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

🌸 NAME 🌸

okay bestie, this is the /home/abui...RC/slarf.f(3) page from the Library Functions Manual — and the NAME line is literally the source path: /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/SRC/slarf.f. slay. 💅

✨ SYNOPSIS ✨

🧚 Functions/Subroutines

subroutine SLARF (side, m, n, v, incv, tau, c, ldc, work)
    SLARF applies an elementary reflector to a general rectangular
    matrix.

short vibe: SLARF applies an elementary reflector to a general rectangular matrix. no cap. 🦋

💖 Function/Subroutine Documentation 💖

subroutine SLARF (character side, integer m, integer n, real, dimension( * )
    v, integer incv, real tau, real, dimension( ldc, * ) c, integer ldc,
    real, dimension( * ) work)

again for the people in the back: SLARF applies an elementary reflector to a general rectangular matrix. periodt.

🎯 Purpose

SLARF applies a real elementary reflector H to a real m by n matrix C, from either the left or the right. H is represented in the form:

H = I - tau * v * v**T

where tau is a real scalar and v is a real vector. 💫

If tau = 0, then H is taken to be the unit matrix. yep, that's the whole mood.

🧸 Parameters

🦋 SIDE

SIDE is CHARACTER*1

• = 'L': form H * C
• = 'R': form C * H

🦋 M

M is INTEGER

The number of rows of the matrix C.

🦋 N

N is INTEGER

The number of columns of the matrix C.

🦋 V

V is REAL array, dimension

(1 + (M-1)*abs(INCV)) if SIDE = 'L'
or (1 + (N-1)*abs(INCV)) if SIDE = 'R'

The vector v in the representation of H. V is not used if TAU = 0.

🦋 INCV

INCV is INTEGER

The increment between elements of v. INCV <> 0.

🦋 TAU

TAU is REAL

The value tau in the representation of H.

🦋 C

C is REAL array, dimension (LDC,N)

On entry, the m by n matrix C. On exit, C is overwritten by the matrix H * C if SIDE = 'L', or C * H if SIDE = 'R'.

🦋 LDC

LDC is INTEGER

The leading dimension of the array C. LDC >= max(1,M).

🦋 WORK

WORK is REAL array, dimension

(N) if SIDE = 'L'
or (M) if SIDE = 'R'

🌟 Author

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

Definition at line 123 of file slarf.f.

👑 Author

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

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that's the whole page, bestie — LAPACK Version 3.12.0, page /home/abui...RC/slarf.f(3). 🫶✨