Attachment #710367 for bug #788184

Lines 4-23 Link Here

(-)numpy-1.20.2.orig/numpy/distutils/checks/cpu_popcnt.c (-4 / +10 lines)
4	#include <popcntintrin.h>	4	#include <popcntintrin.h>
5	#endif	5	#endif
6		6
		7	#include <stdlib.h>
		8
7	int main(void)	9	int main(void)
8	{	10	{
9	long long a = 0;	11	long long a = 0;
10	int b;	12	int b;
		13
		14	a = random();
		15	b = random();
		16
11	#ifdef _MSC_VER	17	#ifdef _MSC_VER
12	#ifdef _M_X64	18	#ifdef _M_X64
13	a = _mm_popcnt_u64(1);	19	a = _mm_popcnt_u64(a);
14	#endif	20	#endif
15	b = _mm_popcnt_u32(1);	21	b = _mm_popcnt_u32(b);
16	#else	22	#else
17	#ifdef __x86_64__	23	#ifdef __x86_64__
18	a = __builtin_popcountll(1);	24	a = __builtin_popcountll(a);
19	#endif	25	#endif
20	b = __builtin_popcount(a);	26	b = __builtin_popcount(b);
21	#endif	27	#endif
22	return (int)a + b;	28	return (int)a + b;
23	}	29	}

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