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#include <errno.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#include "../Include/serial.h"
#ifdef NAN
/* NAN is supported */
#endif
#ifdef INFINITY
/* INFINITY is supported */
#endif
long int hex2dec(char hexadecimal[])
{
long int decimalNumber=0;
char hexDigits[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8',
'9', 'A', 'B', 'C', 'D', 'E', 'F'};
int i, j, power=0;
/* Converting hexadecimal number to decimal number */
for(i=strlen(hexadecimal)-1; i >= 0; i--) {
/*search currect character in hexDigits array */
if(isalpha(hexadecimal[i]))
hexadecimal[i]=toupper(hexadecimal[i]);
for(j=0; j<16; j++){
if(hexadecimal[i] == hexDigits[j]){
decimalNumber += j*pow(16, power);
}
// }
power++;
}
}
return decimalNumber;
}
void dec2hex(long int decimalnum,char hexadecimalnum[])
{
long quotient, remainder;
int j = 1;
quotient = decimalnum;
while (quotient != 0)
{
remainder = quotient % 16;
if (remainder < 10)
hexadecimalnum[j--] = 48 + remainder;
else
hexadecimalnum[j--] = 55 + remainder;
quotient = quotient / 16;
}
hexadecimalnum[2]='\0';
}
double ieeesingle2num(char hexa[])
{
long int x=hex2dec(hexa);
long int k =(long int)pow(2,31); //pow2(31);
int s = (x >= k);
if (s)
x = x - k;
//t = pow2(x,-23);
double t = x*pow(2,-23);
long int e = floor(t);
double f = t - e;
double y;
if (e == 255)
if(f == 0)
y = INFINITY;
else
y = NAN;
else if(e > 0)
y = (1+f)*pow(2,e-127);
//y = (1+f).*2.^(e-127);
else
y = f*pow(2,-126);
//y = f.*2.^-126;
if (s)
y = -y;
return y;
}
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