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authorruki <waruqi@gmail.com>2018-11-08 00:38:48 +0800
committerruki <waruqi@gmail.com>2018-11-07 21:53:09 +0800
commit26105034da4fcce7ac883c899d781f016559310d (patch)
treec459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/@webassemblyjs/ieee754/lib
parent2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff)
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xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip
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Diffstat (limited to 'node_modules/@webassemblyjs/ieee754/lib')
-rw-r--r--node_modules/@webassemblyjs/ieee754/lib/index.js52
1 files changed, 52 insertions, 0 deletions
diff --git a/node_modules/@webassemblyjs/ieee754/lib/index.js b/node_modules/@webassemblyjs/ieee754/lib/index.js
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+++ b/node_modules/@webassemblyjs/ieee754/lib/index.js
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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.encodeF32 = encodeF32;
+exports.encodeF64 = encodeF64;
+exports.decodeF32 = decodeF32;
+exports.decodeF64 = decodeF64;
+exports.DOUBLE_PRECISION_MANTISSA = exports.SINGLE_PRECISION_MANTISSA = exports.NUMBER_OF_BYTE_F64 = exports.NUMBER_OF_BYTE_F32 = void 0;
+
+var _ieee = require("@xtuc/ieee754");
+
+/**
+ * According to https://webassembly.github.io/spec/binary/values.html#binary-float
+ * n = 32/8
+ */
+var NUMBER_OF_BYTE_F32 = 4;
+/**
+ * According to https://webassembly.github.io/spec/binary/values.html#binary-float
+ * n = 64/8
+ */
+
+exports.NUMBER_OF_BYTE_F32 = NUMBER_OF_BYTE_F32;
+var NUMBER_OF_BYTE_F64 = 8;
+exports.NUMBER_OF_BYTE_F64 = NUMBER_OF_BYTE_F64;
+var SINGLE_PRECISION_MANTISSA = 23;
+exports.SINGLE_PRECISION_MANTISSA = SINGLE_PRECISION_MANTISSA;
+var DOUBLE_PRECISION_MANTISSA = 52;
+exports.DOUBLE_PRECISION_MANTISSA = DOUBLE_PRECISION_MANTISSA;
+
+function encodeF32(v) {
+ var buffer = [];
+ (0, _ieee.write)(buffer, v, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32);
+ return buffer;
+}
+
+function encodeF64(v) {
+ var buffer = [];
+ (0, _ieee.write)(buffer, v, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64);
+ return buffer;
+}
+
+function decodeF32(bytes) {
+ var buffer = Buffer.from(bytes);
+ return (0, _ieee.read)(buffer, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32);
+}
+
+function decodeF64(bytes) {
+ var buffer = Buffer.from(bytes);
+ return (0, _ieee.read)(buffer, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64);
+} \ No newline at end of file