Jan/WLED_MM_Infinity
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desperate attempt for 8266 survival

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* bring back UREAL_MATH (inaccuate, but smaller flash)
* typing to tune feature sets so they fit into small 8266 models
This commit is contained in:
Frank
2025-11-24 15:50:04 +01:00
parent eba5c2f8a1
commit 384cbec86e
3 changed files with 49 additions and 22 deletions
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16
wled00/fcn_declare.h
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@@ -484,16 +484,19 @@ uint8_t cos8_t(uint8_t theta);
float sin_approx(float theta); // uses integer math (converted to float), accuracy +/-0.0015 (compared to sinf())
float cos_approx(float theta);
float tan_approx(float x);
//float atan2_t(float y, float x);
//float acos_t(float x);
//float asin_t(float x);
//template <typename T> T atan_t(T x);
//float floor_t(float x);
//float fmod_t(float num, float denom);
#if defined(WLED_USE_UNREAL_MATH)
float atan2_t(float y, float x);
float acos_t(float x);
float asin_t(float x);
template <typename T> T atan_t(T x);
float floor_t(float x);
float fmod_t(float num, float denom);
#endif
#define sin_t sin_approx
#define cos_t cos_approx
#define tan_t tan_approx
#if !defined(WLED_USE_UNREAL_MATH)
#include <math.h> // standard math functions. use a lot of flash
#define atan2_t atan2f
#define asin_t asinf
@@ -501,6 +504,7 @@ float tan_approx(float x);
#define atan_t atanf
#define fmod_t fmodf
#define floor_t floorf
#endif
/*
#define sin_t sinf
#define cos_t cosf

2
wled00/wled_math.cpp
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@@ -110,7 +110,7 @@ float tan_approx(float x) {
return res;
}
#if 0 // WLEDMM we prefer libm functions that are accurate and fast.
#if defined(WLED_USE_UNREAL_MATH) // WLEDMM we prefer libm functions that are accurate and fast.
#define ATAN2_CONST_A 0.1963f
#define ATAN2_CONST_B 0.9817f