text: #ifndef TRANSFORM_H_
  #define TRANSFORM_H_
  
  uint16_t transform_int_proportional(uint16_t input, uint16_t in_x, uint16_t out_y);
  uint16_t transform_int_linear(uint16_t input, uint16_t in_min, uint16_t in_max, uint16_t out_min, uint16_t out_max);
  uint16_t * transform_interpolate(uint16_t *lut, uint16_t nmemb, uint16_t input);
  
  #endif
  