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test: migrate stats/incr/mcovariance to ULP-based assertions #16168

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Merged
kgryte merged 1 commit into from
Oct 15, 2026
Merged

test: migrate stats/incr/mcovariance to ULP-based assertions #16168

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47 changes: 7 additions & 40 deletions lib/node_modules/@stdlib/stats/incr/mcovariance/test/test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,11 +21,10 @@
// MODULES //

var tape = require( 'tape' );
var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
var randu = require( '@stdlib/random/base/randu' );
var abs = require( '@stdlib/math/base/special/abs' );
var pow = require( '@stdlib/math/base/special/pow' );
var isnan = require( '@stdlib/math/base/assert/is-nan' );
var EPS = require( '@stdlib/constants/float64/eps' );
var zeros = require( '@stdlib/array/base/zeros' );
var incrmcovariance = require( './../lib' );

Expand Down Expand Up @@ -263,12 +262,10 @@ tape( 'the function returns an accumulator function (known means)', function tes
tape( 'the accumulator function computes a moving unbiased sample covariance incrementally', function test( t ) {
var expected;
var actual;
var delta;
var means;
var data;
var acc;
var arr;
var tol;
var d;
var N;
var M;
Expand All @@ -278,7 +275,7 @@ tape( 'the accumulator function computes a moving unbiased sample covariance inc

N = 10;
M = 100;
data = datasets( N, M, randu.seed );
data = datasets( N, M, 123456 );

// Define the window size:
W = 10;
Expand All @@ -297,13 +294,7 @@ tape( 'the accumulator function computes a moving unbiased sample covariance inc
}
means = mean( [ 0.0, 0.0 ], arr );
expected = covariance( arr, means[ 0 ], means[ 1 ], false );
if ( actual === expected ) {
t.strictEqual( actual, expected, 'returns expected value. dataset: '+i+'. window: '+j+'.' );
} else {
delta = abs( actual - expected );
tol = 5.0e5 * EPS * abs( expected );
t.strictEqual( delta < tol, true, 'dataset: '+i+'. window: '+j+'. expected: '+expected+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
}
t.strictEqual( isAlmostSameValue( actual, expected, 8192 ), true, 'returns expected value' );
}
}
t.end();
Expand All @@ -313,11 +304,9 @@ tape( 'the accumulator function computes a moving unbiased sample covariance inc
var expected;
var actual;
var means;
var delta;
var data;
var acc;
var arr;
var tol;
var d;
var N;
var M;
Expand All @@ -327,7 +316,7 @@ tape( 'the accumulator function computes a moving unbiased sample covariance inc

N = 10;
M = 100;
data = datasets( N, M, randu.seed );
data = datasets( N, M, 123456 );

// Define the window size:
W = 10;
Expand All @@ -345,13 +334,7 @@ tape( 'the accumulator function computes a moving unbiased sample covariance inc
arr = d.slice( j-W+1, j+1 );
}
expected = covariance( arr, means[ 0 ], means[ 1 ], true );
if ( actual === expected ) {
t.strictEqual( actual, expected, 'returns expected value. dataset: '+i+'. window: '+j+'.' );
} else {
delta = abs( actual - expected );
tol = 5.0e5 * EPS * abs( expected );
t.strictEqual( delta < tol, true, 'dataset: '+i+'. window: '+j+'. expected: '+expected+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
}
t.strictEqual( isAlmostSameValue( actual, expected, 1674 ), true, 'returns expected value' );
}
}
t.end();
Expand All @@ -361,9 +344,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
var expected;
var actual;
var means;
var delta;
var data;
var tol;
var acc;
var W;
var N;
Expand Down Expand Up @@ -392,13 +373,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
}
means = mean( [ 0.0, 0.0 ], d );
expected = covariance( d, means[ 0 ], means[ 1 ], false );
if ( actual === expected ) {
t.strictEqual( actual, expected, 'returns expected value. window: '+i+'.' );
} else {
delta = abs( actual - expected );
tol = 1.5 * EPS * abs( expected );
t.strictEqual( delta < tol, true, 'window: '+i+'. expected: '+expected+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
}
t.strictEqual( isAlmostSameValue( actual, expected, 2 ), true, 'returns expected value' );
}
t.end();
});
Expand All @@ -407,9 +382,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
var expected;
var actual;
var means;
var delta;
var data;
var tol;
var acc;
var W;
var N;
Expand Down Expand Up @@ -438,13 +411,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
d = data.slice( i-W+1, i+1 );
}
expected = covariance( d, means[ 0 ], means[ 1 ], true );
if ( actual === expected ) {
t.strictEqual( actual, expected, 'returns expected value. window: '+i+'.' );
} else {
delta = abs( actual - expected );
tol = EPS * abs( expected );
t.strictEqual( delta < tol, true, 'window: '+i+'. expected: '+expected+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
}
t.strictEqual( isAlmostSameValue( actual, expected, 0 ), true, 'returns expected value' );
}
t.end();
});
Expand Down
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