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      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 __POPCNT__
     25 #error "POPCNT instruction set not enabled"
     26 #endif
     27 
     28 #ifndef _POPCNTINTRIN_H
     29 #define _POPCNTINTRIN_H
     30 
     31 static __inline__ int __attribute__((__always_inline__, __nodebug__))
     32 _mm_popcnt_u32(unsigned int __A)
     33 {
     34   return __builtin_popcount(__A);
     35 }
     36 
     37 #ifdef __x86_64__
     38 static __inline__ long long __attribute__((__always_inline__, __nodebug__))
     39 _mm_popcnt_u64(unsigned long long __A)
     40 {
     41   return __builtin_popcountll(__A);
     42 }
     43 #endif /* __x86_64__ */
     44 
     45 #endif /* _POPCNTINTRIN_H */
     46