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/*
* test/13_drhtz-drhfz.js - drhtz and drhfz tests
*
* @licstart The following is the entire license notice for the
* JavaScript code in this file.
*
* Copyright (C) 2017 Patrick McDermott
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As additional permission under GNU GPL version 3 section 7, you
* may distribute non-source (e.g. minimized or compacted) forms of
* this program without the copy of the GNU GPL normally required by
* section 4, provided you include this license notice and a URL
* through which recipients can access the Corresponding Source.
*
* @licend The above is the entire license notice
* for the JavaScript code in this file.
*/
var assert = require("assert");
require("../lib/decmath.js");
describe("drhtz() and drhfz()", function() {
context("without tie-breaking", function() {
var tests = [
/* a p r functions */
[ 23.1 , 0, "23." , drhtz, drhfz],
[ 23.9 , 0, "24." , drhtz, drhfz],
[ 2.31, 1, "2.3", drhtz, drhfz],
[ 2.39, 1, "2.4", drhtz, drhfz],
[-23.1 , 0, "-23." , drhtz, drhfz],
[-23.9 , 0, "-24." , drhtz, drhfz],
[ -2.31, 1, "-2.3", drhtz, drhfz],
[ -2.39, 1, "-2.4", drhtz, drhfz],
];
tests.forEach(function(test) {
test.slice(3).forEach(function(f) {
var rule;
switch (f) {
case drhtz:
rule = "toward zero";
break;
case drhfz:
rule = "away from zero";
break;
}
it("correctly round " + rule + " " + test[0] +
" with precision " + test[1] + " to " +
test[2], function() {
assert.equal(
f(test[0], test[1]),
test[2]);
});
});
});
});
context("with tie-breaking", function() {
var tests = [
/* a p r functions */
[ 23.5 , 0, "23." , drhtz ],
[ 23.5 , 0, "24." , drhfz],
[ 2.35, 1, "2.3", drhtz ],
[ 2.35, 1, "2.4", drhfz],
[-23.5 , 0, "-23." , drhtz ],
[-23.5 , 0, "-24." , drhfz],
[ -2.35, 1, "-2.3", drhtz ],
[ -2.35, 1, "-2.4", drhfz],
];
tests.forEach(function(test) {
test.slice(3).forEach(function(f) {
var rule;
switch (f) {
case drhtz:
rule = "toward zero";
break;
case drhfz:
rule = "away from zero";
break;
}
it("correctly round " + rule + " " + test[0] +
" with precision " + test[1] + " to " +
test[2], function() {
assert.equal(
f(test[0], test[1]),
test[2]);
});
});
});
});
context("with invalid precision", function() {
var tests = [
/* a p r functions */
[ 23 , 1, null, drhtz, drhfz],
];
tests.forEach(function(test) {
test.slice(3).forEach(function(f) {
var rule;
switch (f) {
case drhtz:
rule = "toward zero";
break;
case drhfz:
rule = "away from zero";
break;
}
it("correctly round " + rule + " " + test[0] +
" with precision " + test[1] + " to " +
test[2], function() {
assert.equal(
f(test[0], test[1]),
test[2]);
});
});
});
});
});
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