From c4b015770e8a29f18e19cc44b3df46c20a4762f4 Mon Sep 17 00:00:00 2001
From: JLChen <551775569@qq.com>
Date: 星期二, 10 八月 2021 10:17:42 +0800
Subject: [PATCH] 2021-08-10 1.更新
---
hdl_core/src/main/java/com/hdl/sdk/hdl_core/Util/TransformUtil/HDLUtlis.java | 50 ++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 42 insertions(+), 8 deletions(-)
diff --git a/hdl_core/src/main/java/com/hdl/sdk/hdl_core/Util/TransformUtil/HDLUtlis.java b/hdl_core/src/main/java/com/hdl/sdk/hdl_core/Util/TransformUtil/HDLUtlis.java
index 514bda7..e46a12e 100644
--- a/hdl_core/src/main/java/com/hdl/sdk/hdl_core/Util/TransformUtil/HDLUtlis.java
+++ b/hdl_core/src/main/java/com/hdl/sdk/hdl_core/Util/TransformUtil/HDLUtlis.java
@@ -55,17 +55,26 @@
* @return
*/
public static float byteToFloat(byte b1, byte b2, byte b3, byte b4) {
- byte[] mByte = new byte[4];
- mByte[0] = b1;
- mByte[1] = b2;
- mByte[2] = b3;
- mByte[3] = b4;
+ byte[] mByte = new byte[]{b4, b3, b2, b1};
return byteArrayToFloat(mByte);
}
-
- public static double byteToDouble(byte b1, byte b2, byte b3, byte b4) {
- return b1 * 256 * 256 * 256 + b2 * 256 * 256 + b3 * 256 + b4;
+ /**
+ * 鏃犵鍙�4Byte鏁村舰
+ */
+ public static float byteToFloat_UnsignedInteger(byte b1, byte b2, byte b3, byte b4) {
+ return (b1 & 0xFF) * 256 * 256 * 256 + (b2 & 0xFF) * 256 * 256 + (b3 & 0xFF) * 256 + (b4 & 0xFF);
+ }
+ /**
+ * 鏈夌鍙�4Byte鏁村舰
+ */
+ public static float byteToFloat_SignedInteger(byte b1, byte b2, byte b3, byte b4) {
+ float mfloat = (b1 & 0x7F) * 256 * 256 * 256 + (b2 & 0xFF) * 256 * 256 + (b3 & 0xFF) * 256 + (b4 & 0xFF);
+ if(((b1 & 0xFF) >> 7) > 0){
+ return -mfloat;
+ }else{
+ return mfloat;
+ }
}
@@ -108,5 +117,30 @@
return getByteArray(intbits);
}
+ /**
+ * byte[4]鏁扮粍 杞崲涓篺loat绫诲瀷
+ * @param sign 鏁版嵁绫诲瀷 0淇濈暀 1鏃犵鍙�4Byte鏁村舰 2鏈夌鍙�4Byte鏁村舰 3Float褰紙浠Ｂ憋級 娉細灏忔暟鐐圭殑鐢ㄦ诞鐐硅〃绀猴紝鏁存暟涓嶈〃绀哄皬鏁扮偣
+ * @param b1~b5 sign == 3 鐨勬椂鍊� 鏁版嵁鍊奸珮浣嶅湪鍓嶏紝浣庝綅鍦ㄥ悗 锛堟暟鎹粠鍚庡線鍓嶈杞斤紝渚嬪100鐨勫�硷紝搴旇鏃�0x00000064锛�
+ * @return
+ */
+ public static float byteArrayToFloatWithSign(byte sign, byte b1, byte b2, byte b3, byte b4) {
+ try {
+
+ if(sign == 1){//1鏃犵鍙�4Byte鏁村舰
+ return byteToFloat_UnsignedInteger(b1, b2, b3, b4);
+ }else if(sign == 2){//2鏈夌鍙�4Byte鏁村舰
+ return byteToFloat_SignedInteger(b1, b2, b3, b4);
+ }else if(sign == 3){//3Float褰紙浠Ｂ憋級
+ byte[] mByte = new byte[]{b4, b3, b2, b1};
+ return byteArrayToFloat(mByte);
+ }else{
+ return byteToFloat_UnsignedInteger(b1, b2, b3, b4);
+ }
+
+ } catch (Exception e) {
+ e.printStackTrace();
+ return 0;
+ }
+ }
}
--
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