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feat: add lapack/base/dptcon #2772

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Towards #2464.

Description

What is the purpose of this pull request?

This pull request adds JS implementation for lapack/base/dptcon.

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@Pranavchiku Pranavchiku added Feature Issue or pull request for adding a new feature. Base Issue or pull requests related to "low-level" functionality oriented toward library consumers. JavaScript Issue involves or relates to JavaScript. LAPACK Issue or pull request related to the Linear Algebra Package (LAPACK). labels Aug 10, 2024
@Pranavchiku Pranavchiku marked this pull request as ready for review August 10, 2024 11:20
// Solve `D*M(L)^T*x = b`.
work[ offsetW + ( ( N - 1 ) * strideW ) ] /= D[ offsetD + ( ( N - 1 ) * strideD ) ];
for ( i = N - 2; i >= 0; i-- ) {
work[ offsetW + ( i * strideW ) ] = ( work[ offsetW + ( i * strideW ) ] / D[ offsetD + ( i * strideD ) ] ) + ( work[ offsetW + ( ( i + 1 ) * strideW ) ] * abs( E[ offsetE + ( i * strideE ) ] ) );
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Use temp pointer variables to simplify these expressions here and elsewhere.

t.end();
});

tape( 'the function allows accessing elements from a strided array with different offset and order', function test( t ) {
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You need to provide more systematic and robust tests.

@kgryte kgryte added the Needs Changes Pull request which needs changes before being merged. label Sep 17, 2024
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Base Issue or pull requests related to "low-level" functionality oriented toward library consumers. Feature Issue or pull request for adding a new feature. JavaScript Issue involves or relates to JavaScript. LAPACK Issue or pull request related to the Linear Algebra Package (LAPACK). Needs Changes Pull request which needs changes before being merged.
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2 participants