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J. Nick Koston
cdde0abec7
Follow-up to edb2145a addressing three points:
1. Hoist the in-range check out of the logging helper. The loop now tests
`value < 0.0f || value > 1.0f` inline and only calls the out-of-line
log_out_of_range_and_clamp_ helper on the cold path. Hot path (value in
range) skips the call8 and the register spill/reload around it, which
matters because HA automations can drive perform() at high frequency.
2. Iterate only set bits with __builtin_ctz + (active & active-1). Common
calls with one or two flags set now exit the loop after one or two
iterations instead of always scanning all eight slots.
3. Replace the uint8_t* pointer arithmetic with typed float arrays aliasing
&brightness_ in each struct. Per-field static_asserts (expanded via a
local macro) now catch reorders of any single member in either struct,
not just reorders at the endpoints. Compiles to the same machine code as
the uint8_t* version.
Size delta vs. prior commit (isolated light build):
ESP32-IDF: validate_ +60 B, helper -29 B, net +31 B
ESP8266: validate_ +72 B, helper -42 B, net +30 B
Still a net win vs. dev on both targets (ESP32-IDF -91 B, ESP8266 -22 B).
