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test: migrate math/base/special/lnf to ULP difference based testing #13773

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Merged
kgryte merged 1 commit into from
Jul 30, 2026
Merged

test: migrate math/base/special/lnf to ULP difference based testing #13773

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73 changes: 8 additions & 65 deletions lib/node_modules/@stdlib/math/base/special/lnf/test/test.js
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -24,8 +24,7 @@ var tape = require( 'tape' );
var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
var PINF = require( '@stdlib/constants/float32/pinf' );
var NINF = require( '@stdlib/constants/float32/ninf' );
var EPS = require( '@stdlib/constants/float32/eps' );
var abs = require( '@stdlib/math/base/special/abs' );
var isAlmostSameValue = require( '@stdlib/number/float32/base/assert/is-almost-same-value' );
var float64ToFloat32 = require( '@stdlib/number/float64/base/to-float32' );
var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
var lnf = require( './../lib' );
Expand All @@ -52,8 +51,6 @@ tape( 'main export is a function', function test( t ) {

tape( 'the function evaluates the natural logarithm of `x` (very large positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -64,21 +61,13 @@ tape( 'the function evaluates the natural logarithm of `x` (very large positive
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (large positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -89,21 +78,13 @@ tape( 'the function evaluates the natural logarithm of `x` (large positive value
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (medium positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -114,21 +95,13 @@ tape( 'the function evaluates the natural logarithm of `x` (medium positive valu
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (small positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -139,21 +112,13 @@ tape( 'the function evaluates the natural logarithm of `x` (small positive value
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = 106.0 * EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 174 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (smaller positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -164,21 +129,13 @@ tape( 'the function evaluates the natural logarithm of `x` (smaller positive val
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = 1.8 * EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 2 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (tiny positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -189,21 +146,13 @@ tape( 'the function evaluates the natural logarithm of `x` (tiny positive values
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (subnormal values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -214,13 +163,7 @@ tape( 'the function evaluates the natural logarithm of `x` (subnormal values)',
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = 7.0 * EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 10 ), true, 'returns expected value' );
}
t.end();
});
Expand Down
73 changes: 8 additions & 65 deletions lib/node_modules/@stdlib/math/base/special/lnf/test/test.native.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -25,8 +25,7 @@ var tape = require( 'tape' );
var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
var PINF = require( '@stdlib/constants/float32/pinf' );
var NINF = require( '@stdlib/constants/float32/ninf' );
var EPS = require( '@stdlib/constants/float32/eps' );
var abs = require( '@stdlib/math/base/special/abs' );
var isAlmostSameValue = require( '@stdlib/number/float32/base/assert/is-almost-same-value' );
var float64ToFloat32 = require( '@stdlib/number/float64/base/to-float32' );
var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
var tryRequire = require( '@stdlib/utils/try-require' );
Expand Down Expand Up @@ -61,8 +60,6 @@ tape( 'main export is a function', opts, function test( t ) {

tape( 'the function evaluates the natural logarithm of `x` (very large positive values)', opts, function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -73,21 +70,13 @@ tape( 'the function evaluates the natural logarithm of `x` (very large positive
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (large positive values)', opts, function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -98,21 +87,13 @@ tape( 'the function evaluates the natural logarithm of `x` (large positive value
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (medium positive values)', opts, function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -123,21 +104,13 @@ tape( 'the function evaluates the natural logarithm of `x` (medium positive valu
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (small positive values)', opts, function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -148,21 +121,13 @@ tape( 'the function evaluates the natural logarithm of `x` (small positive value
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = 106.0 * EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 174 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (smaller positive values)', opts, function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -173,21 +138,13 @@ tape( 'the function evaluates the natural logarithm of `x` (smaller positive val
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = 1.8 * EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 2 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (tiny positive values)', opts, function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -198,21 +155,13 @@ tape( 'the function evaluates the natural logarithm of `x` (tiny positive values
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' );
}
t.end();
});

tape( 'the function evaluates the natural logarithm of `x` (subnormal values)', opts, function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -223,13 +172,7 @@ tape( 'the function evaluates the natural logarithm of `x` (subnormal values)',
for ( i = 0; i < x.length; i++ ) {
y = lnf( x[i] );
e = float64ToFloat32( expected[ i ] );
if ( y === e ) {
t.strictEqual( y, e, 'x: '+x[i]+', y: '+y+', expected: '+e );
} else {
delta = abs( y - e );
tol = 7.0 * EPS * abs( e );
t.strictEqual( delta <= tol, true, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+e+'. Δ: '+delta+'. Tolerance: '+tol+'.' );
}
t.strictEqual( isAlmostSameValue( y, e, 10 ), true, 'returns expected value' );
}
t.end();
});
Expand Down