Fix MaskBool initialization on SSE

Fixes VcDevel#255
amyspark · Sep 2, 2021 · 9130778 · 9130778
1 parent 811e2ee
commit 9130778
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diff --git a/Vc/sse/mask.h b/Vc/sse/mask.h
@@ -28,6 +28,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef VC_SSE_MASK_H_
 #define VC_SSE_MASK_H_
 
+#include <cmath>
+
 #include "intrinsics.h"
 #include "../common/maskbool.h"
 #include "detail.h"
@@ -222,7 +224,7 @@ template <typename T> class Mask<T, VectorAbi::Sse>
     friend reference;
     static Vc_INTRINSIC Vc_PURE value_type get(const Mask &m, int i) noexcept
     {
-        return MaskBool(m.d.m(i));
+        return m.toInt() & (1 << i);
     }
     template <typename U>
     static Vc_INTRINSIC void set(Mask &m, int i,

diff --git a/tests/mask.cpp b/tests/mask.cpp
@@ -478,6 +478,15 @@ TEST_TYPES(V, testCompareOperators, AllVectors) /*{{{*/
         VERIFY(!(k2 != k2)) << k << k2;
     }
 }
+
+TEST_TYPES(V, testMaskDefined, AllVectors)
+{
+    V a(1);
+    V b(2);
+    auto r = a < b;
+    VERIFY(r[0] == true);
+}
+
 /*}}}*/
 
 // vim: foldmethod=marker