dsp_maxval_d.c

dm642函数库

/* ======================================================================== */
/*  TEXAS INSTRUMENTS, INC.                                                 */
/*                                                                          */
/*  NAME                                                                    */
/*      DSP_maxval_d.c -- Example file for DSP_maxval                       */
/*                                                                          */
/*  USAGE                                                                   */
/*      This file contains code for demonstrating the C64x DSPLIB           */
/*      DSP_maxval function. All inputs to the function contain random      */
/*      data. The assembly version of DSP_maxval is called and the output   */
/*      is compared with the reference C code using mem_compare() in        */
/*      support.c.                                                          */
/* ------------------------------------------------------------------------ */
/*          Copyright (C) 2003 Texas Instruments, Incorporated.             */
/*                          All Rights Reserved.                            */
/* ======================================================================== */
    
#include <stdio.h> 
#include <stdlib.h>

/* Header file for the memory compare function */
int mem_compare(const void *ptr1, const char *name1, 
                const void *ptr2, const char *name2, int len);

/* Header file for the DSPLIB function */
#include "DSP_maxval.h"    

/* Header file for the C function */
short DSP_maxval_c(const short * x, int nx);


/* ======================================================================== */
/*  Constant dataset.                                                       */
/* ======================================================================== */
#define N    (64)


/* ======================================================================== */
/*  Initialize arrays with random test data.                                */
/* ======================================================================== */
int     test = 0;
const short  x[N] = 
{
    -0x013B, -0x004F,  0x031C,  0x0344,  0x00C0,  0x0028,  0x012B, -0x0035,
     0x000C,  0x00C6, -0x0321,  0x0043,  0x0335, -0x01AF, -0x00AF, -0x03BD,
     0x00E0, -0x0242, -0x00C9,  0x0295,  0x0103, -0x024C, -0x0188, -0x015E,
     0x0128, -0x01CD,  0x0277,  0x020D, -0x01DE, -0x00CF,  0x037B, -0x00E1,
     0x03B1,  0x03C6, -0x037F, -0x0331, -0x013C,  0x02F4, -0x0067,  0x009A,
     0x02D3,  0x0028, -0x0260,  0x0015, -0x0303,  0x00F1, -0x0205,  0x035F,
    -0x0349,  0x027F, -0x0241,  0x0198,  0x02F4, -0x0195, -0x0206, -0x0137,
    -0x02F3, -0x0194, -0x03A9, -0x00D4, -0x0298,  0x0221, -0x0357, -0x0070
};



/* ======================================================================== */
/*  Variables to catch return values from function.                         */
/* ======================================================================== */
short ret_val_asm = 0;
short ret_val_c = 0;

int main()
{   

/* ======================================================================== */
/*  Call hand-coded assembly version (located in DSP64x.lib library         */ 
/*  archive - see Project -> Build Options -> Linker -> Include Libraries)  */
/* ======================================================================== */   
    ret_val_asm = DSP_maxval(x, N);
    
/* ======================================================================== */
/*  Call natural-C version                                                  */
/* ======================================================================== */
    ret_val_c = DSP_maxval_c(x, N);

/* ======================================================================== */
/*  Compare outputs using mem_compare() in support.c.  If different,        */
/*  mem_compare() displays location of failures.                            */
/* ======================================================================== */

      printf("ret_val_asm vs. ret_val_c");
    if ((ret_val_c == ret_val_asm)) 
    {
      printf("\nVerification successful.\n");
    } else 
    {
      printf("\nVerification failure.\n");
    }

}

/* ======================================================================== */
/*  End of file:  dsp_maxval_d.c                                            */
/* ------------------------------------------------------------------------ */
/*          Copyright (C) 2003 Texas Instruments, Incorporated.             */
/*                          All Rights Reserved.                            */
/* ======================================================================== */