Squashed 'lidar/sllidar_ros2/' content from commit 3430009

git-subtree-dir: lidar/sllidar_ros2 git-subtree-split: 34300099fadfc772965962dec837bf436706188f
2026-04-22 11:51:45 +00:00
commit 457f054053
104 changed files with 16895 additions and 0 deletions
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+/*
+ *  RoboPeak Project
+ *  Copyright 2009 - 2013
+ *  
+ *  RPOS - Byte Operations
+ *
+ */
+
+#pragma once
+
+// byte swapping operations for compiling time
+
+#define __static_byteswap_16(x)  ((_u16)(				\
+	(((_u16)(x) & (_u16)0x00FFU) << 8) |			\
+	(((_u16)(x) & (_u16)0xFF00U) >> 8)))
+
+#define __static_byteswap_32(x) ((_u32)(				\
+	(((_u32)(x) & (_u32)0x000000FFUL) << 24) |		\
+	(((_u32)(x) & (_u32)0x0000FF00UL) <<  8) |		\
+	(((_u32)(x) & (_u32)0x00FF0000UL) >>  8) |		\
+	(((_u32)(x) & (_u32)0xFF000000UL) >> 24)))
+
+#define __static_byteswap_64(x) ((_u64)(				\
+	(((_u64)(x) & (_u64)0x00000000000000ffULL) << 56) |	\
+	(((_u64)(x) & (_u64)0x000000000000ff00ULL) << 40) |	\
+	(((_u64)(x) & (_u64)0x0000000000ff0000ULL) << 24) |	\
+	(((_u64)(x) & (_u64)0x00000000ff000000ULL) <<  8) |	\
+	(((_u64)(x) & (_u64)0x000000ff00000000ULL) >>  8) |	\
+	(((_u64)(x) & (_u64)0x0000ff0000000000ULL) >> 24) |	\
+	(((_u64)(x) & (_u64)0x00ff000000000000ULL) >> 40) |	\
+	(((_u64)(x) & (_u64)0xff00000000000000ULL) >> 56)))
+
+
+#define __fast_swap(a, b) do { (a) ^= (b); (b) ^= (a); (a) ^= (b); } while(0)
+
+
+static inline _u16 __byteswap_16(_u16 x)
+{
+#ifdef __arch_byteswap_16
+    return __arch_byteswap_16(x);
+#else
+    return __static_byteswap_16(x);
+#endif
+}
+
+static inline _u32 __byteswap_32(_u32 x)
+{
+#ifdef __arch_byteswap_32
+    return __arch_byteswap_32(x);
+#else
+    return __static_byteswap_32(x);
+#endif
+}
+
+static inline _u64 __byteswap_64(_u64 x)
+{
+#ifdef __arch_byteswap_64
+    return __arch_byteswap_64(x);
+#else
+    return __static_byteswap_64(x);
+#endif
+}
+
+
+#ifdef float
+static inline float __byteswap_float(float x)
+{
+#ifdef __arch_byteswap_float
+    return __arch_byteswap_float(x);
+#else
+    _u8 * raw = (_u8 *)&x;
+    __fast_swap(raw[0], raw[3]);
+    __fast_swap(raw[1], raw[2]);
+    return x;
+#endif
+}
+#endif
+
+
+#ifdef double
+static inline double __byteswap_double(double x)
+{
+#ifdef __arch_byteswap_double
+    return __arch_byteswap_double(x);
+#else
+    _u8 * raw = (_u8 *)&x;
+    __fast_swap(raw[0], raw[7]);
+    __fast_swap(raw[1], raw[6]);
+    __fast_swap(raw[2], raw[5]);
+    __fast_swap(raw[3], raw[4]);
+    return x;
+#endif
+}
+#endif