Add the unsafe variant of dcp functions to floating point library #2790
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gh-raspberrypi/pico-sdk#2790
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Similar to the implementation in pico_divider, we can add a unsafe implementation to fully skip the save and restore wrapper in
dcpvariant ofpico_floatandpico_double.This is particularly useful when integrating with RTOS (I’m porting it to Zephyr 😜), since the save/restore logic can be handled during context switches or ISR entry.