mirror of
https://github.com/josdejong/mathjs.git
synced 2026-01-18 14:59:29 +00:00
48 lines
1.7 KiB
JavaScript
48 lines
1.7 KiB
JavaScript
// test csc
|
|
var assert = require('assert'),
|
|
math = require('../../../src/index.js'),
|
|
approx = require('../../../tools/approx.js'),
|
|
pi = math.pi,
|
|
complex = math.complex,
|
|
matrix = math.matrix,
|
|
unit = math.unit,
|
|
csc = math.csc;
|
|
|
|
// number
|
|
approx.equal(1 / csc(0), 0);
|
|
approx.equal(1 / csc(pi*1/4), 0.707106781186548);
|
|
approx.equal(1 / csc(pi*1/8), 0.382683432365090);
|
|
approx.equal(1 / csc(pi*2/4), 1);
|
|
approx.equal(1 / csc(pi*3/4), 0.707106781186548);
|
|
approx.equal(1 / csc(pi*4/4), 0);
|
|
approx.equal(1 / csc(pi*5/4), -0.707106781186548);
|
|
approx.equal(1 / csc(pi*6/4), -1);
|
|
approx.equal(1 / csc(pi*7/4), -0.707106781186548);
|
|
approx.equal(1 / csc(pi*8/4), 0);
|
|
approx.equal(1 / csc(pi/4), math.sqrt(2)/2);
|
|
|
|
// complex
|
|
var re = 0.0904732097532074;
|
|
var im = 0.0412009862885741;
|
|
approx.deepEqual(csc(complex('2+3i')), complex(re, im));
|
|
approx.deepEqual(csc(complex('2-3i')), complex(re, -im));
|
|
approx.deepEqual(csc(complex('-2+3i')), complex(-re, im));
|
|
approx.deepEqual(csc(complex('-2-3i')), complex(-re, -im));
|
|
approx.deepEqual(csc(complex('i')), complex(0, -0.850918128239322));
|
|
approx.deepEqual(csc(complex('1')), 1.18839510577812);
|
|
approx.deepEqual(csc(complex('1+i')), complex(0.621518017170428, -0.303931001628426));
|
|
|
|
// unit
|
|
approx.equal(csc(unit('45deg')), 1.41421356237310);
|
|
approx.equal(csc(unit('-45deg')), -1.41421356237310);
|
|
assert.throws(function () {csc(unit('5 celsius'))});
|
|
|
|
// string
|
|
assert.throws(function () {csc('string')});
|
|
|
|
// array, matrix, range
|
|
var csc123 = [1.18839510577812, 1.09975017029462, 7.08616739573719];
|
|
approx.deepEqual(csc([1,2,3]), csc123);
|
|
approx.deepEqual(csc(math.range('1:3')), csc123);
|
|
approx.deepEqual(csc(matrix([1,2,3])), matrix(csc123));
|