summaryrefslogtreecommitdiffstats
path: root/node_modules/@webassemblyjs/floating-point-hex-parser/lib/index.js
diff options
context:
space:
mode:
authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/@webassemblyjs/floating-point-hex-parser/lib/index.js
downloadwebsite_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.tar.gz
website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.tar.bz2
website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.zip
api, login, auth
Diffstat (limited to 'node_modules/@webassemblyjs/floating-point-hex-parser/lib/index.js')
-rw-r--r--node_modules/@webassemblyjs/floating-point-hex-parser/lib/index.js49
1 files changed, 49 insertions, 0 deletions
diff --git a/node_modules/@webassemblyjs/floating-point-hex-parser/lib/index.js b/node_modules/@webassemblyjs/floating-point-hex-parser/lib/index.js
new file mode 100644
index 0000000..a867699
--- /dev/null
+++ b/node_modules/@webassemblyjs/floating-point-hex-parser/lib/index.js
@@ -0,0 +1,49 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.default = parse;
+
+function parse(input) {
+ input = input.toUpperCase();
+ var splitIndex = input.indexOf("P");
+ var mantissa, exponent;
+
+ if (splitIndex !== -1) {
+ mantissa = input.substring(0, splitIndex);
+ exponent = parseInt(input.substring(splitIndex + 1));
+ } else {
+ mantissa = input;
+ exponent = 0;
+ }
+
+ var dotIndex = mantissa.indexOf(".");
+
+ if (dotIndex !== -1) {
+ var integerPart = parseInt(mantissa.substring(0, dotIndex), 16);
+ var sign = Math.sign(integerPart);
+ integerPart = sign * integerPart;
+ var fractionLength = mantissa.length - dotIndex - 1;
+ var fractionalPart = parseInt(mantissa.substring(dotIndex + 1), 16);
+ var fraction = fractionLength > 0 ? fractionalPart / Math.pow(16, fractionLength) : 0;
+
+ if (sign === 0) {
+ if (fraction === 0) {
+ mantissa = sign;
+ } else {
+ if (Object.is(sign, -0)) {
+ mantissa = -fraction;
+ } else {
+ mantissa = fraction;
+ }
+ }
+ } else {
+ mantissa = sign * (integerPart + fraction);
+ }
+ } else {
+ mantissa = parseInt(mantissa, 16);
+ }
+
+ return mantissa * (splitIndex !== -1 ? Math.pow(2, exponent) : 1);
+} \ No newline at end of file