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+/*===---- __wmmintrin_pclmul.h - PCMUL intrinsics ---------------------------===
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+#ifndef _WMMINTRIN_PCLMUL_H
+#define _WMMINTRIN_PCLMUL_H
+
+/// \brief Multiplies two 64-bit integer values, which are selected from source
+/// operands using the immediate-value operand. The multiplication is a
+/// carry-less multiplication, and the 128-bit integer product is stored in
+/// the destination.
+///
+/// \headerfile <x86intrin.h>
+///
+/// \code
+/// __m128i _mm_clmulepi64_si128(__m128i __X, __m128i __Y, const int __I);
+/// \endcode
+///
+/// This intrinsic corresponds to the \c VPCLMULQDQ instruction.
+///
+/// \param __X
+/// A 128-bit vector of [2 x i64] containing one of the source operands.
+/// \param __Y
+/// A 128-bit vector of [2 x i64] containing one of the source operands.
+/// \param __I
+/// An immediate value specifying which 64-bit values to select from the
+/// operands.
+/// Bit 0 is used to select a value from operand __X,
+/// and bit 4 is used to select a value from operand __Y:
+/// Bit[0]=0 indicates that bits[63:0] of operand __X are used.
+/// Bit[0]=1 indicates that bits[127:64] of operand __X are used.
+/// Bit[4]=0 indicates that bits[63:0] of operand __Y are used.
+/// Bit[4]=1 indicates that bits[127:64] of operand __Y are used.
+/// \returns The 128-bit integer vector containing the result of the carry-less
+/// multiplication of the selected 64-bit values.
+#define _mm_clmulepi64_si128(__X, __Y, __I) \
+ ((__m128i)__builtin_ia32_pclmulqdq128((__v2di)(__m128i)(__X), \
+ (__v2di)(__m128i)(__Y), (char)(__I)))
+
+#endif /* _WMMINTRIN_PCLMUL_H */