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//==========================================================================
// Name: codec2_math_arm.c
//
// Purpose: A wrapper around architecture specific math libraries
// used on ARM embedded devices to improve Codec2 performance.
// Created: May 15, 2022
// Authors: Mooneer Salem
//
// License:
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License version 2.1,
// as published by the Free Software Foundation. This program is
// distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
// License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program; if not, see <http://www.gnu.org/licenses/>.
//
//==========================================================================
#if defined(__EMBEDDED__) && defined(__ARM_ARCH)
#include "arm_math.h"
#include "codec2_math.h"
//==========================================================================
/// Calculates the dot product of two real-valued float vectors.
///
/// @param leftHandSideRealVector A pointer to the first vector to use for the
/// dot product.
/// @param rightHandSideRealVector A pointer to the second vector to use for the
/// dot product.
/// @param vectorLength The length of the vector. Both vectors should be at
/// least this long.
/// @param resultReal A pointer to the variable in which to store the scalar
/// result.
//==========================================================================
void codec2_dot_product_f32(float* leftHandSideRealVector,
float* rightHandSideRealVector, size_t vectorLength,
float* resultReal) {
arm_dot_prod_f32(leftHandSideRealVector, rightHandSideRealVector,
vectorLength, resultReal);
}
//==========================================================================
/// Calculates the dot product of two complex-valued float vectors.
///
/// @param leftHandSideComplexVector A pointer to the first vector to use for
/// the dot product.
/// @param rightHandSideComplexVector A pointer to the second vector to use for
/// the dot product.
/// @param vectorLength The length of the vector. Both vectors should be at
/// least this long.
/// @param resultReal A pointer to the variable in which to store the real
/// component of the result.
/// @param resultImag A pointer to the variable in which to store the imaginary
/// component of the result.
///
/// @note Each array of floats is organized with even elements being real and
/// odd elements imaginary.
//==========================================================================
void codec2_complex_dot_product_f32(COMP* leftHandSideComplexVector,
COMP* rightHandSideComplexVector,
size_t vectorLength, float* resultReal,
float* resultImag) {
arm_cmplx_dot_prod_f32((float*)leftHandSideComplexVector,
(float*)rightHandSideComplexVector, vectorLength,
resultReal, resultImag);
}
#endif // defined(__EMBEDDED__) && defined(__ARM_ARCH)
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