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test: add tests for negative strides
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‎lib/node_modules/@stdlib/lapack/base/dgebal/test/test.ndarray.js‎

Lines changed: 147 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -16,7 +16,7 @@
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* limitations under the License.
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*/
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/* eslint-disable array-element-newline */
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/* eslint-disable array-element-newline, max-lines */
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'use strict';
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@@ -1103,3 +1103,149 @@ tape( 'the function returns expected values for job = both with complex input (c
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t.deepEqual( scale, expectedScale, 'returns expected value' );
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t.end();
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});
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tape( 'the function returns expected values for job = scale with zero norm (row-major) (negative strides)', function test( t ) {
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var expectedScale;
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var expectedOut;
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var expectedA;
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var scale;
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var info;
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var out;
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var A;
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A = new Float64Array([
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6.0, 0.0, 3.0,
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5.0, 0.0, 2.0,
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4.0, 0.0, 1.0
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]);
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out = new Float64Array( 2 );
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scale = new Float64Array( 3 );
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expectedOut = new Float64Array( [ 2.0, 0.0 ] );
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expectedScale = new Float64Array( [ 1.0, 1.0, 1.0 ] );
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expectedA = new Float64Array([
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6.0, 0.0, 3.0,
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5.0, 0.0, 2.0,
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4.0, 0.0, 1.0
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]);
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info = dgebal( 'scale', 3, A, -3, -1, 8, out, -1, 1, scale, -1, 2 );
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t.strictEqual( info, 0, 'returns expected value' );
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t.deepEqual( out, expectedOut, 'returns expected value' );
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t.deepEqual( A, expectedA, 'returns expected value' );
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t.deepEqual( scale, expectedScale, 'returns expected value' );
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t.end();
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});
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tape( 'the function returns expected values for job = scale with zero norm (column-major) (negative strides)', function test( t ) {
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var expectedScale;
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var expectedOut;
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var expectedA;
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var scale;
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var info;
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var out;
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var A;
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A = new Float64Array([
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1.0, 2.0, 3.0,
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0.0, 0.0, 0.0,
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4.0, 5.0, 6.0
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]);
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A = new Float64Array([
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6.0, 5.0, 4.0,
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0.0, 0.0, 0.0,
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3.0, 2.0, 1.0
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]);
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out = new Float64Array( 2 );
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scale = new Float64Array( 3 );
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expectedOut = new Float64Array( [ 2.0, 0.0 ] );
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expectedScale = new Float64Array( [ 1.0, 1.0, 1.0 ] );
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expectedA = new Float64Array([
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1.0, 2.0, 3.0,
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0.0, 0.0, 0.0,
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4.0, 5.0, 6.0
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]);
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expectedA = new Float64Array([
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6.0, 5.0, 4.0,
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0.0, 0.0, 0.0,
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3.0, 2.0, 1.0
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]);
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info = dgebal( 'scale', 3, A, -1, -3, 8, out, -1, 1, scale, -1, 2 );
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t.strictEqual( info, 0, 'returns expected value' );
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t.deepEqual( out, expectedOut, 'returns expected value' );
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t.deepEqual( A, expectedA, 'returns expected value' );
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t.deepEqual( scale, expectedScale, 'returns expected value' );
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t.end();
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});
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tape( 'the function returns expected values for job = scale with small values (row-major) (negative strides)', function test( t ) {
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var expectedScale;
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var expectedOut;
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var expectedA;
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var scale;
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var info;
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var out;
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var A;
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A = new Float64Array([
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4.0e4, 2.0, 1.0, 4.0e-4,
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3.0e4, 2.0, 1.0, 3.0e-4,
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2.0e4, 2.0, 1.0, 2.0e-4,
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1.0e4, 2.0, 1.0, 1.0e-4
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]);
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out = new Float64Array( 2 );
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scale = new Float64Array( 4 );
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expectedOut = new Float64Array( [ 3.0, 0.0 ] );
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expectedScale = new Float64Array( [ 1.0, 128.0, 128.0, 4096.0 ] );
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expectedA = new Float64Array([
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4.0e4, 2.56e2, 1.28e2, 1.6384,
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2.34375e2, 2.0, 1.0, 9.6e-3,
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1.5625e2, 2.0, 1.0, 6.4e-3,
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2.44140625, 6.25e-2, 3.125e-2, 1.0e-4
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]);
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info = dgebal( 'scale', 4, A, -4, -1, 15, out, -1, 1, scale, -1, 3 );
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t.strictEqual( info, 0, 'returns expected value' );
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t.deepEqual( out, expectedOut, 'returns expected value' );
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t.deepEqual( A, expectedA, 'returns expected value' );
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t.deepEqual( scale, expectedScale, 'returns expected value' );
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t.end();
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});
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tape( 'the function returns expected values for job = scale with small values (column-major)', function test( t ) {
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var expectedScale;
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var expectedOut;
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var expectedA;
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var scale;
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var info;
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var out;
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var A;
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A = new Float64Array([
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4.0e4, 3.0e4, 2.0e4, 1.0e4,
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2.0, 2.0, 2.0, 2.0,
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1.0, 1.0, 1.0, 1.0,
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4.0e-4, 3.0e-4, 2.0e-4, 1.0e-4
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]);
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out = new Float64Array( 2 );
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scale = new Float64Array( 4 );
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expectedOut = new Float64Array( [ 3.0, 0.0 ] );
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expectedScale = new Float64Array( [ 1.0, 128.0, 128.0, 4096.0 ] );
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expectedA = new Float64Array([
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4.0e4, 2.34375e2, 1.5625e2, 2.44140625,
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2.56e2, 2.0, 2.0, 6.25e-2,
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1.28e2, 1.0, 1.0, 3.125e-2,
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1.6384, 9.6e-3, 6.4e-3, 1.0e-4
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]);
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info = dgebal( 'scale', 4, A, -1, -4, 15, out, -1, 1, scale, -1, 3 );
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t.strictEqual( info, 0, 'returns expected value' );
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t.deepEqual( out, expectedOut, 'returns expected value' );
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t.deepEqual( A, expectedA, 'returns expected value' );
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t.deepEqual( scale, expectedScale, 'returns expected value' );
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t.end();
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});

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