deepin-ocr/3rdparty/opencv-4.5.4/cmake/checks/cpu_neon.cpp
wangzhengyang 718c41634f feat: 切换后端至PaddleOCR-NCNN,切换工程为CMake
1.项目后端整体迁移至PaddleOCR-NCNN算法,已通过基本的兼容性测试
2.工程改为使用CMake组织,后续为了更好地兼容第三方库,不再提供QMake工程
3.重整权利声明文件,重整代码工程,确保最小化侵权风险

Log: 切换后端至PaddleOCR-NCNN,切换工程为CMake
Change-Id: I4d5d2c5d37505a4a24b389b1a4c5d12f17bfa38c
2022-05-10 10:22:11 +08:00

32 lines
724 B
C++

#include <stdio.h>
#if defined _WIN32 && (defined(_M_ARM) || defined(_M_ARM64))
# include <Intrin.h>
# include <arm_neon.h>
# define CV_NEON 1
#elif defined(__ARM_NEON__) || (defined (__ARM_NEON) && defined(__aarch64__))
# include <arm_neon.h>
# define CV_NEON 1
#endif
// MSVC 2019 bug. Details: https://github.com/opencv/opencv/pull/16027
void test_aliased_type(const uint8x16_t& a) { }
void test_aliased_type(const int8x16_t& a) { }
#if defined CV_NEON
int test()
{
const float src[] = { 0.0f, 0.0f, 0.0f, 0.0f };
float32x4_t val = vld1q_f32((const float32_t*)(src));
return (int)vgetq_lane_f32(val, 0);
}
#else
#error "NEON is not supported"
#endif
int main()
{
printf("%d\n", test());
return 0;
}