diff options
Diffstat (limited to 'tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js')
-rw-r--r-- | tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js new file mode 100644 index 0000000000..cd80994a72 --- /dev/null +++ b/tools/eslint/node_modules/escope/node_modules/es6-weak-map/node_modules/es5-ext/math/log2/shim.js @@ -0,0 +1,14 @@ +'use strict'; + +var log = Math.log, LOG2E = Math.LOG2E; + +module.exports = function (x) { + if (isNaN(x)) return NaN; + x = Number(x); + if (x < 0) return NaN; + if (x === 0) return -Infinity; + if (x === 1) return 0; + if (x === Infinity) return Infinity; + + return log(x) * LOG2E; +}; |