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Diffstat (limited to 'node_modules/@xtuc/ieee754')
| -rw-r--r-- | node_modules/@xtuc/ieee754/LICENSE | 28 | ||||
| -rw-r--r-- | node_modules/@xtuc/ieee754/README.md | 51 | ||||
| -rw-r--r-- | node_modules/@xtuc/ieee754/dist/.gitkeep | 0 | ||||
| -rw-r--r-- | node_modules/@xtuc/ieee754/dist/index.cjs.js | 96 | ||||
| -rw-r--r-- | node_modules/@xtuc/ieee754/index.js | 84 | ||||
| -rw-r--r-- | node_modules/@xtuc/ieee754/package.json | 75 |
6 files changed, 334 insertions, 0 deletions
diff --git a/node_modules/@xtuc/ieee754/LICENSE b/node_modules/@xtuc/ieee754/LICENSE new file mode 100644 index 0000000..f37a2eb --- /dev/null +++ b/node_modules/@xtuc/ieee754/LICENSE @@ -0,0 +1,28 @@ +Copyright (c) 2008, Fair Oaks Labs, Inc. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + + * Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + * Neither the name of Fair Oaks Labs, Inc. nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE +LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. diff --git a/node_modules/@xtuc/ieee754/README.md b/node_modules/@xtuc/ieee754/README.md new file mode 100644 index 0000000..cb7527b --- /dev/null +++ b/node_modules/@xtuc/ieee754/README.md @@ -0,0 +1,51 @@ +# ieee754 [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] + +[travis-image]: https://img.shields.io/travis/feross/ieee754/master.svg +[travis-url]: https://travis-ci.org/feross/ieee754 +[npm-image]: https://img.shields.io/npm/v/ieee754.svg +[npm-url]: https://npmjs.org/package/ieee754 +[downloads-image]: https://img.shields.io/npm/dm/ieee754.svg +[downloads-url]: https://npmjs.org/package/ieee754 +[standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg +[standard-url]: https://standardjs.com + +[![saucelabs][saucelabs-image]][saucelabs-url] + +[saucelabs-image]: https://saucelabs.com/browser-matrix/ieee754.svg +[saucelabs-url]: https://saucelabs.com/u/ieee754 + +### Read/write IEEE754 floating point numbers from/to a Buffer or array-like object. + +## install + +``` +npm install ieee754 +``` + +## methods + +`var ieee754 = require('ieee754')` + +The `ieee754` object has the following functions: + +``` +ieee754.read = function (buffer, offset, isLE, mLen, nBytes) +ieee754.write = function (buffer, value, offset, isLE, mLen, nBytes) +``` + +The arguments mean the following: + +- buffer = the buffer +- offset = offset into the buffer +- value = value to set (only for `write`) +- isLe = is little endian? +- mLen = mantissa length +- nBytes = number of bytes + +## what is ieee754? + +The IEEE Standard for Floating-Point Arithmetic (IEEE 754) is a technical standard for floating-point computation. [Read more](http://en.wikipedia.org/wiki/IEEE_floating_point). + +## license + +BSD 3 Clause. Copyright (c) 2008, Fair Oaks Labs, Inc. diff --git a/node_modules/@xtuc/ieee754/dist/.gitkeep b/node_modules/@xtuc/ieee754/dist/.gitkeep new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/node_modules/@xtuc/ieee754/dist/.gitkeep diff --git a/node_modules/@xtuc/ieee754/dist/index.cjs.js b/node_modules/@xtuc/ieee754/dist/index.cjs.js new file mode 100644 index 0000000..46b7381 --- /dev/null +++ b/node_modules/@xtuc/ieee754/dist/index.cjs.js @@ -0,0 +1,96 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.read = read; +exports.write = write; + +function read(buffer, offset, isLE, mLen, nBytes) { + var e, m; + var eLen = nBytes * 8 - mLen - 1; + var eMax = (1 << eLen) - 1; + var eBias = eMax >> 1; + var nBits = -7; + var i = isLE ? nBytes - 1 : 0; + var d = isLE ? -1 : 1; + var s = buffer[offset + i]; + i += d; + e = s & (1 << -nBits) - 1; + s >>= -nBits; + nBits += eLen; + + for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {} + + m = e & (1 << -nBits) - 1; + e >>= -nBits; + nBits += mLen; + + for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {} + + if (e === 0) { + e = 1 - eBias; + } else if (e === eMax) { + return m ? NaN : (s ? -1 : 1) * Infinity; + } else { + m = m + Math.pow(2, mLen); + e = e - eBias; + } + + return (s ? -1 : 1) * m * Math.pow(2, e - mLen); +} + +function write(buffer, value, offset, isLE, mLen, nBytes) { + var e, m, c; + var eLen = nBytes * 8 - mLen - 1; + var eMax = (1 << eLen) - 1; + var eBias = eMax >> 1; + var rt = mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0; + var i = isLE ? 0 : nBytes - 1; + var d = isLE ? 1 : -1; + var s = value < 0 || value === 0 && 1 / value < 0 ? 1 : 0; + value = Math.abs(value); + + if (isNaN(value) || value === Infinity) { + m = isNaN(value) ? 1 : 0; + e = eMax; + } else { + e = Math.floor(Math.log(value) / Math.LN2); + + if (value * (c = Math.pow(2, -e)) < 1) { + e--; + c *= 2; + } + + if (e + eBias >= 1) { + value += rt / c; + } else { + value += rt * Math.pow(2, 1 - eBias); + } + + if (value * c >= 2) { + e++; + c /= 2; + } + + if (e + eBias >= eMax) { + m = 0; + e = eMax; + } else if (e + eBias >= 1) { + m = (value * c - 1) * Math.pow(2, mLen); + e = e + eBias; + } else { + m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen); + e = 0; + } + } + + for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} + + e = e << mLen | m; + eLen += mLen; + + for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} + + buffer[offset + i - d] |= s * 128; +} diff --git a/node_modules/@xtuc/ieee754/index.js b/node_modules/@xtuc/ieee754/index.js new file mode 100644 index 0000000..f294ac0 --- /dev/null +++ b/node_modules/@xtuc/ieee754/index.js @@ -0,0 +1,84 @@ +export function read(buffer, offset, isLE, mLen, nBytes) { + var e, m + var eLen = (nBytes * 8) - mLen - 1 + var eMax = (1 << eLen) - 1 + var eBias = eMax >> 1 + var nBits = -7 + var i = isLE ? (nBytes - 1) : 0 + var d = isLE ? -1 : 1 + var s = buffer[offset + i] + + i += d + + e = s & ((1 << (-nBits)) - 1) + s >>= (-nBits) + nBits += eLen + for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {} + + m = e & ((1 << (-nBits)) - 1) + e >>= (-nBits) + nBits += mLen + for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {} + + if (e === 0) { + e = 1 - eBias + } else if (e === eMax) { + return m ? NaN : ((s ? -1 : 1) * Infinity) + } else { + m = m + Math.pow(2, mLen) + e = e - eBias + } + return (s ? -1 : 1) * m * Math.pow(2, e - mLen) +} + +export function write(buffer, value, offset, isLE, mLen, nBytes) { + var e, m, c + var eLen = (nBytes * 8) - mLen - 1 + var eMax = (1 << eLen) - 1 + var eBias = eMax >> 1 + var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0) + var i = isLE ? 0 : (nBytes - 1) + var d = isLE ? 1 : -1 + var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0 + + value = Math.abs(value) + + if (isNaN(value) || value === Infinity) { + m = isNaN(value) ? 1 : 0 + e = eMax + } else { + e = Math.floor(Math.log(value) / Math.LN2) + if (value * (c = Math.pow(2, -e)) < 1) { + e-- + c *= 2 + } + if (e + eBias >= 1) { + value += rt / c + } else { + value += rt * Math.pow(2, 1 - eBias) + } + if (value * c >= 2) { + e++ + c /= 2 + } + + if (e + eBias >= eMax) { + m = 0 + e = eMax + } else if (e + eBias >= 1) { + m = ((value * c) - 1) * Math.pow(2, mLen) + e = e + eBias + } else { + m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) + e = 0 + } + } + + for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} + + e = (e << mLen) | m + eLen += mLen + for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} + + buffer[offset + i - d] |= s * 128 +} diff --git a/node_modules/@xtuc/ieee754/package.json b/node_modules/@xtuc/ieee754/package.json new file mode 100644 index 0000000..3e09494 --- /dev/null +++ b/node_modules/@xtuc/ieee754/package.json @@ -0,0 +1,75 @@ +{ + "_from": "@xtuc/ieee754@^1.2.0", + "_id": "@xtuc/ieee754@1.2.0", + "_inBundle": false, + "_integrity": "sha512-DX8nKgqcGwsc0eJSqYt5lwP4DH5FlHnmuWWBRy7X0NcaGR0ZtuyeESgMwTYVEtxmsNGY+qit4QYT/MIYTOTPeA==", + "_location": "/@xtuc/ieee754", + "_phantomChildren": {}, + "_requested": { + "type": "range", + "registry": true, + "raw": "@xtuc/ieee754@^1.2.0", + "name": "@xtuc/ieee754", + "escapedName": "@xtuc%2fieee754", + "scope": "@xtuc", + "rawSpec": "^1.2.0", + "saveSpec": null, + "fetchSpec": "^1.2.0" + }, + "_requiredBy": [ + "/@webassemblyjs/ieee754" + ], + "_resolved": "https://registry.npmjs.org/@xtuc/ieee754/-/ieee754-1.2.0.tgz", + "_shasum": "eef014a3145ae477a1cbc00cd1e552336dceb790", + "_spec": "@xtuc/ieee754@^1.2.0", + "_where": "/home/pruss/Dev/3-minute-website/node_modules/@webassemblyjs/ieee754", + "author": { + "name": "Feross Aboukhadijeh", + "email": "feross@feross.org", + "url": "http://feross.org" + }, + "bugs": { + "url": "https://github.com/feross/ieee754/issues" + }, + "bundleDependencies": false, + "contributors": [ + { + "name": "Romain Beauxis", + "email": "toots@rastageeks.org" + } + ], + "deprecated": false, + "description": "Read/write IEEE754 floating point numbers from/to a Buffer or array-like object", + "devDependencies": { + "@babel/cli": "^7.0.0-beta.54", + "@babel/core": "^7.0.0-beta.54", + "@babel/plugin-transform-modules-commonjs": "^7.0.0-beta.54", + "airtap": "0.0.7", + "standard": "*", + "tape": "^4.0.0" + }, + "homepage": "https://github.com/feross/ieee754#readme", + "keywords": [ + "IEEE 754", + "buffer", + "convert", + "floating point", + "ieee754" + ], + "license": "BSD-3-Clause", + "main": "dist/index.cjs.js", + "module": "index.js", + "name": "@xtuc/ieee754", + "prepublish": "babel --plugins @babel/plugin-transform-modules-commonjs index.js -o dist/index.cjs.js", + "repository": { + "type": "git", + "url": "git://github.com/feross/ieee754.git" + }, + "scripts": { + "test": "standard && npm run test-node && npm run test-browser", + "test-browser": "airtap -- test/*.js", + "test-browser-local": "airtap --local -- test/*.js", + "test-node": "tape test/*.js" + }, + "version": "1.2.0" +} |