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pub fn frexpf(x: f32) -> (f32, i32) {
let mut y = x.to_bits();
let ee: i32 = ((y >> 23) & 0xff) as i32;
if ee == 0 {
if x != 0.0 {
let x1p64 = f32::from_bits(0x5f800000);
let (x, e) = frexpf(x * x1p64);
return (x, e - 64);
} else {
return (x, 0);
}
} else if ee == 0xff {
return (x, 0);
}
let e = ee - 0x7e;
y &= 0x807fffff;
y |= 0x3f000000;
(f32::from_bits(y), e)
}