From: Soeren Apel <redacted>
Date: Mon, 7 Dec 2015 19:26:11 +0000 (+0100)
Subject: Add RL64 and RL64S endianness helper macros
X-Git-Tag: libsigrok-0.4.0~71
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=8a66b0777ce093fcab54ae9cf89a645cc03c6731;p=libsigrok.git

Add RL64 and RL64S endianness helper macros
---

diff --git a/src/libsigrok-internal.h b/src/libsigrok-internal.h
index dc514744..12b556ae 100644
--- a/src/libsigrok-internal.h
+++ b/src/libsigrok-internal.h
@@ -150,6 +150,35 @@ struct zip_stat;
                   ((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