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93 lines
2.1 KiB
93 lines
2.1 KiB
#include<simdfuncs.h> |
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#include<stdio.h> |
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/* |
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* A function that checks at runtime which simd accelerations are |
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* available and calls the best one. Falls |
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* back to plain C implementation if SIMD is not available. |
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*/ |
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int main(int argc, char **argv) { |
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float four[4] = {2.0, 3.0, 4.0, 5.0}; |
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const float expected[4] = {3.0, 4.0, 5.0, 6.0}; |
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void (*fptr)(float[4]) = NULL; |
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const char *type; |
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int i; |
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/* Add here. The first matched one is used so put "better" instruction |
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* sets at the top. |
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*/ |
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#if HAVE_NEON |
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if(fptr == NULL && neon_available()) { |
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fptr = increment_neon; |
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type = "NEON"; |
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} |
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#endif |
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#if HAVE_AVX2 |
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if(fptr == NULL && avx2_available()) { |
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fptr = increment_avx2; |
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type = "AVX2"; |
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} |
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#endif |
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#if HAVE_AVX |
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if(fptr == NULL && avx_available()) { |
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fptr = increment_avx; |
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type = "AVX"; |
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} |
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#endif |
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#if HAVE_SSE42 |
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if(fptr == NULL && sse42_available()) { |
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fptr = increment_sse42; |
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type = "SSE42"; |
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} |
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#endif |
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#if HAVE_SSE41 |
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if(fptr == NULL && sse41_available()) { |
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fptr = increment_sse41; |
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type = "SSE41"; |
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} |
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#endif |
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#if HAVE_SSSE3 |
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if(fptr == NULL && ssse3_available()) { |
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fptr = increment_ssse3; |
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type = "SSSE3"; |
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} |
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#endif |
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#if HAVE_SSE3 |
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if(fptr == NULL && sse3_available()) { |
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fptr = increment_sse3; |
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type = "SSE3"; |
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} |
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#endif |
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#if HAVE_SSE2 |
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if(fptr == NULL && sse2_available()) { |
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fptr = increment_sse2; |
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type = "SSE2"; |
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} |
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#endif |
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#if HAVE_SSE |
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if(fptr == NULL && sse_available()) { |
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fptr = increment_sse; |
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type = "SSE"; |
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} |
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#endif |
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#if HAVE_MMX |
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if(fptr == NULL && mmx_available()) { |
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fptr = increment_mmx; |
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type = "MMX"; |
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} |
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#endif |
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if(fptr == NULL) { |
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fptr = increment_fallback; |
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type = "fallback"; |
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} |
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printf("Using %s.\n", type); |
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fptr(four); |
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for(i=0; i<4; i++) { |
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if(four[i] != expected[i]) { |
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printf("Increment function failed, got %f expected %f.\n", four[i], expected[i]); |
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return 1; |
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} |
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} |
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return 0; |
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}
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