params.h

来自「ICETEK-C6711-A开发板所的模块fft程序」· C头文件 代码 · 共 45 行

/******************************************************************************
 FILE
 	params.h - This is the C header file for example real FFT 
	implemetations.
 ******************************************************************************/




#define		TRUE		1
#define		FALSE		0
#define		BE		TRUE
#define		LE		FALSE
#define		ENDIAN		LE	/* selects proper endianaess.  If 
					   buliding code in Big Endian,
					   use BE, else use LE */



#define		PI		3.141592653589793 /* defineition of pi */

/* Some functions used in the example implementations use word loads which make
   the code endianess dependent.  Thus, one of the below definitions need to be 
   used depending on the endianess you are using to build your code */

/* BIG Endian */

#if ENDIAN == TRUE

	typedef struct {
		short imag;
		short real;
		} COMPLEX;

#else

/* LITTLE Endian */

	typedef struct {
		short real;
		short imag;
		} COMPLEX;

#endif