byteToFloat

// need to include math.h!!

float byteToFloat(char a, char b, char c, char d) {
    int bin = (d << 24 | c << 16 | b << 8 | a);
    char sign = (((bin & 0x80000000) >> 31) == 1)?-1:1;
    float exp = pow(2.0f, ((bin & 0x7F800000) >> 23) - 127);
    float mant = 1.0f;
    for (int i = 22; i >= 0; i--) {
        if ((bin >> i) & 1)
            mant += 1.0f / pow(2.0f, 23 - i);
    }
    return sign * exp * mant;
}