syconvf(3)

syconvf(3) β€” the syconvf page πŸ’…

okay bestie, welcome to the Library Functions Manual entry for syconvf. this is the girly who converts your factorization between the plain hetrf / sytrf format and the fancy hetrf_rk / sytrf_rk (or _bk) format. she does both directions. she does all four precisions. she does not do small talk. ✨


🌸 NAME 🌸

syconvf β€” syconvf: convert to/from hetrf to hetrf_rk format

like, the whole thing. the conversion. that's her job. πŸ’–


πŸŽ€ SYNOPSIS πŸŽ€

✨ Functions ✨

  • subroutine csyconvf (uplo, way, n, a, lda, e, ipiv, info) β€” CSYCONVF
  • subroutine dsyconvf (uplo, way, n, a, lda, e, ipiv, info) β€” DSYCONVF
  • subroutine ssyconvf (uplo, way, n, a, lda, e, ipiv, info) β€” SSYCONVF
  • subroutine zsyconvf (uplo, way, n, a, lda, e, ipiv, info) β€” ZSYCONVF

four flavors, one vibe. pick your precision, babe. πŸ“


πŸ¦‹ Detailed Description πŸ¦‹

okay so this is the section that's literally just the heading doing the heavy lifting, and then the actual goods live down in Function Documentation. no cap, that's the real content, keep scrolling. πŸ‘‘


πŸ‘‘ Function Documentation πŸ‘‘

πŸ’œ subroutine csyconvf

subroutine csyconvf (character uplo, character way, integer n,
     complex, dimension( lda, * ) a, integer lda,
     complex, dimension( * ) e, integer, dimension( * ) ipiv,
     integer info)

CSYCONVF β€” the complex single-precision one. she's the main character here, first one on the page. 🫢

πŸ”₯ Purpose πŸ”₯

  • If parameter WAY = 'C': CSYCONVF converts the factorization output format used in CSYTRF provided on entry in parameter A into the factorization output format used in CSYTRF_RK (or CSYTRF_BK) that is stored on exit in parameters A and E. It also converts in place details of the interchanges stored in IPIV from the format used in CSYTRF into the format used in CSYTRF_RK (or CSYTRF_BK).
  • If parameter WAY = 'R': CSYCONVF performs the conversion in reverse direction, i.e. converts the factorization output format used in CSYTRF_RK (or CSYTRF_BK) provided on entry in parameters A and E into the factorization output format used in CSYTRF that is stored on exit in parameter A. It also converts in place details of the interchanges stored in IPIV from the format used in CSYTRF_RK (or CSYTRF_BK) into the format used in CSYTRF.
  • CSYCONVF can also convert in Hermitian matrix case, i.e. between formats used in CHETRF and CHETRF_RK (or CHETRF_BK). yes she's versatile like that πŸ’…

πŸ’– Parameters πŸ’–

  • UPLO
UPLO is CHARACTER*1

Specifies whether the details of the factorization are stored as an upper or lower triangular matrix A.

  • = 'U': Upper triangular
  • = 'L': Lower triangular
  • WAY
WAY is CHARACTER*1
  • = 'C': Convert
  • = 'R': Revert

convert or revert. two moods. pick one. πŸ™ˆ

  • N
N is INTEGER

The order of the matrix A. N >= 0.

  • A
A is COMPLEX array, dimension (LDA,N)
  • 1) If WAY ='C':
    • On entry, contains factorization details in format used in CSYTRF:
      • a) all elements of the symmetric block diagonal matrix D on the diagonal of A and on superdiagonal (or subdiagonal) of A, and
      • b) If UPLO = 'U': multipliers used to obtain factor U in the superdiagonal part of A. If UPLO = 'L': multipliers used to obtain factor L in the superdiagonal part of A.
    • On exit, contains factorization details in format used in CSYTRF_RK or CSYTRF_BK:
      • a) ONLY diagonal elements of the symmetric block diagonal matrix D on the diagonal of A, i.e. D(k,k) = A(k,k); (superdiagonal (or subdiagonal) elements of D are stored on exit in array E), and
      • b) If UPLO = 'U': factor U in the superdiagonal part of A. If UPLO = 'L': factor L in the subdiagonal part of A.
  • 2) If WAY = 'R':
    • On entry, contains factorization details in format used in CSYTRF_RK or CSYTRF_BK:
      • a) ONLY diagonal elements of the symmetric block diagonal matrix D on the diagonal of A, i.e. D(k,k) = A(k,k); (superdiagonal (or subdiagonal) elements of D are stored on exit in array E), and
      • b) If UPLO = 'U': factor U in the superdiagonal part of A. If UPLO = 'L': factor L in the subdiagonal part of A.
    • On exit, contains factorization details in format used in CSYTRF:
      • a) all elements of the symmetric block diagonal matrix D on the diagonal of A and on superdiagonal (or subdiagonal) of A, and
      • b) If UPLO = 'U': multipliers used to obtain factor U in the superdiagonal part of A. If UPLO = 'L': multipliers used to obtain factor L in the superdiagonal part of A.

note how entry and exit literally swap places depending on WAY. it's giving mirror. it's giving reversible jacket. 🧚

  • LDA
LDA is INTEGER

The leading dimension of the array A. LDA >= max(1,N).

  • E
E is COMPLEX array, dimension (N)
  • 1) If WAY ='C':
    • On entry, just a workspace.
    • On exit, contains the superdiagonal (or subdiagonal) elements of the symmetric block diagonal matrix D with 1-by-1 or 2-by-2 diagonal blocks, where
      • If UPLO = 'U': E(i) = D(i-1,i), i=2:N, E(1) is set to 0;
      • If UPLO = 'L': E(i) = D(i+1,i), i=1:N-1, E(N) is set to 0.
  • 2) If WAY = 'R':
    • On entry, contains the superdiagonal (or subdiagonal) elements of the symmetric block diagonal matrix D with 1-by-1 or 2-by-2 diagonal blocks, where
      • If UPLO = 'U': E(i) = D(i-1,i),i=2:N, E(1) not referenced;
      • If UPLO = 'L': E(i) = D(i+1,i),i=1:N-1, E(N) not referenced.
    • On exit, is not changed

bestie the E array is literally the workspace-turned-storage glow-up in one direction and untouched baggage in the other. iconic behavior. 🌈

  • IPIV
IPIV is INTEGER array, dimension (N)
  • 1) If WAY ='C': On entry, details of the interchanges and the block structure of D in the format used in CSYTRF. On exit, details of the interchanges and the block structure of D in the format used in CSYTRF_RK ( or CSYTRF_BK).
  • 1) If WAY ='R': On entry, details of the interchanges and the block structure of D in the format used in CSYTRF_RK ( or CSYTRF_BK). On exit, details of the interchanges and the block structure of D in the format used in CSYTRF.
ok yes, the list numbers are 1) and then 1) again β€” that's exactly how the page has it, and we are not about to go fixing the original's numbering. we report, we don't edit. πŸ’€
  • INFO
INFO is INTEGER
  • = 0: successful exit
  • < 0: if INFO = -i, the i-th argument had an illegal value

negative INFO means somebody handed her a bad argument and she's telling you which one by index. read the number, fix the argument, try again. πŸ”₯

🌟 Author 🌟

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

🫢 Contributors: 🫢

  • November 2017, Igor Kozachenko, Computer Science Division, University of California, Berkeley

⭐ Definition ⭐

Definition at line 208 of file csyconvf.f.


πŸ¦‹ subroutine dsyconvf

subroutine dsyconvf (character uplo, character way, integer n,
     double precision, dimension( lda, * ) a, integer lda,
     double precision, dimension( * ) e, integer, dimension( * ) ipiv,
     integer info)

DSYCONVF β€” same gig, double precision edition. she's the sensible older sister and she keeps every single detail identical. ✨

πŸ”₯ Purpose πŸ”₯

  • If parameter WAY = 'C': DSYCONVF converts the factorization output format used in DSYTRF provided on entry in parameter A into the factorization output format used in DSYTRF_RK (or DSYTRF_BK) that is stored on exit in parameters A and E. It also converts in place details of the interchanges stored in IPIV from the format used in DSYTRF into the format used in DSYTRF_RK (or DSYTRF_BK).
  • If parameter WAY = 'R': DSYCONVF performs the conversion in reverse direction, i.e. converts the factorization output format used in DSYTRF_RK (or DSYTRF_BK) provided on entry in parameters A and E into the factorization output format used in DSYTRF that is stored on exit in parameter A. It also converts in place details of the interchanges stored in IPIV from the format used in DSYTRF_RK (or DSYTRF_BK) into the format used in DSYTRF.
heads up: unlike CSYCONVF up there, this Purpose block has no Hermitian-matrix extra paragraph. we're not adding one. we don't invent lore. πŸ’…

πŸ’– Parameters πŸ’–

  • UPLO
UPLO is CHARACTER*1

Specifies whether the details of the factorization are stored as an upper or lower triangular matrix A.

  • = 'U': Upper triangular
  • = 'L': Lower triangular
  • WAY
WAY is CHARACTER*1
  • = 'C': Convert
  • = 'R': Revert
  • N
N is INTEGER

The order of the matrix A. N >= 0.

  • A β€” and this is literally where part 1 of the page runs out, bestie. the A parameter details are coming in the next chunk, so hold that thought πŸŽ€

A is a DOUBLE PRECISION array, dimension (LDA,N) β€” and bestie, this array is literally the main character of the whole operation, so pay attention πŸ‘‘

  1. If WAY ='C':

On entry, it holds factorization details in the format used in DSYTRF, like:

  • a) all elements of the symmetric block diagonal matrix D on the diagonal of A and on superdiagonal (or subdiagonal) of A, and
  • b) If UPLO = 'U': multipliers used to obtain factor U in the superdiagonal part of A. If UPLO = 'L': multipliers used to obtain factor L in the superdiagonal part of A.

On exit, it holds factorization details in the format used in DSYTRF_RK or DSYTRF_BK:

  • a) ONLY diagonal elements of the symmetric block diagonal matrix D on the diagonal of A, i.e. D(k,k) = A(k,k); (superdiagonal (or subdiagonal) elements of D are stored on exit in array E), and
  • b) If UPLO = 'U': factor U in the superdiagonal part of A. If UPLO = 'L': factor L in the subdiagonal part of A.
  1. If WAY = 'R':

On entry, it holds factorization details in the format used in DSYTRF_RK or DSYTRF_BK:

  • a) ONLY diagonal elements of the symmetric block diagonal matrix D on the diagonal of A, i.e. D(k,k) = A(k,k); (superdiagonal (or subdiagonal) elements of D are stored on exit in array E), and
  • b) If UPLO = 'U': factor U in the superdiagonal part of A. If UPLO = 'L': factor L in the subdiagonal part of A.

On exit, it holds factorization details in the format used in DSYTRF:

  • a) all elements of the symmetric block diagonal matrix D on the diagonal of A and on superdiagonal (or subdiagonal) of A, and
  • b) If UPLO = 'U': multipliers used to obtain factor U in the superdiagonal part of A. If UPLO = 'L': multipliers used to obtain factor L in the superdiagonal part of A.

LDA β€” INTEGER energy, and it's giving "how much room did you book." It's the leading dimension of the array A. The rule, no cap: LDA >= max(1,N) πŸŽ€


E β€” DOUBLE PRECISION array, dimension (N). She's the sidekick that lowkey carries the tea πŸ«–

  1. If WAY ='C':

On entry, she's just a workspace. Literally nothing going on, unemployed, feral.

On exit, she contains the superdiagonal (or subdiagonal) elements of the symmetric block diagonal matrix D with 1-by-1 or 2-by-2 diagonal blocks, where:

  • If UPLO = 'U': E(i) = D(i-1,i), i=2:N, E(1) is set to 0;
  • If UPLO = 'L': E(i) = D(i+1,i), i=1:N-1, E(N) is set to 0.
  1. If WAY = 'R':

On entry, she contains the superdiagonal (or subdiagonal) elements of the symmetric block diagonal matrix D with 1-by-1 or 2-by-2 diagonal blocks, where:

  • If UPLO = 'U': E(i) = D(i-1,i), i=2:N, E(1) not referenced;
  • If UPLO = 'L': E(i) = D(i+1,i), i=1:N-1, E(N) not referenced.

On exit, she is not changed. Iconic behavior honestly β€” she simply refuses to be altered πŸ’…


IPIV β€” INTEGER array, dimension (N). The receipts πŸ“‹

  1. If WAY ='C': On entry, details of the interchanges and the block structure of D in the format used in DSYTRF. On exit, details of the interchanges and the block structure of D in the format used in DSYTRF_RK ( or DSYTRF_BK).
  2. If WAY ='R': On entry, details of the interchanges and the block structure of D in the format used in DSYTRF_RK ( or DSYTRF_BK). On exit, details of the interchanges and the block structure of D in the format used in DSYTRF.

INFO β€” INTEGER, the vibe check at the end of the run πŸ¦‹

  • = 0: successful exit β€” slay, we ate, nothing to see here ✨
  • < 0: if INFO = -i, the i-th argument had an illegal value β€” yeah, someone handed you a bad argument, that's a you problem bestie 😭

🌸 Author 🌸

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

πŸŽ€ Contributors πŸŽ€

November 2017, Igor Kozachenko, Computer Science Division, University of California, Berkeley

Definition at line 205 of file dsyconvf.f.


πŸ’œ subroutine ssyconvf πŸ’œ

Okay so now we do it all again but in REAL β€” same lore, single precision this time, and honestly? Still iconic:

subroutine ssyconvf (character uplo, character way, integer n, real,
    dimension( lda, * ) a, integer lda, real, dimension( * ) e, integer,
    dimension( * ) ipiv, integer info)

🌈 SSYCONVF 🌈

✨ Purpose ✨

So here's the whole point of this little function, laid out for you:

If parameter WAY = 'C': SSYCONVF converts the factorization output format used in SSYTRF provided on entry in parameter A into the factorization output format used in SSYTRF_RK (or SSYTRF_BK) that is stored on exit in parameters A and E. It also converts in place details of the interchanges stored in IPIV from the format used in SSYTRF into the format used in SSYTRF_RK (or SSYTRF_BK).

If parameter WAY = 'R': SSYCONVF performs the conversion in reverse direction, i.e. converts the factorization output format used in SSYTRF_RK (or SSYTRF_BK) provided on entry in parameters A and E into the factorization output format used in SSYTRF that is stored on exit in parameter A. It also converts in place details of the interchanges stored in IPIV from the format used in SSYTRF_RK (or SSYTRF_BK) into the format used in SSYTRF.

So basically it's a translator between two friend groups who refuse to use the same slang 🫢

✨ Parameters ✨

UPLO β€” UPLO is CHARACTER*1. It says whether the details of the factorization are stored as an upper or lower triangular matrix A.

  • = 'U': Upper triangular
  • = 'L': Lower triangular

WAY β€” WAY is CHARACTER*1, the direction of the whole commute πŸš—

  • = 'C': Convert
  • = 'R': Revert

N β€” N is INTEGER. The order of the matrix A. And listen: N >= 0. Zero is allowed, negative is not, don't try it πŸ™ˆ


A β€” A is REAL array, dimension (LDA,N). Same deal as the double version, just REAL now:

  1. If WAY ='C':

On entry, contains factorization details in format used in SSYTRF:

  • a) all elements of the symmetric block diagonal matrix D on the diagonal of A and on superdiagonal (or subdiagonal) of A, and
  • b) If UPLO = 'U': multipliers used to obtain factor U in the superdiagonal part of A. If UPLO = 'L': multipliers used to obtain factor L in the superdiagonal part of A.

On exit, contains factorization details in format used in SSYTRF_RK or SSYTRF_BK:

  • a) ONLY diagonal elements of the symmetric block diagonal matrix D on the diagonal of A, i.e. D(k,k) = A(k,k); (superdiagonal (or subdiagonal) elements of D are stored on exit in array E), and
  • b) If UPLO = 'U': factor U in the superdiagonal part of A. If UPLO = 'L': factor L in the subdiagonal part of A.
  1. If WAY = 'R':

On entry, contains factorization details in format used in SSYTRF_RK or SSYTRF_BK:

  • a) ONLY diagonal elements of the symmetric block diagonal matrix D on the diagonal of A, i.e. D(k,k) = A(k,k); (superdiagonal (or subdiagonal) elements of D are stored on exit in array E), and
  • b) If UPLO = 'U': factor U in the superdiagonal part of A. If UPLO = 'L': factor L in the subdiagonal part of A.

On exit, contains factorization details in format used in SSYTRF:

  • a) all elements of the symmetric block diagonal matrix D on the diagonal of A and on superdiagonal (or subdiagonal) of A, and
  • b) If UPLO = 'U': multipliers used to obtain factor U in the superdiagonal part of A. If UPLO = 'L': multipliers used to obtain factor L in the superdiagonal part of A.

LDA β€” LDA is INTEGER. The leading dimension of the array A, and again: LDA >= max(1,N). Non-negotiable, it's the rule πŸ’…


E β€” E is REAL array, dimension (N). Round two of the sidekick arc:

  1. If WAY ='C':

On entry, just a workspace. (Again. Poor thing.)

On exit, contains the superdiagonal (or subdiagonal) elements of the symmetric block diagonal matrix D with 1-by-1 or 2-by-2 diagonal blocks, where:

  • If UPLO = 'U': E(i) = D(i-1,i), i=2:N, E(1) is set to 0;
  • If UPLO = 'L': E(i) = D(i+1,i), i=1:N-1, E(N) is set to 0.
  1. If WAY = 'R':

On entry, contains the superdiagonal (or subdiagonal) elements of the symmetric block diagonal matrix D with 1-by-1 or 2-by-2 diagonal blocks, where:

  • If UPLO = 'U': E(i) = D(i-1,i), i=2:N, E(1) not referenced;
  • If UPLO = 'L': E(i) = D(i+1,i), i=1:N-1, E(N) not referenced.

On exit, is not changed. Queen stays exactly as she is, we respect it πŸ’œ


IPIV

  • IPIV β€” INTEGER array, dimension (N). The receipts for the pivoting πŸ’…
    1. If WAY = 'C': on entry, it's the interchanges + block structure of D in the format used in SSYTRF. On exit, it's the interchanges + block structure of D in the format used in SSYTRF_RK (or SSYTRF_BK).
    2. If WAY = 'R': on entry, it's the interchanges + block structure of D in the format used in SSYTRF_RK (or SSYTRF_BK). On exit, it's the interchanges + block structure of D in the format used in SSYTRF.
okay yes, the original literally numbers both of those as "1)" β€” not a typo I made, she's just like that πŸ™ˆ either way the deal is: 'C' goes SSYTRF β†’ SSYTRF_RK/BK, 'R' goes the other way. Same info, opposite directions, no cap.
  • INFO β€” INTEGER. The vibe report at the end 🌈
    • = 0: successful exit β€” she ate, no notes ✨
    • < 0: if INFO = -i, the i-th argument had an illegal value β€” so go check argument number i, bestie πŸ’€

πŸ‘‘ Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

🫢 Contributors:

November 2017, Igor Kozachenko, Computer Science Division, University of California, Berkeley

Definition at line 205 of file ssyconvf.f.


πŸ’œ subroutine zsyconvf

subroutine zsyconvf (character uplo, character way, integer n, complex*16,
    dimension( lda, * ) a, integer lda, complex*16, dimension( * ) e,
    integer, dimension( * ) ipiv, integer info)

ZSYCONVF β€” the complex*16 sibling of the one we just did, and she's serving the exact same energy πŸ¦‹

🌸 Purpose:

If parameter WAY = 'C': ZSYCONVF converts the factorization output format used in ZSYTRF provided on entry in parameter A into the factorization output format used in ZSYTRF_RK (or ZSYTRF_BK) that is stored on exit in parameters A and E. It also converts in place details of the interchanges stored in IPIV from the format used in ZSYTRF into the format used in ZSYTRF_RK (or ZSYTRF_BK).

If parameter WAY = 'R': ZSYCONVF performs the conversion in reverse direction, i.e. converts the factorization output format used in ZSYTRF_RK (or ZSYTRF_BK) provided on entry in parameters A and E into the factorization output format used in ZSYTRF that is stored on exit in parameter A. It also converts in place details of the interchanges stored in IPIV from the format used in ZSYTRF_RK (or ZSYTRF_BK) into the format used in ZSYTRF.

ZSYCONVF can also convert in Hermitian matrix case, i.e. between formats used in ZHETRF and ZHETRF_RK (or ZHETRF_BK). 🧚 icon behaviour honestly


✨ Parameters

  • UPLO β€” CHARACTER*1. Specifies whether the details of the factorization are stored as an upper or lower triangular matrix A πŸ’…
    • = 'U': Upper triangular
    • = 'L': Lower triangular
  • WAY β€” CHARACTER*1. Which direction we're going, queen πŸ‘‘
    • = 'C': Convert
    • = 'R': Revert
  • N β€” INTEGER. The order of the matrix A. N >= 0. (Zero is allowed, she's flexible but not that flexible, keep it >= 0 fr fr.)
  • A β€” COMPLEX*16 array, dimension (LDA,N). Main character energy, she's carrying the whole routine πŸŽ€
    1. If WAY = 'C':

On entry, contains factorization details in format used in ZSYTRF:

  • a) all elements of the symmetric block diagonal matrix D on the diagonal of A and on superdiagonal (or subdiagonal) of A, and
  • b) If UPLO = 'U': multipliers used to obtain factor U in the superdiagonal part of A. If UPLO = 'L': multipliers used to obtain factor L in the superdiagonal part of A.

On exit, contains factorization details in format used in ZSYTRF_RK or ZSYTRF_BK:

  • a) ONLY diagonal elements of the symmetric block diagonal matrix D on the diagonal of A, i.e. D(k,k) = A(k,k); (superdiagonal (or subdiagonal) elements of D are stored on exit in array E), and
  • b) If UPLO = 'U': factor U in the superdiagonal part of A. If UPLO = 'L': factor L in the subdiagonal part of A.
  1. If WAY = 'R':

On entry, contains factorization details in format used in ZSYTRF_RK or ZSYTRF_BK:

  • a) ONLY diagonal elements of the symmetric block diagonal matrix D on the diagonal of A, i.e. D(k,k) = A(k,k); (superdiagonal (or subdiagonal) elements of D are stored on exit in array E), and
  • b) If UPLO = 'U': factor U in the superdiagonal part of A. If UPLO = 'L': factor L in the subdiagonal part of A.

On exit, contains factorization details in format used in ZSYTRF:

  • a) all elements of the symmetric block diagonal matrix D on the diagonal of A and on superdiagonal (or subdiagonal) of A, and
  • b) If UPLO = 'U': multipliers used to obtain factor U in the superdiagonal part of A. If UPLO = 'L': multipliers used to obtain factor L in the superdiagonal part of A.
  • LDA β€” INTEGER. The leading dimension of the array A. LDA >= max(1,N). Don't skimp on her, she needs the room πŸ“
  • E β€” COMPLEX*16 array, dimension (N). The off-diagonal bestie πŸ’œ
    1. If WAY = 'C':

On entry, just a workspace. She's literally just vibing, holding nothing, no thoughts head empty πŸ™ˆ

On exit, contains the superdiagonal (or subdiagonal) elements of the symmetric block diagonal matrix D with 1-by-1 or 2-by-2 diagonal blocks, where If UPLO = 'U': E(i) = D(i-1,i), i=2:N, E(1) is set to 0; If UPLO = 'L': E(i) = D(i+1,i), i=1:N-1, E(N) is set to 0.

  1. If WAY = 'R':

On entry, contains the superdiagonal (or subdiagonal) elements of the symmetric block diagonal matrix D with 1-by-1 or 2-by-2 diagonal blocks, where If UPLO = 'U': E(i) = D(i-1,i), i=2:N, E(1) not referenced; If UPLO = 'L': E(i) = D(i+1,i), i=1:N-1, E(N) not referenced.

On exit, is not changed. She goes in the same, she comes out the same β€” iconic consistency, we love to see it ✨

  • IPIV β€” INTEGER array, dimension (N). Same receipts, complex edition 🧾
    1. If WAY = 'C': on entry, details of the interchanges and the block structure of D in the format used in ZSYTRF. On exit, details of the interchanges and the block structure of D in the format used in ZSYTRF_RK (or ZSYTRF_BK).
    2. If WAY = 'R': on entry, details of the interchanges and the block structure of D in the format used in ZSYTRF_RK (or ZSYTRF_BK). On exit, details of the interchanges and the block structure of D in the format used in ZSYTRF.
and yes, the "1)" twice thing is in the source too. It's a family trait at this point, iykyk 😭
  • INFO β€” INTEGER. The final vibe check ⭐
    • = 0: successful exit
    • < 0: if INFO = -i, the i-th argument had an illegal value

πŸ‘‘ Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

🫢 Contributors:

November 2017, Igor Kozachenko, Computer Science Division, University of California, Berkeley

Definition at line 208 of file zsyconvf.f.


πŸ’« Author

Generated automatically by Doxygen for LAPACK from the source code. (not a human, just a very diligent little robot πŸ€–βœ¨)


and that's the whole page, bestie β€” go forth and convert/revert those factorization formats with confidence πŸ¦‹πŸ’…

Source of this masterpiece: LAPACK, Version 3.12.0, from syconvf(3) β€” see you in the next manpage, mwah πŸŽ€πŸ’–

πŸ“¦ where this page comes from