drm/amd/display: add some math functions for dcn_calc_math (327e4f12) · Commits · 戴 / test

drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -73,6 +73,17 @@ float dcn_bw_floor2(const float arg, const float significance)
		return 0;
		return ((int) (arg / significance)) * significance;
		}
		float dcn_bw_floor(const float arg)
		{
		return ((int) (arg));
		}

		float dcn_bw_ceil(const float arg)
		{
		float flr = dcn_bw_floor2(arg, 1);

		return flr + 0.00001 >= arg ? arg : flr + 1;
		}

		float dcn_bw_ceil2(const float arg, const float significance)
		{
		@@ -109,6 +120,15 @@ float dcn_bw_pow(float a, float exp)
		}
		}

		double dcn_bw_fabs(double a)
		{
		if (a > 0)
		return (a);
		else
		return (-a);
		}


		float dcn_bw_log(float a, float b)
		{
		int * const exp_ptr = (int *)(&a);

+3 −0

Original line number	Diff line number	Diff line
		@@ -31,10 +31,13 @@ float dcn_bw_min2(const float arg1, const float arg2);
		unsigned int dcn_bw_max(const unsigned int arg1, const unsigned int arg2);
		float dcn_bw_max2(const float arg1, const float arg2);
		float dcn_bw_floor2(const float arg, const float significance);
		float dcn_bw_floor(const float arg);
		float dcn_bw_ceil2(const float arg, const float significance);
		float dcn_bw_ceil(const float arg);
		float dcn_bw_max3(float v1, float v2, float v3);
		float dcn_bw_max5(float v1, float v2, float v3, float v4, float v5);
		float dcn_bw_pow(float a, float exp);
		float dcn_bw_log(float a, float b);
		double dcn_bw_fabs(double a);

		#endif /* _DCN_CALC_MATH_H_ */

+8 −0

Original line number	Diff line number	Diff line
		@@ -129,4 +129,12 @@ static inline unsigned int dml_round_to_multiple(unsigned int num,
		else
		return (num - remainder);
		}
		static inline double dml_abs(double a)
		{
		if (a > 0)
		return a;
		else
		return (a*(-1));
		}

		#endif