mirror of
https://github.com/nodejs/node.git
synced 2024-11-25 08:19:38 +01:00
3e1b1dd4a9
The copyright and license notice is already in the LICENSE file. There is no justifiable reason to also require that it be included in every file, since the individual files are not individually distributed except as part of the entire package.
71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
/*
|
|
* Tests to verify we're reading in floats correctly
|
|
*/
|
|
var common = require('../common');
|
|
var ASSERT = require('assert');
|
|
|
|
/*
|
|
* Test (32 bit) float
|
|
*/
|
|
function test(clazz) {
|
|
var buffer = new clazz(4);
|
|
|
|
buffer[0] = 0;
|
|
buffer[1] = 0;
|
|
buffer[2] = 0x80;
|
|
buffer[3] = 0x3f;
|
|
ASSERT.equal(4.600602988224807e-41, buffer.readFloatBE(0));
|
|
ASSERT.equal(1, buffer.readFloatLE(0));
|
|
|
|
buffer[0] = 0;
|
|
buffer[1] = 0;
|
|
buffer[2] = 0;
|
|
buffer[3] = 0xc0;
|
|
ASSERT.equal(2.6904930515036488e-43, buffer.readFloatBE(0));
|
|
ASSERT.equal(-2, buffer.readFloatLE(0));
|
|
|
|
buffer[0] = 0xff;
|
|
buffer[1] = 0xff;
|
|
buffer[2] = 0x7f;
|
|
buffer[3] = 0x7f;
|
|
ASSERT.ok(isNaN(buffer.readFloatBE(0)));
|
|
ASSERT.equal(3.4028234663852886e+38, buffer.readFloatLE(0));
|
|
|
|
buffer[0] = 0xab;
|
|
buffer[1] = 0xaa;
|
|
buffer[2] = 0xaa;
|
|
buffer[3] = 0x3e;
|
|
ASSERT.equal(-1.2126478207002966e-12, buffer.readFloatBE(0));
|
|
ASSERT.equal(0.3333333432674408, buffer.readFloatLE(0));
|
|
|
|
buffer[0] = 0;
|
|
buffer[1] = 0;
|
|
buffer[2] = 0;
|
|
buffer[3] = 0;
|
|
ASSERT.equal(0, buffer.readFloatBE(0));
|
|
ASSERT.equal(0, buffer.readFloatLE(0));
|
|
ASSERT.equal(false, 1 / buffer.readFloatLE(0) < 0);
|
|
|
|
buffer[3] = 0x80;
|
|
ASSERT.equal(1.793662034335766e-43, buffer.readFloatBE(0));
|
|
ASSERT.equal(0, buffer.readFloatLE(0));
|
|
ASSERT.equal(true, 1 / buffer.readFloatLE(0) < 0);
|
|
|
|
buffer[0] = 0;
|
|
buffer[1] = 0;
|
|
buffer[2] = 0x80;
|
|
buffer[3] = 0x7f;
|
|
ASSERT.equal(4.609571298396486e-41, buffer.readFloatBE(0));
|
|
ASSERT.equal(Infinity, buffer.readFloatLE(0));
|
|
|
|
buffer[0] = 0;
|
|
buffer[1] = 0;
|
|
buffer[2] = 0x80;
|
|
buffer[3] = 0xff;
|
|
ASSERT.equal(4.627507918739843e-41, buffer.readFloatBE(0));
|
|
ASSERT.equal(-Infinity, buffer.readFloatLE(0));
|
|
}
|
|
|
|
|
|
test(Buffer);
|