blog/cpp/fonts/ft_math/ft_math.h

#ifndef __FONT_MATH_H__
#define __FONT_MATH_H__
#include <cstdint>
uint16_t highestBitValue(uint16_t x) {  
    if (x == 0) return 0; 
    uint16_t n = 0;  
    while (x > 1) {  
        x >>= 1;  
        n++;
    }  
    return 1U << n;  
}

#endif