moniere/hls_max_template
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modif max_pow2 pour avoir II=2 (avant II=3)

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lvolpin 2022-10-07 16:23:10 +02:00
parent 746557327b
commit f292fd3127
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1 changed files with 22 additions and 10 deletions
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32
sources/modules/max.hpp
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@ -39,20 +39,17 @@ uint16_t do_max_loop_127(const uint16_t in_array[64]);
#endif
template <typename T>
constexpr T max_scalar(T a, T b) {
return (a < b ? b : a);
}
template <unsigned N>
struct max_pow2 {
template <typename T>
static T process(const T values[N]) {
static_assert(N > 2, "N cannot be less than 3!");
T half_values[N / 2];
#pragma HLS array_partition variable=half_values complete
for (uint8_t i = 0; i < N / 2; i++) {
#pragma HLS unroll
const uint8_t j = i << 1;
const uint8_t jp1 = j + 1;
half_values[i] = (values[j] < values[jp1] ? values[jp1] : values[j]);
}
return max_pow2<N / 2>::process(half_values);
return max_scalar(max_pow2<N / 2>::process(values), max_pow2<N / 2>::process(values + N / 2));
}
};
@ -60,10 +57,25 @@ template <>
struct max_pow2<2> {
template <typename T>
static T process(const T values[2]) {
return (values[0] < values[1] ? values[1] : values[0]);
return max_scalar(values[0], values[1]);
}
};
template <unsigned N>
struct max_naif {
template <typename T>
static T process(const T values[N]) {
T res = values[0];
for(uint8_t i = 1; i < N; i++){
#pragma HLS pipeline
res = max_scalar(res, values[i]);
}
return res;
}
};
/* TRUE MAX TEMPLATE BELOW */
/**