Jan/WLED_MM_Infinity
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const const const

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adding hints for the compiler for optimization.
In case your custom build complains about "const", just remove the keyword. based on e82f38e277, but going further :-)

* "const" class functions : function does not modify any class attributes ( --> "this" becomes const)

* __attribute__((pure)) :  function return value depends only on the parameters and/or global variables. The function does not modify any global or static variables.
* __attribute__((const)) : function only examines arguments (no globals), and has no effects except the return value. This slightly more strict than "pure"
* hot: tells the compiler "this functions is called very often"
* cold: the opposite of hot
This commit is contained in:
Frank
2024-08-07 14:58:38 +02:00
parent 273154db76
commit 7f9da309c9
14 changed files with 148 additions and 145 deletions
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wled00/led.cpp
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@@ -68,7 +68,7 @@ void toggleOnOff()
//scales the brightness with the briMultiplier factor
IRAM_ATTR_YN byte scaledBri(byte in) // WLEDMM added IRAM_ATTR_YN
IRAM_ATTR_YN __attribute__((hot)) byte scaledBri(byte in) // WLEDMM added IRAM_ATTR_YN
{
if (briMultiplier == 100) return(in); // WLEDMM shortcut
uint_fast16_t val = ((uint_fast16_t)in*(uint_fast16_t)briMultiplier)/100; // WLEDMM