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Filename : index.js

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import { write, read } from "@xtuc/ieee754";
/**
 * According to https://webassembly.github.io/spec/binary/values.html#binary-float
 * n = 32/8
 */

export var NUMBER_OF_BYTE_F32 = 4;
/**
 * According to https://webassembly.github.io/spec/binary/values.html#binary-float
 * n = 64/8
 */

export var NUMBER_OF_BYTE_F64 = 8;
export var SINGLE_PRECISION_MANTISSA = 23;
export var DOUBLE_PRECISION_MANTISSA = 52;
export function encodeF32(v) {
  var buffer = [];
  write(buffer, v, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32);
  return buffer;
}
export function encodeF64(v) {
  var buffer = [];
  write(buffer, v, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64);
  return buffer;
}
export function decodeF32(bytes) {
  var buffer = Buffer.from(bytes);
  return read(buffer, 0, true, SINGLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F32);
}
export function decodeF64(bytes) {
  var buffer = Buffer.from(bytes);
  return read(buffer, 0, true, DOUBLE_PRECISION_MANTISSA, NUMBER_OF_BYTE_F64);
}