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Parts and driver boost from @npsm
This commit is contained in:
Sami Korhonen 2016-09-10 09:51:18 +03:00
parent bd452b58b8
commit 1f8805cdf0
54 changed files with 7756 additions and 41 deletions
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4
src/main/common/utils.h
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@ -32,7 +32,9 @@
#define EXPAND_I(x) x
#define EXPAND(x) EXPAND_I(x)
#if !defined(USE_HAL_DRIVER)
#define UNUSED(x) (void)(x)
#endif
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
#define BIT(x) (1 << (x))
@ -43,11 +45,11 @@ http://resnet.uoregon.edu/~gurney_j/jmpc/bitwise.html
#define BITCOUNT(x) (((BX_(x)+(BX_(x)>>4)) & 0x0F0F0F0F) % 255)
#define BX_(x) ((x) - (((x)>>1)&0x77777777) - (((x)>>2)&0x33333333) - (((x)>>3)&0x11111111))
/*
* https://groups.google.com/forum/?hl=en#!msg/comp.lang.c/attFnqwhvGk/sGBKXvIkY3AJ
* Return (v ? floor(log2(v)) : 0) when 0 <= v < 1<<[8, 16, 32, 64].
* Inefficient algorithm, intended for compile-time constants.
*/
#define LOG2_8BIT(v) (8 - 90/(((v)/4+14)|1) - 2/((v)/2+1))
#define LOG2_16BIT(v) (8*((v)>255) + LOG2_8BIT((v) >>8*((v)>255)))
#define LOG2_32BIT(v) (16*((v)>65535L) + LOG2_16BIT((v)*1L >>16*((v)>65535L)))