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author | Dimitri Staessens <dimitri@ouroboros.rocks> | 2019-10-06 21:37:45 +0200 |
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committer | Dimitri Staessens <dimitri@ouroboros.rocks> | 2019-10-06 21:37:45 +0200 |
commit | 3c51c3be85bb0d1bdb87ea0d6632f1c256912f27 (patch) | |
tree | c7ccc8279b12c4f7bdbbb4270d617e48f51722e4 /node_modules/lodash/_createRound.js | |
parent | 412c104bebc507bea9c94fd53b5bdc4b64cbfe31 (diff) | |
download | website-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.tar.gz website-3c51c3be85bb0d1bdb87ea0d6632f1c256912f27.zip |
build: Add some required modules for node
Diffstat (limited to 'node_modules/lodash/_createRound.js')
-rw-r--r-- | node_modules/lodash/_createRound.js | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/node_modules/lodash/_createRound.js b/node_modules/lodash/_createRound.js new file mode 100644 index 0000000..88be5df --- /dev/null +++ b/node_modules/lodash/_createRound.js @@ -0,0 +1,35 @@ +var root = require('./_root'), + toInteger = require('./toInteger'), + toNumber = require('./toNumber'), + toString = require('./toString'); + +/* Built-in method references for those with the same name as other `lodash` methods. */ +var nativeIsFinite = root.isFinite, + nativeMin = Math.min; + +/** + * Creates a function like `_.round`. + * + * @private + * @param {string} methodName The name of the `Math` method to use when rounding. + * @returns {Function} Returns the new round function. + */ +function createRound(methodName) { + var func = Math[methodName]; + return function(number, precision) { + number = toNumber(number); + precision = precision == null ? 0 : nativeMin(toInteger(precision), 292); + if (precision && nativeIsFinite(number)) { + // Shift with exponential notation to avoid floating-point issues. + // See [MDN](https://mdn.io/round#Examples) for more details. + var pair = (toString(number) + 'e').split('e'), + value = func(pair[0] + 'e' + (+pair[1] + precision)); + + pair = (toString(value) + 'e').split('e'); + return +(pair[0] + 'e' + (+pair[1] - precision)); + } + return func(number); + }; +} + +module.exports = createRound; |