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authorMartin Braun <martin.braun@ettus.com>2016-06-22 19:08:19 -0700
committerMartin Braun <martin.braun@ettus.com>2016-06-22 19:08:19 -0700
commit9caf20c29956be283b032110096a81f99a121da7 (patch)
treef7cb1696923b43cad1089634a565ebdc17ac6606 /host
parent82f4822651adca3e8e384c744bc6eb58cfe6945a (diff)
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converters: Clarifying comment re packing
Diffstat (limited to 'host')
-rw-r--r--host/lib/convert/convert_pack_sc12.cpp5
-rw-r--r--host/lib/convert/convert_unpack_sc12.cpp5
2 files changed, 10 insertions, 0 deletions
diff --git a/host/lib/convert/convert_pack_sc12.cpp b/host/lib/convert/convert_pack_sc12.cpp
index 322097e34..370e4a3e4 100644
--- a/host/lib/convert/convert_pack_sc12.cpp
+++ b/host/lib/convert/convert_pack_sc12.cpp
@@ -25,6 +25,11 @@ using namespace uhd::convert;
typedef boost::uint32_t (*towire32_type)(boost::uint32_t);
+/* C language specification requires this to be packed
+ * (i.e., line0, line1, line2 will be in adjacent memory locations).
+ * If this was not true, we'd need compiler flags here to specify
+ * alignment/packing.
+ */
struct item32_sc12_3x
{
item32_t line0;
diff --git a/host/lib/convert/convert_unpack_sc12.cpp b/host/lib/convert/convert_unpack_sc12.cpp
index 94b415355..9f7a84300 100644
--- a/host/lib/convert/convert_unpack_sc12.cpp
+++ b/host/lib/convert/convert_unpack_sc12.cpp
@@ -25,6 +25,11 @@ using namespace uhd::convert;
typedef boost::uint32_t (*tohost32_type)(boost::uint32_t);
+/* C language specification requires this to be packed
+ * (i.e., line0, line1, line2 will be in adjacent memory locations).
+ * If this was not true, we'd need compiler flags here to specify
+ * alignment/packing.
+ */
struct item32_sc12_3x
{
item32_t line0;