@bluemath/linalg/lib/lapack/geev.js

Bluemath Linear Algebra library

"use strict";
/*

Copyright (C) 2017 Jayesh Salvi, Blue Math Software Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

*/
Object.defineProperty(exports, "__esModule", { value: true });
var lapacklite = require("../../ext/lapacklite");
var em = lapacklite.Module;
var common_1 = require("./common");
/**
 * @hidden
 */
function geev_internal(mA, n, compleft, compright, numtype) {
    var fn = numtype === 'f32' ? common_1.sgeev_wrap : common_1.dgeev_wrap;
    var lda = Math.max(1, n);
    var ldvl = compleft ? n : 1;
    var ldvr = compright ? n : 1;
    var jobvl = compleft ? 'V' : 'N';
    var jobvr = compright ? 'V' : 'N';
    var pjobvl = common_1.defineEmVariable('i8', jobvl.charCodeAt(0));
    var pjobvr = common_1.defineEmVariable('i8', jobvr.charCodeAt(0));
    var pn = common_1.defineEmVariable('i32', n);
    var plda = common_1.defineEmVariable('i32', lda);
    var pldvl = common_1.defineEmVariable('i32', ldvl);
    var pldvr = common_1.defineEmVariable('i32', ldvr);
    var plwork = common_1.defineEmVariable('i32', -1);
    var pinfo = common_1.defineEmVariable('i32');
    var pA = common_1.defineEmArrayVariable(numtype, n * n, mA)[0];
    var _a = common_1.defineEmArrayVariable(numtype, compleft ? ldvl * n : 1), pVL = _a[0], VL = _a[1];
    var _b = common_1.defineEmArrayVariable(numtype, compright ? ldvr * n : 1), pVR = _b[0], VR = _b[1];
    var _c = common_1.defineEmArrayVariable(numtype, n), pwr = _c[0], WR = _c[1];
    var _d = common_1.defineEmArrayVariable(numtype, n), pwi = _d[0], WI = _d[1];
    var pwork = common_1.defineEmArrayVariable(numtype, 1)[0];
    // work size query
    fn(pjobvl, pjobvr, pn, pA, plda, pwr, pwi, pVL, pldvl, pVR, pldvr, pwork, plwork, pinfo);
    var worksize = em.getValue(pwork, numtype === 'f32' ? 'float' : 'double');
    pwork = common_1.defineEmArrayVariable(numtype, worksize)[0];
    em.setValue(plwork, worksize, 'i32');
    fn(pjobvl, pjobvr, pn, pA, plda, pwr, pwi, pVL, pldvl, pVR, pldvr, pwork, plwork, pinfo);
    var info = em.getValue(pinfo, 'i32');
    if (info < 0) {
        throw new Error('Invalid argument (' + (-info) + ')');
    }
    if (info > 0) {
        throw new Error('Failed to compute all eigen values (' + info + ')');
    }
    return [WR, WI, VL, VR];
}
/**
 * @hidden
 */
function geev(A, n, compleft, compright) {
    if (A instanceof Float64Array) {
        return geev_internal(A, n, compleft, compright, 'f64');
    }
    else {
        return geev_internal(A, n, compleft, compright, 'f32');
    }
}
exports.geev = geev;