/* * Tests to verify we're writing floats correctly */ var ASSERT = require('assert'); function test() { var buffer = new Buffer(8); buffer.writeFloatBE(1, 0); buffer.writeFloatLE(1, 4); ASSERT.equal(0x3f, buffer[0]); ASSERT.equal(0x80, buffer[1]); ASSERT.equal(0x00, buffer[2]); ASSERT.equal(0x00, buffer[3]); ASSERT.equal(0x00, buffer[4]); ASSERT.equal(0x00, buffer[5]); ASSERT.equal(0x80, buffer[6]); ASSERT.equal(0x3f, buffer[7]); buffer.writeFloatBE(1.793662034335766e-43, 0); buffer.writeFloatLE(1.793662034335766e-43, 4); ASSERT.equal(0x00, buffer[0]); ASSERT.equal(0x00, buffer[1]); ASSERT.equal(0x00, buffer[2]); ASSERT.equal(0x80, buffer[3]); ASSERT.equal(0x80, buffer[4]); ASSERT.equal(0x00, buffer[5]); ASSERT.equal(0x00, buffer[6]); ASSERT.equal(0x00, buffer[7]); buffer.writeFloatBE(1 / 3, 0); buffer.writeFloatLE(1 / 3, 4); ASSERT.equal(0x3e, buffer[0]); ASSERT.equal(0xaa, buffer[1]); ASSERT.equal(0xaa, buffer[2]); ASSERT.equal(0xab, buffer[3]); ASSERT.equal(0xab, buffer[4]); ASSERT.equal(0xaa, buffer[5]); ASSERT.equal(0xaa, buffer[6]); ASSERT.equal(0x3e, buffer[7]); buffer.writeFloatBE(3.4028234663852886e+38, 0); buffer.writeFloatLE(3.4028234663852886e+38, 4); ASSERT.equal(0x7f, buffer[0]); ASSERT.equal(0x7f, buffer[1]); ASSERT.equal(0xff, buffer[2]); ASSERT.equal(0xff, buffer[3]); ASSERT.equal(0xff, buffer[4]); ASSERT.equal(0xff, buffer[5]); ASSERT.equal(0x7f, buffer[6]); ASSERT.equal(0x7f, buffer[7]); buffer.writeFloatBE(0 * -1, 0); buffer.writeFloatLE(0 * -1, 4); 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(0x80, buffer[7]); } test();