aare/src/decode.cpp
siebsi fa6f33fd85
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changes ctb custom weights to accept 1D arrays instead of 2D arrays
2025-04-17 11:12:26 +02:00

103 lines
3.3 KiB
C++

#include "aare/decode.hpp"
#include <cmath>
namespace aare {
uint16_t adc_sar_05_decode64to16(uint64_t input){
//we want bits 29,19,28,18,31,21,27,20,24,23,25,22 and then pad to 16
uint16_t output = 0;
output |= ((input >> 22) & 1) << 11;
output |= ((input >> 25) & 1) << 10;
output |= ((input >> 23) & 1) << 9;
output |= ((input >> 24) & 1) << 8;
output |= ((input >> 20) & 1) << 7;
output |= ((input >> 27) & 1) << 6;
output |= ((input >> 21) & 1) << 5;
output |= ((input >> 31) & 1) << 4;
output |= ((input >> 18) & 1) << 3;
output |= ((input >> 28) & 1) << 2;
output |= ((input >> 19) & 1) << 1;
output |= ((input >> 29) & 1) << 0;
return output;
}
void adc_sar_05_decode64to16(NDView<uint64_t, 2> input, NDView<uint16_t,2> output){
if(input.shape() != output.shape()){
throw std::invalid_argument(LOCATION + " input and output shapes must match");
}
for(int64_t i = 0; i < input.shape(0); i++){
for(int64_t j = 0; j < input.shape(1); j++){
output(i,j) = adc_sar_05_decode64to16(input(i,j));
}
}
}
uint16_t adc_sar_04_decode64to16(uint64_t input){
// bit_map = array([15,17,19,21,23,4,6,8,10,12,14,16] LSB->MSB
uint16_t output = 0;
output |= ((input >> 16) & 1) << 11;
output |= ((input >> 14) & 1) << 10;
output |= ((input >> 12) & 1) << 9;
output |= ((input >> 10) & 1) << 8;
output |= ((input >> 8) & 1) << 7;
output |= ((input >> 6) & 1) << 6;
output |= ((input >> 4) & 1) << 5;
output |= ((input >> 23) & 1) << 4;
output |= ((input >> 21) & 1) << 3;
output |= ((input >> 19) & 1) << 2;
output |= ((input >> 17) & 1) << 1;
output |= ((input >> 15) & 1) << 0;
return output;
}
void adc_sar_04_decode64to16(NDView<uint64_t, 2> input, NDView<uint16_t,2> output){
if(input.shape() != output.shape()){
throw std::invalid_argument(LOCATION + " input and output shapes must match");
}
for(int64_t i = 0; i < input.shape(0); i++){
for(int64_t j = 0; j < input.shape(1); j++){
output(i,j) = adc_sar_04_decode64to16(input(i,j));
}
}
}
double apply_custom_weights(uint16_t input, const NDView<double, 1> weights) {
if(weights.size() > 16){
throw std::invalid_argument("weights size must be less than or equal to 16");
}
double result = 0.0;
for (ssize_t i = 0; i < weights.size(); ++i) {
result += ((input >> i) & 1) * std::pow(weights[i], i);
}
return result;
}
void apply_custom_weights(NDView<uint16_t, 1> input, NDView<double, 1> output, const NDView<double,1> weights) {
if(input.shape() != output.shape()){
throw std::invalid_argument(LOCATION + " input and output shapes must match");
}
//Calculate weights to avoid repeatedly calling std::pow
std::vector<double> weights_powers(weights.size());
for (ssize_t i = 0; i < weights.size(); ++i) {
weights_powers[i] = std::pow(weights[i], i);
}
// Apply custom weights to each element in the input array
for (ssize_t i = 0; i < input.shape(0); i++) {
double result = 0.0;
for (ssize_t bit_index = 0; bit_index < weights_powers.size(); ++bit_index) {
result += ((input(i) >> bit_index) & 1) * weights_powers[bit_index];
}
output(i) = result;
}
}
} // namespace aare