[Core] RP2040: use built-in integer hardware divider and optimized i64 multiplication #18464
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daskygit
approved these changes
Oct 4, 2022
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Nice! I've been using this for several days now without any hick-ups or crashes therefore this should be save to merge?! |
…plication The rp2040 cortex m0+ cores do not implement an integer divider itself, but instead the rp2040 provides two on-chip hardware dividers as an extra peripheral. To use those the GCC arm-v6 eabi integer division and modulo built-ins have to be replaced with implementations that utilize them. An optimized i64 multiplication implementation is provided as well.
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tzarc
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Oct 4, 2022
ramonimbao
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Nov 28, 2022
…4 multiplication (qmk#18464)
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Description
The rp2040 cortex m0+ cores do not implement an integer divider itself, but instead the rp2040 provides two on-chip hardware dividers as an extra peripheral. To use those the GCC arm-v6 eabi integer division and modulo built-ins have to be replaced with implementations that utilize them. An optimized i64 multiplication implementation is provided as well.
these functions are implemented directly and do not need the pico vtable mechanism as the float/double functions
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