[SYCL][ESIMD] Add test for esimd_trunc function.

SYCL/ESIMD/ext_math.cpp

@@ -53,7 +53,7 @@ struct InitDataInRange0_5 {
 
 // --- Math operation identification
 
-enum class MathOp { sin, cos, exp, sqrt, inv, log, rsqrt };
+enum class MathOp { sin, cos, exp, sqrt, inv, log, rsqrt, trunc };
 
 // --- Template functions calculating given math operation on host and device
 
@@ -71,6 +71,16 @@ template <MathOp Op> float HostMathFunc(float X);
     }                                                                          \
   }
 
+// The same as above but adds explicit template parameter for esimd_##Op.
+#define DEFINE_ESIMD_RT_OP(Op, HostOp)                                         \
+  template <> float HostMathFunc<MathOp::Op>(float X) { return HostOp(X); }    \
+  template <int VL> struct DeviceMathFunc<VL, MathOp::Op> {                    \
+    simd<float, VL>                                                            \
+    operator()(const simd<float, VL> &X) const SYCL_ESIMD_FUNCTION {           \
+      return esimd_##Op<float, VL>(X);                                         \
+    }                                                                          \
+  }
+
 #define DEFINE_SIMD_OVERLOADED_STD_SYCL_OP(Op, HostOp)                         \
   template <> float HostMathFunc<MathOp::Op>(float X) { return HostOp(X); }    \
   template <int VL> struct DeviceMathFunc<VL, MathOp::Op> {                    \
@@ -87,6 +97,7 @@ DEFINE_SIMD_OVERLOADED_STD_SYCL_OP(log, log);
 DEFINE_ESIMD_OP(inv, 1.0f /);
 DEFINE_ESIMD_OP(sqrt, sqrt);
 DEFINE_ESIMD_OP(rsqrt, 1.0f / sqrt);
+DEFINE_ESIMD_RT_OP(trunc, trunc);
 
 // --- Generic kernel calculating an extended math operation on array elements
 
@@ -182,6 +193,7 @@ template <int VL> bool test(queue &Q) {
   Pass &= test<MathOp::cos, VL>(Q, "cos", InitDataFuncWide{});
   Pass &= test<MathOp::exp, VL>(Q, "exp", InitDataInRange0_5{});
   Pass &= test<MathOp::log, VL>(Q, "log", InitDataFuncWide{});
+  Pass &= test<MathOp::trunc, VL>(Q, "trunc", InitDataFuncWide{});
   return Pass;
 }