Thomas Debesse illwieckz
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illwieckz
/ rsqrt.c
Created
January 20, 2025 04:33
— forked from ashvardanian/rsqrt.c
Estimate the accuracy of `rsqrt` approximations in Arm NEON
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| // This script estimates the maximum errors of `rsqrt` approximation for | |
| // ARM NEON, SSE, AVX2, and AVX-512. | |
| // | |
| // Compile with Clang or GCC: | |
| // | |
| // $ gcc rsqrt.c -o rsqrt -std=c99 -lm -march=native -O3 && time ./rsqrt | |
| // $ gcc rsqrt.c -o rsqrt -std=c99 -lm -march=skylake-avx512 -O3 && time ./rsqrt | |
| // $ gcc rsqrt.c -o rsqrt -std=c99 -lm -march=haswell -O3 && time ./rsqrt | |
| // $ gcc rsqrt.c -o rsqrt -std=c99 -lm -march=westmere -O3 && time ./rsqrt | |
| // |