保誠-保戶業務員媒合平台
HelenHuang
2022-05-20 13d66456556a5c0a8f1ed519c01e7bd2f31d2160
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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);
}