54 lines
958 B
C
54 lines
958 B
C
#ifdef __arm__
|
|
|
|
#include <asm/hwcap.h>
|
|
#include <sys/auxv.h>
|
|
|
|
int supports_neon_vfpv3(void)
|
|
{
|
|
long hwcaps = getauxval(AT_HWCAP);
|
|
return (hwcaps & HWCAP_ARM_NEON) && (hwcaps & HWCAP_ARM_VFPv3);
|
|
}
|
|
|
|
int supports_neon_vfpv4(void)
|
|
{
|
|
long hwcaps = getauxval(AT_HWCAP);
|
|
return (hwcaps & HWCAP_ARM_NEON) && (hwcaps & HWCAP_ARM_VFPv4);
|
|
}
|
|
|
|
#endif /* __arm__ */
|
|
|
|
#ifdef __x86_64__
|
|
|
|
#include <cpuid.h>
|
|
#include <stdio.h>
|
|
|
|
int supports_x86_avx(void)
|
|
{
|
|
unsigned int maxlevel = __get_cpuid_max (0, 0);
|
|
if (maxlevel < 1)
|
|
return 0;
|
|
|
|
unsigned eax, ebx, ecx, edx;
|
|
__cpuid(1, eax, ebx, ecx, edx);
|
|
if (!(ecx & bit_AVX))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int supports_x86_avx2(void)
|
|
{
|
|
unsigned int maxlevel = __get_cpuid_max (0, 0);
|
|
if (maxlevel < 7)
|
|
return 0;
|
|
|
|
unsigned eax, ebx, ecx, edx;
|
|
__cpuid_count(7, 0, eax, ebx, ecx, edx);
|
|
if (!(ebx & bit_AVX2))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
#endif
|