Don't use vdotq_s32 if it's not available #139
Merged
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dotprod
extensions aren't available on some ARM CPUs (e.g. Raspberry Pi 4), so check for them and only use them if they're available.Reintroduces the code removed in 84d9015 if
__ARM_FEATURE_DOTPROD
isn't defined.Fixes my and other problems reported in the comments of #58.