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