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#define ALIGN(value, alignment) ((value + alignment - 1) & ~(alignment - 1))
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#define IS_POWER_OF_TWO(val) (((val) & (val - 1)) == 0)
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U_FIXED(float value, uint32_t frac_bits)
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value *= (1 << frac_bits);
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return value < 0 ? 0 : value;
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S_FIXED(float value, uint32_t frac_bits)
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return value * (1 << frac_bits);