mirror of
https://github.com/ziglang/zig.git
synced 2024-11-27 15:42:49 +00:00
99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/*===---- popcntintrin.h - POPCNT 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 _POPCNTINTRIN_H
|
|
#define _POPCNTINTRIN_H
|
|
|
|
/* Define the default attributes for the functions in this file. */
|
|
#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("popcnt")))
|
|
|
|
/// \brief Counts the number of bits in the source operand having a value of 1.
|
|
///
|
|
/// \headerfile <x86intrin.h>
|
|
///
|
|
/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
|
|
///
|
|
/// \param __A
|
|
/// An unsigned 32-bit integer operand.
|
|
/// \returns A 32-bit integer containing the number of bits with value 1 in the
|
|
/// source operand.
|
|
static __inline__ int __DEFAULT_FN_ATTRS
|
|
_mm_popcnt_u32(unsigned int __A)
|
|
{
|
|
return __builtin_popcount(__A);
|
|
}
|
|
|
|
/// \brief Counts the number of bits in the source operand having a value of 1.
|
|
///
|
|
/// \headerfile <x86intrin.h>
|
|
///
|
|
/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
|
|
///
|
|
/// \param __A
|
|
/// A signed 32-bit integer operand.
|
|
/// \returns A 32-bit integer containing the number of bits with value 1 in the
|
|
/// source operand.
|
|
static __inline__ int __DEFAULT_FN_ATTRS
|
|
_popcnt32(int __A)
|
|
{
|
|
return __builtin_popcount(__A);
|
|
}
|
|
|
|
#ifdef __x86_64__
|
|
/// \brief Counts the number of bits in the source operand having a value of 1.
|
|
///
|
|
/// \headerfile <x86intrin.h>
|
|
///
|
|
/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
|
|
///
|
|
/// \param __A
|
|
/// An unsigned 64-bit integer operand.
|
|
/// \returns A 64-bit integer containing the number of bits with value 1 in the
|
|
/// source operand.
|
|
static __inline__ long long __DEFAULT_FN_ATTRS
|
|
_mm_popcnt_u64(unsigned long long __A)
|
|
{
|
|
return __builtin_popcountll(__A);
|
|
}
|
|
|
|
/// \brief Counts the number of bits in the source operand having a value of 1.
|
|
///
|
|
/// \headerfile <x86intrin.h>
|
|
///
|
|
/// This intrinsic corresponds to the <c> POPCNT </c> instruction.
|
|
///
|
|
/// \param __A
|
|
/// A signed 64-bit integer operand.
|
|
/// \returns A 64-bit integer containing the number of bits with value 1 in the
|
|
/// source operand.
|
|
static __inline__ long long __DEFAULT_FN_ATTRS
|
|
_popcnt64(long long __A)
|
|
{
|
|
return __builtin_popcountll(__A);
|
|
}
|
|
#endif /* __x86_64__ */
|
|
|
|
#undef __DEFAULT_FN_ATTRS
|
|
|
|
#endif /* _POPCNTINTRIN_H */
|