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# LAPACK
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> Base (i.e., lower-level) linear algebra package (LAPACK) routines.
## Usage
```javascript
var lapack = require( '@stdlib/lapack-base' );
```
#### lapack
Namespace for "base" (i.e., lower-level) linear algebra package (LAPACK) routines.
```javascript
var o = lapack;
// returns {...}
```
The namespace contains the following:
- [`clacgv( N, cx, strideCX )`][@stdlib/lapack/base/clacgv]: conjugate each element in a single-precision complex floating-point vector.
- [`clacpy( order, uplo, M, N, A, LDA, B, LDB )`][@stdlib/lapack/base/clacpy]: copy all or part of a matrix `A` to another matrix `B`.
- [`claset( order, uplo, M, N, alpha, beta, A, LDA )`][@stdlib/lapack/base/claset]: set the off-diagonal elements and the diagonal elements of a single-precision complex floating-point matrix to specified values.
- [`claswp( N, A, LDA, k1, k2, IPIV, incx )`][@stdlib/lapack/base/claswp]: perform a series of row interchanges on an input matrix.
- [`crot( N, cx, strideCX, cy, strideCY, c, s )`][@stdlib/lapack/base/crot]: apply a plane rotation with real cosine and complex sine to a pair of single-precision complex floating-point vectors.
- [`dgetrans( order, M, N, A, LDA, out, LDO )`][@stdlib/lapack/base/dge-trans]: convert a matrix from row-major layout to column-major layout or vice versa.
- [`dgttrf( N, DL, D, DU, DU2, IPIV )`][@stdlib/lapack/base/dgttrf]: compute an `LU` factorization of a real tridiagonal matrix `A` using elimination with partial pivoting and row interchanges.
- [`dlacpy( order, uplo, M, N, A, LDA, B, LDB )`][@stdlib/lapack/base/dlacpy]: copy all or part of a matrix `A` to another matrix `B`.
- [`dladiv( a, b, c, d, P, Q )`][@stdlib/lapack/base/dladiv]: divide two double-precision complex floating-point numbers in real arithmetic.
- [`dlamch( cmach )`][@stdlib/lapack/base/dlamch]: determine double-precision floating-point machine parameters.
- [`dlapy2( x, y )`][@stdlib/lapack/base/dlapy2]: LAPACK routine to calculate `sqrt(x^2 + y^2)` in a manner which doesn't cause unnecessary overflow.
- [`dlapy3( x, y, z )`][@stdlib/lapack/base/dlapy3]: LAPACK routine to calculate `sqrt(x^2 + y^2 + z^2)` in a manner which doesn't cause unnecessary overflow.
- [`dlarf1f( order, side, M, N, V, strideV, tau, C, LDC, work )`][@stdlib/lapack/base/dlarf1f]: apply a real elementary reflector `H = I - tau * v * v^T` to a real M by N matrix `C`.
- [`dlaset( order, uplo, M, N, alpha, beta, A, LDA )`][@stdlib/lapack/base/dlaset]: set the off-diagonal elements and the diagonal elements of a double-precision floating-point matrix to specified values.
- [`dlassq( N, X, strideX, scale, sumsq )`][@stdlib/lapack/base/dlassq]: return an updated sum of squares represented in scaled form.
- [`dlaswp( N, A, LDA, k1, k2, IPIV, incx )`][@stdlib/lapack/base/dlaswp]: perform a series of row interchanges on an input matrix.
- [`dpttrf( N, D, E )`][@stdlib/lapack/base/dpttrf]: compute the `L * D * L^T` factorization of a real symmetric positive definite tridiagonal matrix `A`.
- [`iladlc( order, M, N, A, LDA )`][@stdlib/lapack/base/iladlc]: find the index of the last non-zero column in a matrix `A`.
- [`iladlr( order, M, N, A, LDA )`][@stdlib/lapack/base/iladlr]: find the index of the last non-zero row in a matrix `A`.
- [`sgetrans( order, M, N, A, LDA, out, LDO )`][@stdlib/lapack/base/sge-trans]: convert a matrix from row-major layout to column-major layout or vice versa.
- [`slacpy( order, uplo, M, N, A, LDA, B, LDB )`][@stdlib/lapack/base/slacpy]: copy all or part of a matrix `A` to another matrix `B`.
- [`slaswp( N, A, LDA, k1, k2, IPIV, incx )`][@stdlib/lapack/base/slaswp]: perform a series of row interchanges on an input matrix.
- [`spttrf( N, D, E )`][@stdlib/lapack/base/spttrf]: compute the `L * D * L^T` factorization of a real symmetric positive definite tridiagonal matrix `A`.
- [`zlacgv( N, zx, strideZX )`][@stdlib/lapack/base/zlacgv]: conjugate each element in a double-precision complex floating-point vector.
- [`zlacpy( order, uplo, M, N, A, LDA, B, LDB )`][@stdlib/lapack/base/zlacpy]: copy all or part of a matrix `A` to another matrix `B`.
- [`zlaset( order, uplo, M, N, alpha, beta, A, LDA )`][@stdlib/lapack/base/zlaset]: set the off-diagonal elements and the diagonal elements of a double-precision complex floating-point matrix to specified values.
- [`zlaswp( N, A, LDA, k1, k2, IPIV, incx )`][@stdlib/lapack/base/zlaswp]: perform a series of row interchanges on an input matrix.
- [`zrot( N, zx, strideX, zy, strideY, c, s )`][@stdlib/lapack/base/zrot]: apply a plane rotation with real cosine and complex sine to a pair of double-precision complex floating-point vectors.