| 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 | /// 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 </c> 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 | #ifdef __x86_64__ |
| 47 | /// Counts the number of bits in the source operand having a value of 1. |
| 48 | /// |
| 49 | /// \headerfile <x86intrin.h> |
| 50 | /// |
| 51 | /// This intrinsic corresponds to the <c> POPCNT </c> instruction. |
| 52 | /// |
| 53 | /// \param __A |
| 54 | /// An unsigned 64-bit integer operand. |
| 55 | /// \returns A 64-bit integer containing the number of bits with value 1 in the |
| 56 | /// source operand. |
| 57 | static __inline__ long long __DEFAULT_FN_ATTRS |
| 58 | _mm_popcnt_u64(unsigned long long __A) |
| 59 | { |
| 60 | return __builtin_popcountll(__A); |
| 61 | } |
| 62 | #endif /* __x86_64__ */ |
| 63 | |
| 64 | #undef __DEFAULT_FN_ATTRS |
| 65 | |
| 66 | #endif /* __POPCNTINTRIN_H */ |
| 67 |