在dart中浮动IEEE 754时解析整数位模式 [英] Parsing integer bit-patterns as IEEE 754 floats in dart

问题描述

我正在通过接口(蓝牙，列表)获取4个字节的数据.数据表示IEEE 754浮点数(例如0x3fd0a3d7，大约表示1.63作为二进制32 float)

I am getting 4 bytes of data through an interface(Bluetooth, List). The data is representing IEEE 754 float (e.g. 0x3fd0a3d7, which represents approximately 1.63 as a binary32 float)

在dart lang中是否有一种方法可以将其转换/键入双精度浮点数然后加倍? Java中的intBitsToFloat之类的东西.找不到任何东西.还是我只需要自己编写IEEE 754解析文件?

Is there a way in dart lang to convert / type-pun this to float and then double? Something like intBitsToFloat in Java. Couldn't find anything. Or do I just have to write the IEEE 754 parsing myself?

推荐答案

这有效，只需导入dart:typed_data库:

  var bdata = ByteData(4);
  bdata.setInt32(0, 0x3fd0a3d7);
  print(bdata.getFloat32(0)); //Prints: 1.6299999952316284

(我不确定这是最可靠的方法)

(I'm not sure this is the most reliable way)

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