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) | |
} |