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Aug 13, 2025
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test: use ulpdiff for floating-point comparisons #7871

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143 changes: 15 additions & 128 deletions lib/node_modules/@stdlib/math/base/special/tanf/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 isnanf = require( '@stdlib/math/base/assert/is-nanf' );
var absf = require( '@stdlib/math/base/special/absf' );
var f32 = require( '@stdlib/number/float64/base/to-float32' );
var ulpdiff = require( '@stdlib/number/float32/base/ulp-difference' );
var PI = require( '@stdlib/constants/float32/pi' );
var EPS = require( '@stdlib/constants/float32/eps' );
var PINF = require( '@stdlib/constants/float32/pinf' );
var NINF = require( '@stdlib/constants/float32/ninf' );
var isNegativeZerof = require( '@stdlib/math/base/assert/is-negative-zerof' );
Expand Down Expand Up @@ -61,8 +60,6 @@ tape( 'main export is a function', function test( t ) {

tape( 'the function computes the tangent (huge negative values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -74,21 +71,13 @@ tape( 'the function computes the tangent (huge negative values)', function test(
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (huge positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -100,21 +89,13 @@ tape( 'the function computes the tangent (huge positive values)', function test(
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (very large positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -126,21 +107,13 @@ tape( 'the function computes the tangent (very large positive values)', function
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (very large negative values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -152,21 +125,13 @@ tape( 'the function computes the tangent (very large negative values)', function
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (large positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -178,21 +143,13 @@ tape( 'the function computes the tangent (large positive values)', function test
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (large negative values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -204,21 +161,13 @@ tape( 'the function computes the tangent (large negative values)', function test
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (medium positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -230,21 +179,13 @@ tape( 'the function computes the tangent (medium positive values)', function tes
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (medium negative values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -256,21 +197,13 @@ tape( 'the function computes the tangent (medium negative values)', function tes
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (small positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -282,21 +215,13 @@ tape( 'the function computes the tangent (small positive values)', function test
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (small negative values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -308,21 +233,13 @@ tape( 'the function computes the tangent (small negative values)', function test
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (smaller values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -334,21 +251,13 @@ tape( 'the function computes the tangent (smaller values)', function test( t ) {
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( ulpdiff( y, expected[ i ] ) <= 1, true, 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (tiny positive values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -360,21 +269,13 @@ tape( 'the function computes the tangent (tiny positive values)', function test(
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( y, expected[ i ], 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (tiny negative values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -386,21 +287,13 @@ tape( 'the function computes the tangent (tiny negative values)', function test(
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( y, expected[ i ], 'returns expected value' );
}
t.end();
});

tape( 'the function computes the tangent (subnormal values)', function test( t ) {
var expected;
var delta;
var tol;
var x;
var y;
var i;
Expand All @@ -412,13 +305,7 @@ tape( 'the function computes the tangent (subnormal values)', function test( t )
x[ i ] = f32( x[ i ] );
expected[ i ] = f32( expected[ i ] );
y = tanf( x[ i ] );
if ( y === expected[ i ] ) {
t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
} else {
delta = absf( y - expected[ i ] );
tol = EPS * absf( expected[ i ] );
t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
}
t.strictEqual( y, expected[ i ], 'returns expected value' );
}

t.end();
Expand Down
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