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https://github.com/CTCaer/hekate.git
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185526d134
BDK will allow developers to use the full collection of drivers, with limited editing, if any, for making payloads for Nintendo Switch. Using a single source for everything will also help decoupling Switch specific code and easily port it to other Tegra X1/X1+ platforms. And maybe even to lower targets. Everything is now centrilized into bdk folder. Every module or project can utilize it by simply including it. This is just the start and it will continue to improve.
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/**
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* @file math_base.h
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*
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*/
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#ifndef LV_MATH_H
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#define LV_MATH_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include <stdint.h>
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/*********************
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* DEFINES
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*********************/
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#define LV_MATH_MIN(a,b) ((a) < (b) ? (a) : (b))
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#define LV_MATH_MAX(a,b) ((a) > (b) ? (a) : (b))
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#define LV_MATH_ABS(x) ((x) > 0 ? (x) : (-(x)))
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#define LV_TRIGO_SIN_MAX 32767
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#define LV_TRIGO_SHIFT 15 /* >> LV_TRIGO_SHIFT to normalize*/
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#define LV_BEZIER_VAL_MAX 1024 /*Max time in Bezier functions (not [0..1] to use integers) */
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#define LV_BEZIER_VAL_SHIFT 10 /*log2(LV_BEZIER_VAL_MAX): used to normalize up scaled values*/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Convert a number to string
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* @param num a number
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* @param buf pointer to a `char` buffer. The result will be stored here (max 10 elements)
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* @return same as `buf` (just for convenience)
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*/
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char * lv_math_num_to_str(int32_t num, char * buf);
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/**
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* Return with sinus of an angle
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* @param angle
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* @return sinus of 'angle'. sin(-90) = -32767, sin(90) = 32767
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*/
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int16_t lv_trigo_sin(int16_t angle);
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/**
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* Calculate a value of a Cubic Bezier function.
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* @param t time in range of [0..LV_BEZIER_VAL_MAX]
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* @param u0 start values in range of [0..LV_BEZIER_VAL_MAX]
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* @param u1 control value 1 values in range of [0..LV_BEZIER_VAL_MAX]
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* @param u2 control value 2 in range of [0..LV_BEZIER_VAL_MAX]
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* @param u3 end values in range of [0..LV_BEZIER_VAL_MAX]
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* @return the value calculated from the given parameters in range of [0..LV_BEZIER_VAL_MAX]
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*/
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int32_t lv_bezier3(uint32_t t, int32_t u0, int32_t u1, int32_t u2, int32_t u3);
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/**********************
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* MACROS
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**********************/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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