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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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cvfpu
Parametric floating-point unit with support for standard RISC-V formats and operations as well as transprecision formats.
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OpenHWGroup's CVFPU (SystemVerilog), this is used by the CV32E40P. I had a go with this but couldn't get it to synthesise in Quartus Prime Lite.
I recently saw an interesting idea in this VHDL repository which combines addition and multiplication in a single fused multiply add unit. Division and square root are combined as well. In my opinion the FMADD block needs some more pipeline stages.
I saw a particularly efficient VHDL implementation in the mrisc32-a1, though this is lacking support for rounding modes. Together with the rest of the processor this is a very interesting project, I hope that the author progresses it further.