36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
/****************************************************************************
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Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
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This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
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be copied by any method or incorporated into another program without
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the express written consent of Aerospace C.Power. This Information or any portion
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thereof remains the property of Aerospace C.Power. The Information contained herein
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is believed to be accurate and Aerospace C.Power assumes no responsibility or
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liability for its use in any way and conveys no license or title under
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any patent or copyright and makes no representation or warranty that this
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Information is free from patent or copyright infringement.
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****************************************************************************/
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#ifndef __FFT_H__
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#define __FFT_H__
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typedef struct complex
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{
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float real;
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float imag;
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}complex;
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#define PI 3.1415926535897932384626433832795028841971
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void conjugate_complex(int n,complex in[],complex out[]);
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void c_plus(complex a,complex b,complex *c);
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void c_mul(complex a,complex b,complex *c);
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void c_sub(complex a,complex b,complex *c);
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void c_div(complex a,complex b,complex *c);
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void fft(int N,complex f[]);
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void ifft(int N,complex f[]);
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void c_abs(complex f[],float out[],int n);
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#endif
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