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https://github.com/DrasLorus/CORDIC_Rotate_APFX.git
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7707d12e98
- If ENABLE_SOFTWARE is true, the behavior is the same than before. All tests and functions relying on std::complex are obfuscated otherwise. This is required for Xilinx tools.
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
/*
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*
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* Copyright 2022 Camille "DrasLorus" Monière.
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*
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* This file is part of CORDIC_Rotate_APFX.
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*
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* This program is free software: you can redistribute it and/or modify it under the terms of the GNU
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* Lesser General Public License as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
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* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License along with this program.
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* If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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#ifndef _DEFINITIONS_HPP_
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#define _DEFINITIONS_HPP_
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#include <cstddef>
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#include <cstdint>
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#ifdef M_PI
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constexpr double pi = M_PI;
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#else
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constexpr double pi = 3.14159265358979323846;
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#endif
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constexpr double half_pi = pi / 2;
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constexpr double inv_pi = 1 / pi;
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constexpr double two_pi = 2 * pi;
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constexpr double inv_2pi = 0.5 * inv_pi;
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constexpr uint32_t needed_bits(uint32_t value) {
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uint32_t result = 0;
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while (value > 0) {
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result++;
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value >>= 1;
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}
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return result;
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}
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constexpr bool is_pow_2(uint32_t value) {
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return (1U << (needed_bits(value) - 1)) == value;
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}
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#endif // _DEFINITIONS_HPP_
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