OpenCores
URL https://opencores.org/ocsvn/hwlu/hwlu/trunk

Subversion Repositories hwlu

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Rev 8 → Rev 9

/hwlu/trunk/sw/common.c
0,0 → 1,201
/************************************************************/
/* Filename : common.c */
/* Description: Commonly used functions. */
/* Author : Nikolaos Kavvadias, <nkavv@physics.auth.gr> */
/* Date : Tuesday, 09/02/2010. */
/* Revision : -- */
/************************************************************/
 
#include <stdio.h>
#include <stdlib.h>
 
void print_vhdl_header_common(FILE *outfile)
{
fprintf(outfile,"---- ----\n");
fprintf(outfile,"---- Author: Nikolaos Kavvadias ----\n");
fprintf(outfile,"---- nkavv@physics.auth.gr ----\n");
fprintf(outfile,"---- ----\n");
fprintf(outfile,"----==============================================================----\n");
fprintf(outfile,"---- ----\n");
fprintf(outfile,"---- Copyright (C) 2004-2010 Nikolaos Kavvadias ----\n");
fprintf(outfile,"---- nkavv@uop.gr ----\n");
fprintf(outfile,"---- nkavv@physics.auth.gr ----\n");
fprintf(outfile,"---- nikolaos.kavvadias@gmail.com ----\n");
fprintf(outfile,"---- ----\n");
fprintf(outfile,"---- This source file may be used and distributed without ----\n");
fprintf(outfile,"---- restriction provided that this copyright statement is not ----\n");
fprintf(outfile,"---- removed from the file and that any derivative work contains ----\n");
fprintf(outfile,"---- the original copyright notice and the associated disclaimer. ----\n");
fprintf(outfile,"---- ----\n");
fprintf(outfile,"---- This source file is free software; you can redistribute it ----\n");
fprintf(outfile,"---- and/or modify it under the terms of the GNU Lesser General ----\n");
fprintf(outfile,"---- Public License as published by the Free Software Foundation; ----\n");
fprintf(outfile,"---- either version 2.1 of the License, or (at your option) any ----\n");
fprintf(outfile,"---- later version. ----\n");
fprintf(outfile,"---- ----\n");
fprintf(outfile,"---- This source is distributed in the hope that it will be ----\n");
fprintf(outfile,"---- useful, but WITHOUT ANY WARRANTY; without even the implied ----\n");
fprintf(outfile,"---- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ----\n");
fprintf(outfile,"---- PURPOSE. See the GNU Lesser General Public License for more ----\n");
fprintf(outfile,"---- details. ----\n");
fprintf(outfile,"---- ----\n");
fprintf(outfile,"---- You should have received a copy of the GNU Lesser General ----\n");
fprintf(outfile,"---- Public License along with this source; if not, download it ----\n");
fprintf(outfile,"---- from <http://www.opencores.org/lgpl.shtml> ----\n");
fprintf(outfile,"---- ----\n");
fprintf(outfile,"----==============================================================----\n");
fprintf(outfile,"--\n");
fprintf(outfile,"-- CVS Revision History\n");
fprintf(outfile,"--\n");
fprintf(outfile,"\n");
}
unsigned ipow(unsigned x, unsigned y)
{
unsigned i;
unsigned result;
result = 1;
 
for (i=1; i<=y; i++)
result = result*x;
return result;
}
 
unsigned dectobin(unsigned bin_data, int num_bits)
{
int count;
unsigned MASK;
unsigned result;
unsigned result_arr[100];
count = num_bits;
MASK = 1<<(count-1);
result = 0;
 
for (count=num_bits-1; count>-1; count--)
{
result_arr[count] = (( bin_data & MASK ) ? 1 : 0 );
bin_data <<= 1;
}
for (count=num_bits-1; count>-1; count--)
result = ipow(10,count)*result_arr[count] + result;
 
return result;
}
 
/* log2 function for integers: unsigned log2(unsigned operand) */
unsigned log2(unsigned operand)
{
unsigned temp;
unsigned log_val;
 
temp = operand-1;
//temp = operand;
log_val = 0;
 
while (temp > 0)
{
temp = temp/2;
log_val = log_val + 1;
}
 
return log_val;
}
 
void print_binary_value(FILE *outfile, int i, int bw)
{
// Print integer value
switch (bw)
{
case 1:
fprintf(outfile,"%d",dectobin( i, bw ));
break;
case 2:
fprintf(outfile,"%02d",dectobin( i, bw ));
break;
case 3:
fprintf(outfile,"%03d",dectobin( i, bw ));
break;
case 4:
fprintf(outfile,"%04d",dectobin( i, bw ));
break;
case 5:
fprintf(outfile,"%05d",dectobin( i, bw ));
break;
case 6:
fprintf(outfile,"%06d",dectobin( i, bw ));
break;
case 7:
fprintf(outfile,"%07d",dectobin( i, bw ));
break;
case 8:
fprintf(outfile,"%08d",dectobin( i, bw ));
break;
case 9:
fprintf(outfile,"%09d",dectobin( i, bw ));
break;
case 10:
fprintf(outfile,"%10d",dectobin( i, bw ));
break;
case 11:
fprintf(outfile,"%11d",dectobin( i, bw ));
break;
case 12:
fprintf(outfile,"%12d",dectobin( i, bw ));
break;
case 13:
fprintf(outfile,"%13d",dectobin( i, bw ));
break;
case 14:
fprintf(outfile,"%14d",dectobin( i, bw ));
break;
case 15:
fprintf(outfile,"%15d",dectobin( i, bw ));
break;
case 16:
fprintf(outfile,"%16d",dectobin( i, bw ));
break;
default:
break;
}
}
 
// Print binary value -- First bit is "one".
void print_binary_value_fbone(FILE *outfile, int i)
{
// Print integer value
switch ( log2(i) )
{
// i = 1
case 0:
fprintf(outfile,"%d",dectobin( i, i ));
break;
// i = 2:3
case 1:
fprintf(outfile,"%d",dectobin( i, log2(i) ));
break;
// i = 4:7
case 2:
fprintf(outfile,"%02d",dectobin( i, log2(i) ));
break;
// i = 8:15
case 3:
fprintf(outfile,"%03d",dectobin( i, log2(i) ));
break;
// i = 16:31
case 4:
fprintf(outfile,"%04d",dectobin( i, log2(i) ));
break;
// i = 32:63
case 5:
fprintf(outfile,"%05d",dectobin( i, log2(i) ));
break;
default:
break;
}
}

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