1 /*===---- popcntintrin.h - POPCNT intrinsics -------------------------------=== 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to deal 5 * in the Software without restriction, including without limitation the rights 6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 * copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 * THE SOFTWARE. 20 * 21 *===-----------------------------------------------------------------------=== 22 */ 23 24 #ifndef _POPCNTINTRIN_H 25 #define _POPCNTINTRIN_H 26 27 /* Define the default attributes for the functions in this file. */ 28 #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("popcnt"))) 29 30 /// \brief Counts the number of bits in the source operand having a value of 1. 31 /// 32 /// \headerfile <x86intrin.h> 33 /// 34 /// This intrinsic corresponds to the \c POPCNT instruction. 35 /// 36 /// \param __A 37 /// An unsigned 32-bit integer operand. 38 /// \returns A 32-bit integer containing the number of bits with value 1 in the 39 /// source operand. 40 static __inline__ int __DEFAULT_FN_ATTRS 41 _mm_popcnt_u32(unsigned int __A) 42 { 43 return __builtin_popcount(__A); 44 } 45 46 /// \brief Counts the number of bits in the source operand having a value of 1. 47 /// 48 /// \headerfile <x86intrin.h> 49 /// 50 /// This intrinsic corresponds to the \c POPCNT instruction. 51 /// 52 /// \param __A 53 /// A signed 32-bit integer operand. 54 /// \returns A 32-bit integer containing the number of bits with value 1 in the 55 /// source operand. 56 static __inline__ int __DEFAULT_FN_ATTRS 57 _popcnt32(int __A) 58 { 59 return __builtin_popcount(__A); 60 } 61 62 #ifdef __x86_64__ 63 /// \brief Counts the number of bits in the source operand having a value of 1. 64 /// 65 /// \headerfile <x86intrin.h> 66 /// 67 /// This intrinsic corresponds to the \c POPCNT instruction. 68 /// 69 /// \param __A 70 /// An unsigned 64-bit integer operand. 71 /// \returns A 64-bit integer containing the number of bits with value 1 in the 72 /// source operand. 73 static __inline__ long long __DEFAULT_FN_ATTRS 74 _mm_popcnt_u64(unsigned long long __A) 75 { 76 return __builtin_popcountll(__A); 77 } 78 79 /// \brief Counts the number of bits in the source operand having a value of 1. 80 /// 81 /// \headerfile <x86intrin.h> 82 /// 83 /// This intrinsic corresponds to the \c POPCNT instruction. 84 /// 85 /// \param __A 86 /// A signed 64-bit integer operand. 87 /// \returns A 64-bit integer containing the number of bits with value 1 in the 88 /// source operand. 89 static __inline__ long long __DEFAULT_FN_ATTRS 90 _popcnt64(long long __A) 91 { 92 return __builtin_popcountll(__A); 93 } 94 #endif /* __x86_64__ */ 95 96 #undef __DEFAULT_FN_ATTRS 97 98 #endif /* _POPCNTINTRIN_H */ 99
