568   float gain = 1.0f;  in encodeGain()  local
570     gain = y_hdr / y_sdr;  in encodeGain()
573   if (gain < metadata->minContentBoost) gain = metadata->minContentBoost;  in encodeGain()
574   if (gain > metadata->maxContentBoost) gain = metadata->maxContentBoost;  in encodeGain()
576   return static_cast<uint8_t>((log2(gain) - log2MinContentBoost)  in encodeGain()
581 Color applyGain(Color e, float gain, ultrahdr_metadata_ptr metadata) {  in applyGain()  argument
582   float logBoost = log2(metadata->minContentBoost) * (1.0f - gain)  in applyGain()
583                  + log2(metadata->maxContentBoost) * gain;  in applyGain()
588 Color applyGain(Color e, float gain, ultrahdr_metadata_ptr metadata, float displayBoost) {  in applyGain()  argument
589   float logBoost = log2(metadata->minContentBoost) * (1.0f - gain)  in applyGain()
590                  + log2(metadata->maxContentBoost) * gain;  in applyGain()
595 Color applyGainLUT(Color e, float gain, GainLUT& gainLUT) {  in applyGainLUT()  argument
596   float gainFactor = gainLUT.getGainFactor(gain);  in applyGainLUT()