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Add NAN test to docs #59327

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Merged
merged 3 commits into from
Mar 23, 2019
Merged

Add NAN test to docs #59327

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2f8d9a2
Add NAN test to docs
Xaeroxe Mar 20, 2019
e2b5a03
Fix formatting and add unit tests for panic cases
Xaeroxe Mar 20, 2019
72f5d91
Fix f64 test
Xaeroxe Mar 20, 2019
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19 changes: 19 additions & 0 deletions src/libstd/f32.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -970,6 +970,7 @@ impl f32 {
/// assert!((-3.0f32).clamp(-2.0f32, 1.0f32) == -2.0f32);
/// assert!((0.0f32).clamp(-2.0f32, 1.0f32) == 0.0f32);
/// assert!((2.0f32).clamp(-2.0f32, 1.0f32) == 1.0f32);
/// assert!((std::f32::NAN).clamp(-2.0f32, 1.0f32).is_nan());
/// ```
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I think we may use assert_eq macro for those assertions.

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For the ones other than the new one, I agree, but because that's existing stuff, I don't think we need to block this PR landing for that.

#[unstable(feature = "clamp", issue = "44095")]
#[inline]
Expand Down Expand Up @@ -1581,4 +1582,22 @@ mod tests {
assert_eq!(f32::from_bits(masked_nan1).to_bits(), masked_nan1);
assert_eq!(f32::from_bits(masked_nan2).to_bits(), masked_nan2);
}

#[test]
#[should_panic]
fn test_clamp_min_greater_than_max() {
1.0f32.clamp(3.0, 1.0);
}

#[test]
#[should_panic]
fn test_clamp_min_is_nan() {
1.0f32.clamp(NAN, 1.0);
}

#[test]
#[should_panic]
fn test_clamp_max_is_nan() {
1.0f32.clamp(3.0, NAN);
}
}
19 changes: 19 additions & 0 deletions src/libstd/f64.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -892,6 +892,7 @@ impl f64 {
/// assert!((-3.0f64).clamp(-2.0f64, 1.0f64) == -2.0f64);
/// assert!((0.0f64).clamp(-2.0f64, 1.0f64) == 0.0f64);
/// assert!((2.0f64).clamp(-2.0f64, 1.0f64) == 1.0f64);
/// assert!((std::f64::NAN).clamp(-2.0f64, 1.0f64).is_nan());
/// ```
#[unstable(feature = "clamp", issue = "44095")]
#[inline]
Expand Down Expand Up @@ -1522,4 +1523,22 @@ mod tests {
assert_eq!(f64::from_bits(masked_nan1).to_bits(), masked_nan1);
assert_eq!(f64::from_bits(masked_nan2).to_bits(), masked_nan2);
}

#[test]
#[should_panic]
fn test_clamp_min_greater_than_max() {
1.0f64.clamp(3.0, 1.0);
}

#[test]
#[should_panic]
fn test_clamp_min_is_nan() {
1.0f64.clamp(NAN, 1.0);
}

#[test]
#[should_panic]
fn test_clamp_max_is_nan() {
1.0f64.clamp(3.0, NAN);
}
}