mirror of
https://github.com/josdejong/mathjs.git
synced 2025-12-08 19:46:04 +00:00
29 lines
863 B
JavaScript
29 lines
863 B
JavaScript
var assert = require('assert');
|
|
var math = require('../../../src/index.js');
|
|
|
|
describe('im', function() {
|
|
|
|
it('should return the imaginary part of a complex number', function() {
|
|
assert.equal(math.im(math.complex(2,3)), 3);
|
|
assert.equal(math.im(math.complex(-2,-3)), -3);
|
|
assert.equal(math.im(math.i), 1);
|
|
});
|
|
|
|
it('should return 0 for a real number', function() {
|
|
assert.equal(math.im(2), 0);
|
|
});
|
|
|
|
it('should return 0 for a string', function() {
|
|
assert.equal(math.im('string'), 0);
|
|
});
|
|
|
|
it('should return 0 for a boolean', function() {
|
|
assert.equal(math.im(true), 0);
|
|
});
|
|
|
|
it('should return the imaginary part for each element in a matrix', function() {
|
|
assert.deepEqual(math.im([2, math.complex('3-6i')]), [0, -6]);
|
|
assert.deepEqual(math.im(math.matrix([2, math.complex('3-6i')])).valueOf(), [0, -6]);
|
|
});
|
|
|
|
}); |