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feat: add lapack/base/dorm2r - #7797

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feat: add lapack/base/dorm2r#7797
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@aayush0325 aayush0325 commented Aug 3, 2025

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This pull request:

  • adds lapack/base/dorm2r

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@aayush0325
feat: lapack/base/dorm2r
caff697 
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@aayush0325
aayush0325 marked this pull request as draft August 3, 2025 06:57
@stdlib-bot stdlib-bot added LAPACK Issue or pull request related to the Linear Algebra Package (LAPACK). Needs Review A pull request which needs code review. and removed Needs Review A pull request which needs code review. labels Aug 3, 2025
@aayush0325 aayush0325 mentioned this pull request Aug 4, 2025
Closed
@aayush0325
test: add initial tests
871e7fc 
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@aayush0325
fix: fix tests
2a5a501 
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@stdlib-bot

stdlib-bot commented Aug 7, 2025 •
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Coverage Report

Package Statements Branches Functions Lines
lapack/base/dorm2r $\\color{red}459/471$
$\\color{green}+0.22\\%$ 		$\\color{red}36/43$
$\\color{green}+4.02\\%$ 		$\\color{green}3/3$
$\\color{green}+0.00\\%$ 		$\\color{red}459/471$
$\\color{green}+0.22\\%$

The above coverage report was generated for the changes in this PR.

@aayush0325 aayush0325 added GSoC Google Summer of Code. gsoc: 2025 Google Summer of Code (2025). labels Aug 7, 2025
@aayush0325
test: add tests
6956d09 
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chore: idk whats going on anymore
ec7f59a 
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chore: test w different fixtures???
0706df5 
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feat: add examples and benchmarks
d0b53be 
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kgryte
kgryte reviewed Aug 7, 2025
View reviewed changes
Comment thread lib/node_modules/@stdlib/lapack/base/dorm2r/lib/base.js

// Determine loop indices based on side and trans
if ( ( left && !notran ) || ( !left && notran ) ) {
i1 = 1;

@kgryte kgryte Aug 7, 2025

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I'd go ahead and convert these to zero-based indexing.

kgryte
kgryte reviewed Aug 7, 2025
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Comment thread lib/node_modules/@stdlib/lapack/base/dorm2r/lib/base.js
Comment on lines +120 to +123
mi = M - i + 1;
ic = i;
} else {
ni = N - i + 1;

@kgryte kgryte Aug 7, 2025 •
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Suggested change
mi = M - i + 1;
ic = i;
} else {
ni = N - i + 1;
mi = M - i;
ic = i;
} else {
ni = N - i;

kgryte
kgryte reviewed Aug 7, 2025
View reviewed changes
Comment thread lib/node_modules/@stdlib/lapack/base/dorm2r/lib/base.js Outdated
aOffset = offsetA + ( ( i - 1 ) * strideA1 ) + ( ( i - 1 ) * strideA2 );
cOffset = offsetC + ( (ic-1) * strideC1 ) + ( (jc-1) * strideC2 );

dlarf1f( side, mi, ni, A, strideA1, aOffset, tauVal, C, strideC1, strideC2, cOffset, work, strideWork, offsetWork ); // eslint-disable-line max-len

@kgryte kgryte Aug 7, 2025

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What seems to be off is the stride of A passed to dlarf1f. I believe you need to take into account the transpose.

kgryte
kgryte reviewed Aug 7, 2025
View reviewed changes
Comment thread lib/node_modules/@stdlib/lapack/base/dorm2r/lib/base.js

tauVal = tau[ offsetTau + ( ( i - 1 ) * strideTau ) ];
aOffset = offsetA + ( ( i - 1 ) * strideA1 ) + ( ( i - 1 ) * strideA2 );
cOffset = offsetC + ( (ic-1) * strideC1 ) + ( (jc-1) * strideC2 );

@kgryte kgryte Aug 7, 2025

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You may also need to swap the C strides based on the transpose operation.

@aayush0325 aayush0325 mentioned this pull request Aug 12, 2025
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@kgryte
kgryte self-requested a review August 13, 2025 17:12
@stdlib-bot stdlib-bot added the Needs Review A pull request which needs code review. label Aug 13, 2025
@Aniket-SS Aniket-SS mentioned this pull request Mar 31, 2026
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aayush0325 commented Jul 30, 2026

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/stdlib merge

@stdlib-bot stdlib-bot added the bot: In Progress Pull request is currently awaiting automation. label Jul 30, 2026
@stdlib-bot stdlib-bot removed the bot: In Progress Pull request is currently awaiting automation. label Jul 30, 2026
@aayush0325
chore: use merged dlarf1f implementation
13bb8de 
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chore: cleanup
228dddb 
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bench: fix overflowing benchmarks
cad6b4e 
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@aayush0325
aayush0325 marked this pull request as ready for review August 2, 2026 06:39
@aayush0325
aayush0325 requested a review from a team August 2, 2026 06:39

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