nu_math.h

nucleus 文件系统,内核和彩色图形系统,在小系统上非常好用

/*************************************************************************/
/*                                                                       */
/*        Copyright (c) 1999 Accelerated Technology, Inc.                */
/*                                                                       */
/* PROPRIETARY RIGHTS of Accelerated Technology are involved in the      */
/* subject matter of this material.  All manufacturing, reproduction,    */
/* use, and sales rights pertaining to this subject matter are governed  */
/* by the license agreement.  The recipient of this software implicitly  */
/* accepts the terms of the license.                                     */
/*                                                                       */
/*************************************************************************/

/*************************************************************************/
/*                                                                       */
/* FILE NAME                                            VERSION          */
/*                                                                       */
/*      Nu_math.h                                        1.9             */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      All                                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*		Fixed-point math include file                                    */
/*                                                                       */
/* AUTHOR                                                                */
/*                                                                       */
/*      Giac Dinh , Accelerated Technology, Inc.                         */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         NAME            DATE                    REMARKS               */
/*                                                                       */
/*                                                                       */
/*************************************************************************/

//#define CPU_FLOAT
#ifdef CPU_FLOAT
#include <math.h>


#else
#define FIXPOINT
long Fix_mul(long first, long second);
long Fix_div(long a, long b);
long Fix_sqrt(long root);
long iCos(long Angle);
long iSin(long Angle);
long Nu_asin(long radian);

typedef struct _dblFix{	/* 64-bit fixed point */
	long fUpper;
	unsigned long fLower;
} dblFix;
int dFix_add(dblFix *first, dblFix *second, dblFix *result);
int dFix_sub(dblFix *first, dblFix *second, dblFix *result);
int dFix_mul(dblFix *first, dblFix *second, dblFix *result);
int dFix_div(dblFix *first, dblFix *second, dblFix *result);

#endif