/* * Tests to verify we're writing doubles correctly */ var ASSERT = require('assert'); function test() { var buffer = new Buffer(16); buffer.writeDouble(2.225073858507201e-308, 0, true); buffer.writeDouble(2.225073858507201e-308, 8, false); ASSERT.equal(0x00, buffer[0]); ASSERT.equal(0x0f, buffer[1]); ASSERT.equal(0xff, buffer[2]); ASSERT.equal(0xff, buffer[3]); ASSERT.equal(0xff, buffer[4]); ASSERT.equal(0xff, buffer[5]); ASSERT.equal(0xff, buffer[6]); ASSERT.equal(0xff, buffer[7]); ASSERT.equal(0xff, buffer[8]); ASSERT.equal(0xff, buffer[9]); ASSERT.equal(0xff, buffer[10]); ASSERT.equal(0xff, buffer[11]); ASSERT.equal(0xff, buffer[12]); ASSERT.equal(0xff, buffer[13]); ASSERT.equal(0x0f, buffer[14]); ASSERT.equal(0x00, buffer[15]); buffer.writeDouble(1.0000000000000004, 0, true); buffer.writeDouble(1.0000000000000004, 8, false); ASSERT.equal(0x3f, buffer[0]); ASSERT.equal(0xf0, buffer[1]); ASSERT.equal(0x00, buffer[2]); ASSERT.equal(0x00, buffer[3]); ASSERT.equal(0x00, buffer[4]); ASSERT.equal(0x00, buffer[5]); ASSERT.equal(0x00, buffer[6]); ASSERT.equal(0x02, buffer[7]); ASSERT.equal(0x02, buffer[8]); ASSERT.equal(0x00, buffer[9]); ASSERT.equal(0x00, buffer[10]); ASSERT.equal(0x00, buffer[11]); ASSERT.equal(0x00, buffer[12]); ASSERT.equal(0x00, buffer[13]); ASSERT.equal(0xf0, buffer[14]); ASSERT.equal(0x3f, buffer[15]); buffer.writeDouble(-2, 0, true); buffer.writeDouble(-2, 8, false); ASSERT.equal(0xc0, buffer[0]); ASSERT.equal(0x00, buffer[1]); ASSERT.equal(0x00, buffer[2]); ASSERT.equal(0x00, buffer[3]); ASSERT.equal(0x00, buffer[4]); ASSERT.equal(0x00, buffer[5]); ASSERT.equal(0x00, buffer[6]); ASSERT.equal(0x00, buffer[7]); ASSERT.equal(0x00, buffer[8]); ASSERT.equal(0x00, buffer[9]); ASSERT.equal(0x00, buffer[10]); ASSERT.equal(0x00, buffer[11]); ASSERT.equal(0x00, buffer[12]); ASSERT.equal(0x00, buffer[13]); ASSERT.equal(0x00, buffer[14]); ASSERT.equal(0xc0, buffer[15]); buffer.writeDouble(1.7976931348623157e+308, 0, true); buffer.writeDouble(1.7976931348623157e+308, 8, false); ASSERT.equal(0x7f, buffer[0]); ASSERT.equal(0xef, buffer[1]); ASSERT.equal(0xff, buffer[2]); ASSERT.equal(0xff, buffer[3]); ASSERT.equal(0xff, buffer[4]); ASSERT.equal(0xff, buffer[5]); ASSERT.equal(0xff, buffer[6]); ASSERT.equal(0xff, buffer[7]); ASSERT.equal(0xff, buffer[8]); ASSERT.equal(0xff, buffer[9]); ASSERT.equal(0xff, buffer[10]); ASSERT.equal(0xff, buffer[11]); ASSERT.equal(0xff, buffer[12]); ASSERT.equal(0xff, buffer[13]); ASSERT.equal(0xef, buffer[14]); ASSERT.equal(0x7f, buffer[15]); buffer.writeDouble(0*-1, 0, true); buffer.writeDouble(0*-1, 8, false); ASSERT.equal(0x80, buffer[0]); ASSERT.equal(0x00, buffer[1]); ASSERT.equal(0x00, buffer[2]); ASSERT.equal(0x00, buffer[3]); ASSERT.equal(0x00, buffer[4]); ASSERT.equal(0x00, buffer[5]); ASSERT.equal(0x00, buffer[6]); ASSERT.equal(0x00, buffer[7]); ASSERT.equal(0x00, buffer[8]); ASSERT.equal(0x00, buffer[9]); ASSERT.equal(0x00, buffer[10]); ASSERT.equal(0x00, buffer[11]); ASSERT.equal(0x00, buffer[12]); ASSERT.equal(0x00, buffer[13]); ASSERT.equal(0x00, buffer[14]); ASSERT.equal(0x80, buffer[15]); } test();