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76 lines
2.0 KiB
76 lines
2.0 KiB
/*
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Copyright 2012 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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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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#ifndef __SYNTH_H
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#define __SYNTH_H
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//#include <Arduino.h>
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//#define SUPER_PRECISE
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#include <Audio.h>
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// This IS not be present on MSVC.
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// See http://stackoverflow.com/questions/126279/c99-stdint-h-header-and-ms-visual-studio
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#include <stdint.h>
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#ifdef _MSC_VER
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typedef __int32 int32_t;
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typedef unsigned __int32 uint32_t;
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typedef __int16 SInt16;
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#endif
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#define LG_N 6
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#define _N_ (1 << LG_N)
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#if defined(__APPLE__)
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#include <libkern/OSAtomic.h>
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#define SynthMemoryBarrier() OSMemoryBarrier()
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#elif defined(__GNUC__)
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#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
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#define SynthMemoryBarrier() __sync_synchronize()
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#endif
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#endif
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// #undef SynthMemoryBarrier()
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#ifndef SynthMemoryBarrier
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// need to understand why this must be defined
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// #warning Memory barrier is not enabled
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#define SynthMemoryBarrier()
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#endif
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template<typename T>
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inline static T min(const T& a, const T& b) {
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return a < b ? a : b;
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}
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template<typename T>
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inline static T max(const T& a, const T& b) {
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return a > b ? a : b;
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}
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#define QER(n,b) ( ((float)n)/(1<<b) )
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#define FRAC_NUM float
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#define SIN_FUNC sinf
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// #define SIN_FUNC arm_sin_f32 // very fast but not as accurate
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#define COS_FUNC cosf
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// #define COS_FUNC arm_cos_f32 // very fast but not as accurate
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#define LOG_FUNC logf
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#define EXP_FUNC expf
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#define SQRT_FUNC sqrtf
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// #define ARM_SQRT_FUNC arm_sqrt_f32 // fast but not as accurate
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#endif // __SYNTH_H
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