dsp_maxidx_d.c

来自「dm642函数库」· C语言 代码 · 共 103 行

/* ======================================================================== */
/*  TEXAS INSTRUMENTS, INC.                                                 */
/*                                                                          */
/*  NAME                                                                    */
/*      DSP_maxidx_d.c -- Example file for DSP_maxidx                       */
/*                                                                          */
/*  USAGE                                                                   */
/*      This file contains code for demonstrating the C64x DSPLIB           */
/*      DSP_maxidx function. All inputs to the function contain random      */
/*      data. The assembly version of DSP_maxidx 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_maxidx.h"    

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

/* ======================================================================== */
/*  DSPLIB function-specific alignments. Refer to the                       */
/*  TMS320C64x DSP Library Programmer's Reference for details.              */
/* ======================================================================== */
#pragma DATA_ALIGN(x, 8);

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


/* ======================================================================== */
/*  Initialize arrays with random test data.                                */
/* ======================================================================== */
int     test = 0;
const short  x[NX] = 
{
    -0x31F2,  0x0C4B, -0x6C90,  0x66A8,  0x3AB8,  0x45C6,  0x7216,  0x52F2,
    -0x6035, -0x7DD3,  0x7B3C, -0x3979, -0x7B93, -0x6BC1, -0x5B07,  0x7CF9,
     0x6605,  0x6027, -0x3A7E,  0x548C, -0x27B3, -0x7502, -0x76BE, -0x4C19,
    -0x0509,  0x0EE6,  0x60BF,  0x71D4, -0x37BF, -0x7567,  0x1D31,  0x7B5B,
    -0x4DBC,  0x21DA, -0x0F54,  0x7AC2, -0x4C1A, -0x4D63,  0x19CF, -0x0BF2,
     0x269B,  0x04A2,  0x65DD, -0x4914, -0x7BD8,  0x1DEC, -0x74F9,  0x552E,
    -0x46FE,  0x4EEF,  0x2220, -0x0D52, -0x1AEE, -0x5705, -0x7338,  0x0630,
    -0x72DB, -0x1038,  0x7510, -0x2363,  0x0762,  0x2384, -0x43E5,  0x337F
};



/* ======================================================================== */
/*  Variables to catch return values from function.                         */
/* ======================================================================== */
int ret_val_asm = 0;
int 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_maxidx(x, NX);
    
/* ======================================================================== */
/*  Call natural-C version                                                  */
/* ======================================================================== */
    ret_val_c = DSP_maxidx_c(x, NX);

/* ======================================================================== */
/*  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_maxidx_d.c                                            */
/* ------------------------------------------------------------------------ */
/*          Copyright (C) 2003 Texas Instruments, Incorporated.             */
/*                          All Rights Reserved.                            */
/* ======================================================================== */