When I try to complete float2int with the following function

```
int float2int(unsigned uf) {
int s_ = uf>>31;
int exp_ = ((uf&0x7f800000)>>23)-127;
int frac_ = (uf&0x007fffff)|0x00800000;
if(!(uf&0x7fffffff)) return 0;
if(exp_ > 31) return 0x80000000;
if(exp_ < 0) return 0;
if(exp_ > 23) frac_ <<= (exp_-23);
else frac_ >>= (23-exp_);
if(!((frac_>>31)^s_)) return frac_;
else if(frac_>>31) return 0x80000000;
else return ~frac_+1;
}
```

There is a case where out of range (including Nan or infinity) should return 0x80000000u. exp_>31 is the case,so why exp_ can not greater than 31?

asked on Stack Overflow Jul 17, 2020 by user13945431

User contributions licensed under CC BY-SA 3.0