refine precision limits on unsafe_math (#3589)

2019-11-17 01:16:42 +08:00
parent 552be61c4d
commit d1b2ecec27
2 changed files with 16 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -2953,7 +2953,8 @@ merge(Compressor.prototype, {
                && typeof result == "number"
                && (this.operator == "+" || this.operator == "-")) {
                var digits = Math.max(0, decimals(left), decimals(right));
-                if (digits < 21) return +result.toFixed(digits);
+                // 53-bit significand => 15.95 decimal places
+                if (digits < 16) return +result.toFixed(digits);
            }
            return result;