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test: migrate math/base/special/betaincinv to ULP-based testing #11716

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test: migrate math/base/special/betaincinv to ULP-based testing #11716

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23 changes: 3 additions & 20 deletions lib/node_modules/@stdlib/math/base/special/betaincinv/test/test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,10 +22,9 @@

var tape = require( 'tape' );
var isnan = require( '@stdlib/math/base/assert/is-nan' );
var abs = require( '@stdlib/math/base/special/abs' );
var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
var PINF = require( '@stdlib/constants/float64/pinf' );
var NINF = require( '@stdlib/constants/float64/ninf' );
var EPS = require( '@stdlib/constants/float64/eps' );
var betaincinv = require( './../lib' );


Expand Down Expand Up @@ -121,42 +120,26 @@ tape( 'if provided a nonpositive `b`, the function returns `NaN`', function test

tape( 'the function evaluates the inverse of the lower regularized incomplete beta function', function test( t ) {
var expected;
var delta;
var tol;
var i;
var y;

expected = lowerRegularized;
for ( i = 0; i < x.length; i++ ) {
y = betaincinv( x[i], a[i], b[i] );
if ( y === expected[i] ) {
t.strictEqual( y, expected[i], 'x: '+x[i]+', y: '+y+'. a: '+a[i]+'. b: '+b[i]+', expected: '+expected[i] );
} else {
delta = abs( y - expected[ i ] );
tol = 15.0 * EPS * abs( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. a: '+a[i]+'. b: '+b[i]+'. y: '+y+'. E: '+expected[i]+'. Δ: '+delta+'. tol: '+tol );
}
t.strictEqual(isAlmostSameValue( y, expected[ i ], 24 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the inverse of the upper regularized incomplete beta function', function test( t ) {
var expected;
var delta;
var tol;
var i;
var y;

expected = upperRegularized;
for ( i = 0; i < x.length; i++ ) {
y = betaincinv( x[i], a[i], b[i], true );
if ( y === expected[i] ) {
t.strictEqual( y, expected[i], 'x: '+x[i]+', y: '+y+'. a: '+a[i]+'. b: '+b[i]+', expected: '+expected[i] );
} else {
delta = abs( y - expected[ i ] );
tol = 15.0 * EPS * abs( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. a: '+a[i]+'. b: '+b[i]+'. y: '+y+'. E: '+expected[i]+'. Δ: '+delta+'. tol: '+tol );
}
t.strictEqual(isAlmostSameValue( y, expected[ i ], 16 ), true, 'returns expected value' );
}
t.end();
});