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MicroDexed/synth.h

65 lines
1.6 KiB

/*
* Copyright 2012 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __SYNTH_H
#define __SYNTH_H
//#include <Arduino.h>
//#define SUPER_PRECISE
// This IS not be present on MSVC.
// See http://stackoverflow.com/questions/126279/c99-stdint-h-header-and-ms-visual-studio
#include <stdint.h>
#ifdef _MSC_VER
typedef __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef __int16 SInt16;
#endif
#define LG_N 6
#define _N_ (1 << LG_N)
#if defined(__APPLE__)
#include <libkern/OSAtomic.h>
#define SynthMemoryBarrier() OSMemoryBarrier()
#elif defined(__GNUC__)
#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
#define SynthMemoryBarrier() __sync_synchronize()
#endif
#endif
// #undef SynthMemoryBarrier()
#ifndef SynthMemoryBarrier
// need to understand why this must be defined
// #warning Memory barrier is not enabled
#define SynthMemoryBarrier()
#endif
template<typename T>
inline static T min(const T& a, const T& b) {
return a < b ? a : b;
}
template<typename T>
inline static T max(const T& a, const T& b) {
return a > b ? a : b;
}
#define QER(n,b) ( ((float)n)/(1<<b) )
#endif // __SYNTH_H