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<?php |
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namespace Np\core; |
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/** |
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* Lapack |
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* |
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* php interface for LAPACK |
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* |
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* @package Np |
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* @category Scientific Computing |
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* @author ghost (Shubham Chaudhary) |
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* @email [email protected] |
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* @copyright (c) 2020-2021, Shubham Chaudhary |
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*/ |
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class lapack { |
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const ROW_MAJOR = 101, COL_MAJOR = 102; |
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const Upper = 'U', Lower = 'L'; |
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const INCR = 'I', DECR = 'D'; |
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public static $ffi_lapack; |
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public static function init() { |
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if (is_null(self::$ffi_lapack)) { |
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self::$ffi_lapack = \FFI::scope('lapack'); |
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} |
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return self::$ffi_lapack; |
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} |
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/** |
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* |
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* @param \Np\matrix $mat |
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* @param \Np\vector $ipiv |
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* @param int $matLayout |
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* @return int |
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*/ |
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public static function getrf(\Np\matrix $mat, \Np\vector $ipiv, int $matLayout = self::ROW_MAJOR) { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dgetrf($matLayout, $mat->row, $mat->col, $mat->data, $mat->row, $ipiv->data); |
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} |
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/** |
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* |
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* @param \Np\matrix $mat |
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* @param \Np\vector $ipiv |
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* @param int $matLayout |
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* @return int |
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*/ |
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public static function getri(\Np\matrix $mat, \Np\vector $ipiv, int $matLayout = self::ROW_MAJOR) { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dgetri($matLayout, $mat->row, $mat->data, $mat->row, $ipiv->data); |
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} |
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/** |
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* |
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* @param \Np\matrix $mat |
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* @param \Np\vector $s |
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* @param \Np\matrix $u |
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* @param \Np\matrix $vt |
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* @param int $matLayout |
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* @return int |
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*/ |
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public static function gesdd(\Np\matrix $mat, \Np\vector $s, \Np\matrix $u, \Np\matrix $vt, int $matLayout = self::ROW_MAJOR) { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dgesdd($matLayout, 'A', $mat->row, $mat->col, $mat->data, $mat->col, $s->data, $u->data, $mat->row, $vt->data, $mat->col); |
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} |
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/** |
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* |
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* @param \Np\matrix $mat |
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* @param string $uplo |
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* @param int $matLayout |
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* @return int |
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*/ |
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public static function potrf(\Np\matrix $mat, $uplo = self::Lower, int $matLayout = self::ROW_MAJOR) { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dpotrf($matLayout, $uplo, $mat->col, $mat->data, $mat->col); |
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} |
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/** |
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* |
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* @param \Np\matrix $mat |
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* @param \Np\vector $wr |
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* @param \Np\vector $wi |
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* @param \Np\matrix $vr |
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* @param int $matLayout |
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* @return int |
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*/ |
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public static function geev(\Np\matrix $mat, \Np\vector $wr, \Np\vector $wi, \Np\matrix $vr, int $matLayout = self::ROW_MAJOR) { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dgeev($matLayout, 'N', 'V', $mat->col, $mat->data, $mat->col, $wr->data, $wi->data, null, $mat->col, $vr->data, $mat->col); |
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} |
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/** |
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* |
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* @param \Np\matrix $mat |
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* @param \Np\vector $wr |
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* @param int $matLayout |
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* @return int |
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*/ |
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public static function syev(\Np\matrix $mat, \Np\vector $wr, int $matLayout = self::ROW_MAJOR) { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dsyev($matLayout, 'V', 'U', $mat->col, $mat->data, $mat->col, $wr->data); |
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} |
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/** |
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* |
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* @param string $norm |
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* @param \Np\matrix $m |
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* @param int $matLayout |
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* @return \FFI\CData |
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*/ |
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public static function lange(string $norm, \Np\matrix $m, int $matLayout = self::ROW_MAJOR) { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dlange($matLayout, $norm, $m->row, $m->col, $m->data, $m->col); |
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} |
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/** |
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* |
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* @param \Np\vector $v |
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* @param $id |
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* @return \FFI\CData |
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*/ |
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public static function sort(\Np\vector $v, $id = self::INCR) { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dlasrt($id, $v->col, $v->data); |
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} |
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/** |
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* |
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* The routine solves overdetermined or underdetermined real linear systems |
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* involving an m-by-n matrix M, or its transpose, using a QR or LQ |
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* factorization of M. It is assumed that M has full rank. |
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* @param \Np\matrix $m |
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* @param \Np\matrix|\Np\vector $b |
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* @param int $matLayout |
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* @param string $trans |
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* @return type |
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*/ |
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public static function gels(\Np\matrix $m, \Np\matrix|\Np\vector $b, int $matLayout = self::ROW_MAJOR, string $trans = 'N') { |
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self::init(); |
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return self::$ffi_lapack->LAPACKE_dgels($matLayout, $trans, $m->row, $m->col, $b->col, $m->data, |
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$m->col, $b->data, $b->col); |
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} |
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} |
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ghostjat /
Np
