mirror of
https://github.com/josdejong/mathjs.git
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c5971b371a
* chore(package): update standard to version 12.0.0
* update to new lint version with --fix
I believe this mainly adds whitespace to `{}`'s.
* Replace assert.equal with assert.strictEqual
This breaks a lot of tests which I will endevour to fix in the next
commits.
* Fix most errors due to assert.strictEquals
Some instances of `strictEquals` are replaced by `deepEquals`.
`toString` has been used to make some string comparisions explicit.
Tests will still fail untill #1236 and #1237 are fixed.
* Fix assertion erros due to -0
With node 10, assert.strictEqual no longer considers `0 === -0`.
I missed these first time round as I was using node 8.
* Put toString correct side of bracket
I was converting the constructor to a string rather
than the result of the computation. Oops.
* Fixed #1236: quantileSeq has inconsistant return
* Update package-lock
* Fixed #1237: norm sometimes returning a complex number instead of number
* Fix cli tests
* More changes for standardjs, and fixes in unit tests
110 lines
4.4 KiB
JavaScript
110 lines
4.4 KiB
JavaScript
const assert = require('assert')
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const math = require('../../../src/main')
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const approx = require('../../../tools/approx')
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const pi = math.pi
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const complex = math.complex
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const matrix = math.matrix
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const unit = math.unit
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const sec = math.sec
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const bigmath = math.create({ number: 'BigNumber', precision: 20 })
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const biggermath = math.create({ number: 'BigNumber', precision: 21 })
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describe('sec', function () {
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it('should return the secant of a boolean', function () {
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approx.equal(sec(true), 1.85081571768093)
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assert.strictEqual(sec(false), 1)
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})
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it('should return the secant of a number', function () {
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approx.equal(1 / sec(0), 1)
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approx.equal(1 / sec(pi * 1 / 4), 0.707106781186548)
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approx.equal(1 / sec(pi * 1 / 8), 0.923879532511287)
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approx.equal(1 / sec(pi * 2 / 4), 0)
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approx.equal(1 / sec(pi * 3 / 4), -0.707106781186548)
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approx.equal(1 / sec(pi * 4 / 4), -1)
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approx.equal(1 / sec(pi * 5 / 4), -0.707106781186548)
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approx.equal(1 / sec(pi * 6 / 4), 0)
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approx.equal(1 / sec(pi * 7 / 4), 0.707106781186548)
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approx.equal(1 / sec(pi * 8 / 4), 1)
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approx.equal(1 / sec(pi / 4), math.sqrt(2) / 2)
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approx.equal(math.pow(sec(pi / 4), 2), 2)
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approx.equal(sec(0), 1)
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approx.equal(sec(pi), -1)
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approx.equal(sec(-pi), -1)
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approx.equal(math.pow(sec(-pi / 4), 2), 2)
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approx.equal(sec(2 * pi), 1)
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approx.equal(sec(-2 * pi), 1)
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})
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it('should return the secant of a bignumber', function () {
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const Big = bigmath.bignumber
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let bigPi = bigmath.pi
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const sqrt2 = bigmath.SQRT2.toString()
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assert.deepStrictEqual(bigmath.sec(Big(0)), Big(1))
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assert.deepStrictEqual(bigmath.sec(bigPi.div(8)).toString(), '1.0823922002923939688')
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assert.deepStrictEqual(bigmath.sec(bigPi.div(4)).toString(), sqrt2)
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assert.deepStrictEqual(bigmath.sec(bigPi).toString(), '-1')
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assert.deepStrictEqual(bigmath.sec(bigPi.times(2)).toString(), '1')
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assert.deepStrictEqual(bigmath.sec(bigmath.tau).toString(), '1')
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assert.deepStrictEqual(bigmath.sec(bigmath.tau.times(-2)).toString(), '1')
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/* Pass in one more digit of pi. */
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bigPi = biggermath.pi
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assert.deepStrictEqual(bigmath.sec(bigPi.div(2)), Big('756606132568153667460')) // (large number, about infinity)
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assert.deepStrictEqual(bigmath.sec(bigPi.times(3).div(4)).toString(), '-' + sqrt2)
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assert.deepStrictEqual(bigmath.sec(bigPi.times(5).div(4)).toString(), '-' + sqrt2)
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})
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it('should return the secant of a complex number', function () {
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const re = 0.0416749644111443
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const im = 0.0906111371962376
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approx.deepEqual(sec(complex('2+3i')), complex(-re, im))
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approx.deepEqual(sec(complex('2-3i')), complex(-re, -im))
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approx.deepEqual(sec(complex('-2+3i')), complex(-re, -im))
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approx.deepEqual(sec(complex('-2-3i')), complex(-re, im))
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approx.deepEqual(sec(complex('i')), complex(0.648054273663885, 0))
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approx.deepEqual(sec(complex('1')), complex(1.85081571768093, 0))
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approx.deepEqual(sec(complex('1+i')), complex(0.498337030555187, 0.591083841721045))
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})
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it('should return the secant of an angle', function () {
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approx.equal(sec(unit('45deg')), 1.41421356237310)
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approx.equal(sec(unit('-45deg')), 1.41421356237310)
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assert(math.type.isBigNumber(sec(unit(math.bignumber(45), 'deg'))))
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approx.equal(sec(unit(math.bignumber(45), 'deg')).toNumber(), 1.41421356237310)
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approx.deepEqual(sec(unit(complex('1+i'), 'rad')), complex(0.498337030555187, 0.591083841721045))
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})
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it('should throw an error if called with an invalid unit', function () {
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assert.throws(function () { sec(unit('5 celsius')) })
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})
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it('should throw an error if called with a string', function () {
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assert.throws(function () { sec('string') })
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})
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const sec123 = [1.85081571768093, -2.40299796172238, -1.01010866590799]
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it('should return the secant of each element of an array', function () {
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approx.deepEqual(sec([1, 2, 3]), sec123)
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})
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it('should return the secant of each element of a matrix', function () {
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approx.deepEqual(sec(matrix([1, 2, 3])), matrix(sec123))
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})
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it('should throw an error in case of invalid number of arguments', function () {
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assert.throws(function () { sec() }, /TypeError: Too few arguments/)
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assert.throws(function () { sec(1, 2) }, /TypeError: Too many arguments/)
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})
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it('should LaTeX sec', function () {
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const expression = math.parse('sec(1)')
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assert.strictEqual(expression.toTex(), '\\sec\\left(1\\right)')
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})
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})
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