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