95 lines
3.4 KiB
C++
95 lines
3.4 KiB
C++
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <stdint.h>
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#include <vector>
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#include <algorithm>
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#include <numeric>
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extern "C" {
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#include "openair1/PHY/TOOLS/tools_defs.h"
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struct configmodule_interface_s;
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struct configmodule_interface_s *uniqCfg = NULL;
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void exit_function(const char *file, const char *function, const int line, const char *s, const int assert)
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{
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if (assert) {
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abort();
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} else {
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exit(EXIT_SUCCESS);
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}
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}
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}
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#include <cstdio>
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#include "common/utils/LOG/log.h"
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#include "openair1/PHY/TOOLS/phy_test_tools.hpp"
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int main()
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{
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const int shift = 15; // it should always be 15 to keep int16 in same range
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for (int vector_size = 1237; vector_size < 1237 + 8; vector_size++) {
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auto input1 = generate_random_c16(vector_size);
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auto input2 = generate_random_c16(vector_size);
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// Clip the input for -32768 because this will make different result
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// C version promote the int16 to int before doing the conjugate (so negate imaginary part)
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// simd version do it on the int16, so the result overflows to -32768
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// other overflows exist, but they make the same
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// in C we do with int promotion, for real part:
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// (int)x.r*(int)y.r - (int)x.i*(int)y.i
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// that can overflow because each multiplication result is full int range
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// so when we sum, it overflows
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// _mm256_madd_epi16() overflows also, as do regular addition instruction
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// so the result will be the same (the same wrong value)
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for(auto it = input1.begin(); it != input1.end(); it++ ) {
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if (it->r == -32768)
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it->r=-32767;
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if (it->i == -32768)
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it->i=-32767;
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}
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for(auto it = input2.begin(); it != input2.end(); it++ ) {
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if (it->r == -32768)
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it->r=-32767;
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if (it->i == -32768)
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it->i=-32767;
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}
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AlignedVector512<c16_t> output;
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output.resize(vector_size);
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mult_complex_vectors(input1.data(), input2.data(), output.data(), vector_size, shift);
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for (int i = 0; i < vector_size; i++) {
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c16_t res = c16mulShift(input1[i], input2[i], shift);
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if (output[i].r != res.r || output[i].i != res.i) {
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printf("Error at %d: (%d,%d) * (%d,%d) = (%d,%d) (should be (%d,%d))\n",
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i,
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input1[i].r,
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input1[i].i,
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input2[i].r,
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input2[i].i,
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output[i].r,
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output[i].i,
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res.r,
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res.i);
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return 1;
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}
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}
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}
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return 0;
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}
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