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| 1 | +/** |
| 2 | +* @license Apache-2.0 |
| 3 | +* |
| 4 | +* Copyright (c) 2025 The Stdlib Authors. |
| 5 | +* |
| 6 | +* Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | +* you may not use this file except in compliance with the License. |
| 8 | +* You may obtain a copy of the License at |
| 9 | +* |
| 10 | +* http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | +* |
| 12 | +* Unless required by applicable law or agreed to in writing, software |
| 13 | +* distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | +* See the License for the specific language governing permissions and |
| 16 | +* limitations under the License. |
| 17 | +*/ |
| 18 | + |
| 19 | +'use strict'; |
| 20 | + |
| 21 | +// MODULES // |
| 22 | + |
| 23 | +var tape = require( 'tape' ); |
| 24 | +var isNumber = require( '@stdlib/assert-is-number' ).isPrimitive; |
| 25 | +var erfcxY100 = require( './../lib/erfcx_y100.js' ); |
| 26 | + |
| 27 | + |
| 28 | +// TESTS // |
| 29 | + |
| 30 | +tape( 'main export is a function', function test( t ) { |
| 31 | + t.ok( true, __filename ); |
| 32 | + t.strictEqual( typeof erfcxY100, 'function', 'main export is a function' ); |
| 33 | + t.end(); |
| 34 | +}); |
| 35 | + |
| 36 | +tape( 'the function evaluates erfcxY100 for values that select polynomial p22', function test( t ) { |
| 37 | + var v; |
| 38 | + |
| 39 | + // y100 in [22, 23) selects p22 |
| 40 | + v = erfcxY100( 22.5 ); |
| 41 | + t.strictEqual( isNumber( v ), true, 'returns expected value' ); |
| 42 | + |
| 43 | + t.end(); |
| 44 | +}); |
| 45 | + |
| 46 | +tape( 'the function evaluates erfcxY100 for values that select polynomial p23', function test( t ) { |
| 47 | + var v; |
| 48 | + |
| 49 | + // y100 in [23, 24) selects p23 |
| 50 | + v = erfcxY100( 23.5 ); |
| 51 | + t.strictEqual( isNumber( v ), true, 'returns expected value' ); |
| 52 | + |
| 53 | + t.end(); |
| 54 | +}); |
| 55 | + |
| 56 | +tape( 'the function evaluates erfcxY100 for values that select polynomial p24', function test( t ) { |
| 57 | + var v; |
| 58 | + |
| 59 | + // y100 in [24, 25) selects p24 |
| 60 | + v = erfcxY100( 24.5 ); |
| 61 | + t.strictEqual( isNumber( v ), true, 'returns expected value' ); |
| 62 | + |
| 63 | + t.end(); |
| 64 | +}); |
| 65 | + |
| 66 | +tape( 'the function evaluates erfcxY100 for values that select polynomial p25', function test( t ) { |
| 67 | + var v; |
| 68 | + |
| 69 | + // y100 in [25, 26) selects p25 |
| 70 | + v = erfcxY100( 25.5 ); |
| 71 | + t.strictEqual( isNumber( v ), true, 'returns expected value' ); |
| 72 | + |
| 73 | + t.end(); |
| 74 | +}); |
| 75 | + |
| 76 | +tape( 'the function evaluates erfcxY100 for values that select polynomial p26', function test( t ) { |
| 77 | + var v; |
| 78 | + |
| 79 | + // y100 in [26, 27) selects p26 |
| 80 | + v = erfcxY100( 26.5 ); |
| 81 | + t.strictEqual( isNumber( v ), true, 'returns expected value' ); |
| 82 | + |
| 83 | + t.end(); |
| 84 | +}); |
| 85 | + |
| 86 | +tape( 'the function evaluates erfcxY100 for values that select polynomial p27', function test( t ) { |
| 87 | + var v; |
| 88 | + |
| 89 | + // y100 in [27, 28) selects p27 |
| 90 | + v = erfcxY100( 27.5 ); |
| 91 | + t.strictEqual( isNumber( v ), true, 'returns expected value' ); |
| 92 | + |
| 93 | + t.end(); |
| 94 | +}); |
| 95 | + |
| 96 | +tape( 'the function evaluates erfcxY100 for all polynomial ranges', function test( t ) { |
| 97 | + var i; |
| 98 | + var v; |
| 99 | + |
| 100 | + // Test all 101 polynomials (p0 through p100) by testing one value in each range |
| 101 | + for ( i = 0; i <= 100; i++ ) { |
| 102 | + v = erfcxY100( i + 0.5 ); |
| 103 | + t.strictEqual( isNumber( v ), true, 'returns a number for y100=' + (i + 0.5) ); |
| 104 | + } |
| 105 | + |
| 106 | + t.end(); |
| 107 | +}); |
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