCX 🌟

INCX is INTEGER. It's the increment between elements of X. It has to satisfy INCX > 0.

🌟 Y 🌟

Y is a DOUBLE PRECISION array, dimension (1+(N-1)*INCY). It's the vector y.

🌟 INCY 🌟

INCY is INTEGER. It's the increment between elements of Y. It has to satisfy INCY > 0.

🌟 C 🌟

C is a DOUBLE PRECISION array, dimension (1+(N-1)*INCC). These are the cosines of the plane rotations.

🌟 S 🌟

S is a DOUBLE PRECISION array, dimension (1+(N-1)*INCC). These are the sines of the plane rotations.

🌟 INCC 🌟

INCC is INTEGER. It's the increment between elements of C and S. It has to satisfy INCC > 0.

👑 Author 👑

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

Definition at line 107 of file dlartv.f.

💜 Author 💜

Generated automatically by Doxygen for LAPACK from the source code.

okay that's the whole page, bestie 🫶 — footer source/version sign-off repping LAPACK, Version 3.12.0, and SRC/dlartv.f(3). That's what's there, no extra date hiding in the footer. Slay, goodbye 💅✨

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