CSWAP(3)

💅 CSWAP(3) — the girlies swap vectors now

ok so this page lives in the Library Functions Manual section, and the file it's documenting is literally /home/abui...SRC/cswap.f(3) — yes that's the header, we're moving on bestie 🫶

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✨ NAME ✨

/home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/BLAS/SRC/cswap.f

that's it. that's the whole name section. it's giving "the file path IS the personality" 💀 (it's from LAPACK, the BLAS SRC folder, you know the vibes)

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🦋 SYNOPSIS 🦋

Functions/Subroutines

• subroutine CSWAP (n, cx, incx, cy, incy)
  • CSWAP

like, that's the whole call. five arguments. no cap ✨

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🌸 Function/Subroutine Documentation 🌸

subroutine CSWAP (integer n, complex, dimension(*) cx, integer incx, complex, dimension(*) cy, integer incy)

CSWAP

🎀 Purpose:

!>
!>   CSWAP interchanges two vectors.
!>

ok so this is THE function. CSWAP interchanges two vectors — like, it swaps them. fully trades them. no takebacks. iconic behaviour honestly 👑

💖 Parameters

• N

!>          N is INTEGER
!>         number of elements in input vector(s)
!>

it's an INTEGER and it's the number of elements in your input vector(s) — the whole count, the vibe check for how much data we're dealing with 🔥

• CX

!>          CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
!>

a COMPLEX array, and the dimension is literally ( 1 + ( N - 1 )*abs( INCX ) ) — write that down, don't freestyle it 💅

• INCX

!>          INCX is INTEGER
!>         storage spacing between elements of CX
!>

INTEGER, and it's the storage spacing between elements of CX. so like, how far apart the elements are chillin' in memory 🦋

• CY

!>          CY is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) )
!>

the other COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) ) — note the INCY, not INCX, she's different, don't mix them up bestie 😭

• INCY

!>          INCY is INTEGER
!>         storage spacing between elements of CY
!>

INTEGER, storage spacing between elements of CY. matching energy with INCX but for the y side 🫶

👑 Author

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

the whole squad. academic royalty. we stan 🌈

⭐ Further Details:

!>
!>     jack dongarra, linpack, 3/11/78.
!>     modified 12/3/93, array(1) declarations changed to array(*)
!>

drag him, he's been here since 3/11/78 (linpack era, ancient) and then modified 12/3/93 when the array(1) declarations got changed to array(*). a glow-up for the ages 💜

Definition at line 80 of file cswap.f. — that's literally where she lives, line 80, go look 🔍

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🌺 Author (the meta one) 🌺

Generated automatically by Doxygen for LAPACK from the source code.

so nobody hand-wrote this page, Doxygen did it. slay for automation I guess ✨

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lowkey important: all the array dimension formulas, the abs() calls, the dimension(*) in the signature — those are the actual contract, so copy them exactly and don't get cute with them 💀

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ok that's the whole page bestie, ily, go swap some vectors 🎀

this was LAPACK, Version 3.12.0, and the source file is /home/abui...SRC/cswap.f(3) — mwah, see you in the next manpage 💅✨