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