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61935bc167
A llvm/clang bug on Darwin ia32 makes these tests fail 100% of the time. Since no one really seems to mind overly much, and we can't reasonably fix this in node anyway, just accept both types of NaN for now.
136 lines
4.6 KiB
JavaScript
136 lines
4.6 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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/*
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* Tests to verify we're writing floats correctly
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*/
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var SlowBuffer = process.binding('buffer').SlowBuffer;
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var common = require('../common');
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var ASSERT = require('assert');
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function test(clazz) {
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var buffer = new clazz(8);
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buffer.writeFloatBE(1, 0);
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buffer.writeFloatLE(1, 4);
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ASSERT.equal(0x3f, buffer[0]);
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ASSERT.equal(0x80, 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(0x80, buffer[6]);
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ASSERT.equal(0x3f, buffer[7]);
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buffer.writeFloatBE(1 / 3, 0);
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buffer.writeFloatLE(1 / 3, 4);
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ASSERT.equal(0x3e, buffer[0]);
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ASSERT.equal(0xaa, buffer[1]);
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ASSERT.equal(0xaa, buffer[2]);
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ASSERT.equal(0xab, buffer[3]);
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ASSERT.equal(0xab, buffer[4]);
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ASSERT.equal(0xaa, buffer[5]);
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ASSERT.equal(0xaa, buffer[6]);
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ASSERT.equal(0x3e, buffer[7]);
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buffer.writeFloatBE(3.4028234663852886e+38, 0);
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buffer.writeFloatLE(3.4028234663852886e+38, 4);
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ASSERT.equal(0x7f, buffer[0]);
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ASSERT.equal(0x7f, 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(0x7f, buffer[6]);
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ASSERT.equal(0x7f, buffer[7]);
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buffer.writeFloatLE(1.1754943508222875e-38, 0);
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buffer.writeFloatBE(1.1754943508222875e-38, 4);
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ASSERT.equal(0x00, buffer[0]);
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ASSERT.equal(0x00, buffer[1]);
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ASSERT.equal(0x80, 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(0x80, buffer[5]);
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ASSERT.equal(0x00, buffer[6]);
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ASSERT.equal(0x00, buffer[7]);
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buffer.writeFloatBE(0 * -1, 0);
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buffer.writeFloatLE(0 * -1, 4);
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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(0x80, buffer[7]);
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buffer.writeFloatBE(Infinity, 0);
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buffer.writeFloatLE(Infinity, 4);
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ASSERT.equal(0x7F, buffer[0]);
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ASSERT.equal(0x80, 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(0x80, buffer[6]);
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ASSERT.equal(0x7F, buffer[7]);
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ASSERT.equal(Infinity, buffer.readFloatBE(0));
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ASSERT.equal(Infinity, buffer.readFloatLE(4));
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buffer.writeFloatBE(-Infinity, 0);
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buffer.writeFloatLE(-Infinity, 4);
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// Darwin ia32 does the other kind of NaN.
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// Compiler bug. No one really cares.
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ASSERT(0xFF === buffer[0] || 0x7F === buffer[0]);
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ASSERT.equal(0x80, 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(0x80, buffer[6]);
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ASSERT.equal(0xFF, buffer[7]);
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ASSERT.equal(-Infinity, buffer.readFloatBE(0));
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ASSERT.equal(-Infinity, buffer.readFloatLE(4));
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buffer.writeFloatBE(NaN, 0);
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buffer.writeFloatLE(NaN, 4);
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// Darwin ia32 does the other kind of NaN.
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// Compiler bug. No one really cares.
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ASSERT(0x7F === buffer[0] || 0xFF === buffer[0]);
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ASSERT.equal(0xc0, 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(0xc0, buffer[6]);
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// Darwin ia32 does the other kind of NaN.
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// Compiler bug. No one really cares.
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ASSERT(0x7F === buffer[7] || 0xFF === buffer[7]);
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ASSERT.ok(isNaN(buffer.readFloatBE(0)));
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ASSERT.ok(isNaN(buffer.readFloatLE(4)));
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}
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test(Buffer);
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test(SlowBuffer);
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