Add RL64 and RL64S endianness helper macros

[libsigrok.git] / src / libsigrok-internal.h

diff --git a/src/libsigrok-internal.h b/src/libsigrok-internal.h
index f3ee2e3b3ec11f820a93d85ea53d8cceb9595971..12b556aec849e46bc085db574e7f1a0741825d36 100644 (file)
--- a/src/libsigrok-internal.h
+++ b/src/libsigrok-internal.h
@@ -65,7 +65,7 @@ struct zip_stat;
  * @param x a pointer to the input memory
  * @return the corresponding unsigned integer
  */
-#define RB16(x)  (((unsigned)((const uint8_t*)(x))[0] <<  8) |  \
+#define RB16(x)  (((unsigned)((const uint8_t*)(x))[0] <<  8) | \
                    (unsigned)((const uint8_t*)(x))[1])
 
 /**
@@ -76,6 +76,15 @@ struct zip_stat;
 #define RL16(x)  (((unsigned)((const uint8_t*)(x))[1] <<  8) | \
                    (unsigned)((const uint8_t*)(x))[0])
 
+/**
+ * Read a 16 bits big endian signed integer out of memory.
+ * @param x a pointer to the input memory
+ * @return the corresponding signed integer
+ */
+#define RB16S(x)  ((int16_t) \
+                  (((unsigned)((const uint8_t*)(x))[0] <<  8) | \
+                    (unsigned)((const uint8_t*)(x))[1]))
+
 /**
  * Read a 16 bits little endian signed integer out of memory.
  * @param x a pointer to the input memory
@@ -91,8 +100,8 @@ struct zip_stat;
  * @return the corresponding unsigned integer
  */
 #define RB32(x)  (((unsigned)((const uint8_t*)(x))[0] << 24) | \
-                  ((unsigned)((const uint8_t*)(x))[1] << 16) |  \
-                  ((unsigned)((const uint8_t*)(x))[2] <<  8) |  \
+                  ((unsigned)((const uint8_t*)(x))[1] << 16) | \
+                  ((unsigned)((const uint8_t*)(x))[2] <<  8) | \
                    (unsigned)((const uint8_t*)(x))[3])
 
 /**
@@ -101,10 +110,21 @@ struct zip_stat;
  * @return the corresponding unsigned integer
  */
 #define RL32(x)  (((unsigned)((const uint8_t*)(x))[3] << 24) | \
-                  ((unsigned)((const uint8_t*)(x))[2] << 16) |  \
-                  ((unsigned)((const uint8_t*)(x))[1] <<  8) |  \
+                  ((unsigned)((const uint8_t*)(x))[2] << 16) | \
+                  ((unsigned)((const uint8_t*)(x))[1] <<  8) | \
                    (unsigned)((const uint8_t*)(x))[0])
 
+/**
+ * Read a 32 bits big endian signed integer out of memory.
+ * @param x a pointer to the input memory
+ * @return the corresponding signed integer
+ */
+#define RB32S(x)  ((int32_t) \
+                 (((unsigned)((const uint8_t*)(x))[0] << 24) | \
+                  ((unsigned)((const uint8_t*)(x))[1] << 16) | \
+                  ((unsigned)((const uint8_t*)(x))[2] <<  8) | \
+                   (unsigned)((const uint8_t*)(x))[3]))
+
 /**
  * Read a 32 bits little endian signed integer out of memory.
  * @param x a pointer to the input memory
@@ -112,10 +132,53 @@ struct zip_stat;
  */
 #define RL32S(x)  ((int32_t) \
                  (((unsigned)((const uint8_t*)(x))[3] << 24) | \
-                  ((unsigned)((const uint8_t*)(x))[2] << 16) |  \
-                  ((unsigned)((const uint8_t*)(x))[1] <<  8) |  \
+                  ((unsigned)((const uint8_t*)(x))[2] << 16) | \
+                  ((unsigned)((const uint8_t*)(x))[1] <<  8) | \
                    (unsigned)((const uint8_t*)(x))[0]))
 
+/**
+ * Read a 64 bits big endian unsigned integer out of memory.
+ * @param x a pointer to the input memory
+ * @return the corresponding unsigned integer
+ */
+#define RB64(x)  (((uint64_t)((const uint8_t*)(x))[0] << 56) | \
+                  ((uint64_t)((const uint8_t*)(x))[1] << 48) | \
+                  ((uint64_t)((const uint8_t*)(x))[2] << 40) | \
+                  ((uint64_t)((const uint8_t*)(x))[3] << 32) | \
+                  ((uint64_t)((const uint8_t*)(x))[4] << 24) | \
+                  ((uint64_t)((const uint8_t*)(x))[5] << 16) | \
+                  ((uint64_t)((const uint8_t*)(x))[6] <<  8) | \
+                   (uint64_t)((const uint8_t*)(x))[7])
+
+/**
+ * Read a 64 bits little endian unsigned integer out of memory.
+ * @param x a pointer to the input memory
+ * @return the corresponding unsigned integer
+ */
+#define RL64(x)  (((uint64_t)((const uint8_t*)(x))[7] << 56) | \
+                  ((uint64_t)((const uint8_t*)(x))[6] << 48) | \
+                  ((uint64_t)((const uint8_t*)(x))[5] << 40) | \
+                  ((uint64_t)((const uint8_t*)(x))[4] << 32) | \
+                  ((uint64_t)((const uint8_t*)(x))[3] << 24) | \
+                  ((uint64_t)((const uint8_t*)(x))[2] << 16) | \
+                  ((uint64_t)((const uint8_t*)(x))[1] <<  8) | \
+                   (uint64_t)((const uint8_t*)(x))[0])
+
+/**
+ * Read a 64 bits little endian signed integer out of memory.
+ * @param x a pointer to the input memory
+ * @return the corresponding unsigned integer
+ */
+#define RL64S(x)  ((int64_t) \
+                 (((uint64_t)((const uint8_t*)(x))[7] << 56) | \
+                  ((uint64_t)((const uint8_t*)(x))[6] << 48) | \
+                  ((uint64_t)((const uint8_t*)(x))[5] << 40) | \
+                  ((uint64_t)((const uint8_t*)(x))[4] << 32) | \
+                  ((uint64_t)((const uint8_t*)(x))[3] << 24) | \
+                  ((uint64_t)((const uint8_t*)(x))[2] << 16) | \
+                  ((uint64_t)((const uint8_t*)(x))[1] <<  8) | \
+                   (uint64_t)((const uint8_t*)(x))[0]))
+
 /**
  * Read a 32 bits big endian float out of memory.
  * @param x a pointer to the input memory