| pub fn modff(x: f32) -> (f32, f32) { |
| let rv2: f32; |
| let mut u: u32 = x.to_bits(); |
| let mask: u32; |
| let e = ((u >> 23 & 0xff) as i32) - 0x7f; |
| |
| /* no fractional part */ |
| if e >= 23 { |
| rv2 = x; |
| if e == 0x80 && (u << 9) != 0 { |
| /* nan */ |
| return (x, rv2); |
| } |
| u &= 0x80000000; |
| return (f32::from_bits(u), rv2); |
| } |
| /* no integral part */ |
| if e < 0 { |
| u &= 0x80000000; |
| rv2 = f32::from_bits(u); |
| return (x, rv2); |
| } |
| |
| mask = 0x007fffff >> e; |
| if (u & mask) == 0 { |
| rv2 = x; |
| u &= 0x80000000; |
| return (f32::from_bits(u), rv2); |
| } |
| u &= !mask; |
| rv2 = f32::from_bits(u); |
| return (x - rv2, rv2); |
| } |
