This adds macro to extend signed 64bit value to signed 128bit value.
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
Changes:
v2:
* (.hi = (a >> 63) ? -1 : 0) changed to (.hi = (a < 0) ? -1 : 0)
---
include/qemu/int128.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/qemu/int128.h b/include/qemu/int128.h
index 9ed47aa..ef87e5e 100644
--- a/include/qemu/int128.h
+++ b/include/qemu/int128.h
@@ -38,6 +38,11 @@ static inline Int128 int128_2_64(void)
return (Int128) { 0, 1 };
}
+static inline Int128 int128_exts64(int64_t a)
+{
+ return (Int128) { .lo = a, .hi = (a < 0) ? -1 : 0 };
+}
+
static inline Int128 int128_and(Int128 a, Int128 b)
{
return (Int128) { a.lo & b.lo, a.hi & b.hi };
--
1.8.4.rc4
