diff options
Diffstat (limited to 'src/lib8tion.h')
| -rw-r--r-- | src/lib8tion.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/src/lib8tion.h b/src/lib8tion.h index 80e27100..43dedbc0 100644 --- a/src/lib8tion.h +++ b/src/lib8tion.h @@ -33,7 +33,7 @@ FASTLED_NAMESPACE_BEGIN qsub8( i, j) == MAX( (i - j), 0 ) - Saturating signed 8-bit ("7-bit") add. - qadd7( i, j) == MIN( (i + j), 0x7F) + qadd7( i, j) == MAX( MIN( (i + j), 0x7F), -0x80) - Scaling (down) of unsigned 8- and 16- bit values. @@ -99,7 +99,7 @@ FASTLED_NAMESPACE_BEGIN - Fast 8-bit "easing in/out" function. - ease8InOutCubic(x) == 3(x^i) - 2(x^3) + ease8InOutCubic(x) == 3(x^2) - 2(x^3) ease8InOutApprox(x) == faster, rougher, approximation of cubic easing ease8InOutQuad(x) == quadratic (vs cubic) easing @@ -208,8 +208,10 @@ Lib8tion is pronounced like 'libation': lie-BAY-shun #define SUB8_C 1 #define EASE8_C 1 #define AVG8_C 1 +#define AVG8R_C 1 #define AVG7_C 1 #define AVG16_C 1 +#define AVG16R_C 1 #define AVG15_C 1 #define BLEND8_C 1 @@ -231,8 +233,10 @@ Lib8tion is pronounced like 'libation': lie-BAY-shun #define SUB8_C 1 #define EASE8_C 1 #define AVG8_C 1 +#define AVG8R_C 1 #define AVG7_C 1 #define AVG16_C 1 +#define AVG16R_C 1 #define AVG15_C 1 #define BLEND8_C 1 @@ -249,8 +253,10 @@ Lib8tion is pronounced like 'libation': lie-BAY-shun #define ADD8_C 0 #define SUB8_C 0 #define AVG8_C 0 +#define AVG8R_C 0 #define AVG7_C 0 #define AVG16_C 0 +#define AVG16R_C 0 #define AVG15_C 0 #define QADD8_AVRASM 1 @@ -260,8 +266,10 @@ Lib8tion is pronounced like 'libation': lie-BAY-shun #define ADD8_AVRASM 1 #define SUB8_AVRASM 1 #define AVG8_AVRASM 1 +#define AVG8R_AVRASM 1 #define AVG7_AVRASM 1 #define AVG16_AVRASM 1 +#define AVG16R_AVRASM 1 #define AVG15_AVRASM 1 // Note: these require hardware MUL instruction @@ -319,8 +327,10 @@ Lib8tion is pronounced like 'libation': lie-BAY-shun #define SUB8_C 1 #define EASE8_C 1 #define AVG8_C 1 +#define AVG8R_C 1 #define AVG7_C 1 #define AVG16_C 1 +#define AVG16R_C 1 #define AVG15_C 1 #define BLEND8_C 1 @@ -732,9 +742,9 @@ LIB8STATIC uint8_t ease8InOutApprox( fract8 i) "Ldone_%=: \n\t" - : [i] "+&a" (i) + : [i] "+a" (i) : - : "r0", "r1" + : "r0" ); return i; } @@ -744,7 +754,7 @@ LIB8STATIC uint8_t ease8InOutApprox( fract8 i) -/// triwave8: triangle (sawtooth) wave generator. Useful for +/// triwave8: triangle wave generator. Useful for /// turning a one-byte ever-increasing value into a /// one-byte value that oscillates up and down. /// |