pub fn ceil(x: f32) -> f32 {
let mut ui = x.to_bits();
let e = (((ui >> 23) & 0xff).wrapping_sub(0x7f)) as i32;
if e >= 23 {
return x;
}
if e >= 0 {
let m = 0x007fffff >> e;
if (ui & m) == 0 {
return x;
}
if ui >> 31 == 0 {
ui += m;
}
ui &= !m;
} else {
if ui >> 31 != 0 {
return -0.0;
} else if ui << 1 != 0 {
return 1.0;
}
}
f32::from_bits(ui)
}