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seq: display -0

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This commit is contained in:
John Shin 2023-08-07 00:09:14 -07:00
parent fe2aa232a5
commit 0aa29682d0
2 changed files with 5 additions and 16 deletions
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12
src/uu/seq/src/extendedbigint.rs
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@ -65,11 +65,7 @@ impl Display for ExtendedBigInt {
Self::BigInt(n) => n.fmt(f),
Self::Infinity => f32::INFINITY.fmt(f),
Self::MinusInfinity => f32::NEG_INFINITY.fmt(f),
Self::MinusZero => {
// FIXME Come up with a way of formatting this with a
// "-" prefix.
0.fmt(f)
}
Self::MinusZero => "-0".fmt(f),
Self::Nan => "nan".fmt(f),
}
}
@ -206,13 +202,9 @@ mod tests {
#[test]
fn test_display() {
assert_eq!(format!("{}", ExtendedBigInt::BigInt(BigInt::zero())), "0");
assert_eq!(format!("{}", ExtendedBigInt::MinusZero), "-0");
assert_eq!(format!("{}", ExtendedBigInt::Infinity), "inf");
assert_eq!(format!("{}", ExtendedBigInt::MinusInfinity), "-inf");
assert_eq!(format!("{}", ExtendedBigInt::Nan), "nan");
// FIXME Come up with a way of displaying negative zero as
// "-0". Currently it displays as just "0".
//
// assert_eq!(format!("{}", ExtendedBigInt::MinusZero), "-0");
//
}
}

9
src/uu/seq/src/seq.rs
View file

@ -223,16 +223,13 @@ fn write_value_int(
value: &ExtendedBigInt,
width: usize,
pad: bool,
is_first_iteration: bool,
) -> std::io::Result<()> {
let value_as_str = if pad {
if *value == ExtendedBigInt::MinusZero && is_first_iteration {
format!("-{value:>0width$}", width = width - 1)
if *value == ExtendedBigInt::MinusZero {
format!("{value:0<width$}")
} else {
format!("{value:>0width$}")
}
} else if *value == ExtendedBigInt::MinusZero && is_first_iteration {
format!("-{value}")
} else {
format!("{value}")
};
@ -347,7 +344,7 @@ fn print_seq_integers(
exit(1);
}
}
None => write_value_int(&mut stdout, &value, padding, pad, is_first_iteration)?,
None => write_value_int(&mut stdout, &value, padding, pad)?,
}
// TODO Implement augmenting addition.
value = value + increment.clone();