вот допиливайте :
| Код |
#include <iostream>
typedef unsigned char data_t[8];
data_t src = { 50, 57, 54, 70, 52, 69, 52, 49 };
unsigned char make_byte (unsigned char hi, unsigned char lo)
{
return ( hi << 4 ) | lo;
}
unsigned char c2h (unsigned char c)
{
if ( '0'<=c && c<='9' ) return c-'0';
if ( 'a'<=c && c<='f' ) return c-'a' + 10;
if ( 'A'<=c && c<='F' ) return c-'A' + 10;
return 0xff; // error
}
float get_float (data_t d)
{
//
union helper
{
float f;
unsigned char b[4]; // check: sizeof (float) == 4
} h;
for (int i=0, j=0; i<4; ++i, j+=2)
{
h.b[i] = make_byte (c2h(d[j]) ,c2h(d[j+1]));
}
return h.f;
}
int main () {
std::cout << get_float (src);
}
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