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OpenAudio_ArduinoLibrary/mathDSP_F32.h

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/*
mathDSP.h - Definitions and functions to support OpenAudio_ArduinoLibrary_F32
Created by Bob Larkin 15 April 2020.
*/
#ifndef mathDSP_F32_h
#define mathDSP_F32_h
#ifndef M_PI_2
#define M_PI_2 1.57079632679489661923
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_TWOPI
#define M_TWOPI 6.28318530717958647692
#endif
#ifndef MF_PI_2
#define MF_PI_2 1.5707963f
#endif
#ifndef MF_PI
#define MF_PI 3.14159265f
#endif
#ifndef MF_TWOPI
#define MF_TWOPI 6.2831853f
#endif
class mathDSP_F32
{
public:
float acos_f32(float x);
float approxAcos(float x);
float fastAtan2(float y, float x);
float i0f(float x);
private:
// Support for FastAtan2(x,y)
float _Atan(float z) {
const float n1 = 0.97239411f;
const float n2 = -0.19194795f;
return (n1 + n2 * z * z) * z;
}
};
#endif