88 lines
2.7 KiB
Rust
88 lines
2.7 KiB
Rust
use minimal_lexical::number::Number;
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#[test]
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fn is_fast_path_test() {
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let mut number = Number {
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exponent: -4,
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mantissa: 12345,
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many_digits: false,
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};
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assert_eq!(number.is_fast_path::<f32>(), true);
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assert_eq!(number.is_fast_path::<f64>(), true);
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number.exponent = -15;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), true);
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number.exponent = -25;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), false);
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number.exponent = 25;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), true);
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number.exponent = 36;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), true);
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number.exponent = 38;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), false);
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number.mantissa = 1 << 25;
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number.exponent = 0;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), true);
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number.mantissa = 1 << 54;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), false);
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number.mantissa = 1 << 52;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), true);
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number.many_digits = true;
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assert_eq!(number.is_fast_path::<f32>(), false);
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assert_eq!(number.is_fast_path::<f64>(), false);
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}
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#[test]
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fn try_fast_path_test() {
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let mut number = Number {
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exponent: -4,
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mantissa: 12345,
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many_digits: false,
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};
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assert_eq!(number.try_fast_path::<f32>(), Some(1.2345));
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assert_eq!(number.try_fast_path::<f64>(), Some(1.2345));
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number.exponent = -10;
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assert_eq!(number.try_fast_path::<f32>(), Some(1.2345e-6));
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assert_eq!(number.try_fast_path::<f64>(), Some(1.2345e-6));
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number.exponent = -20;
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assert_eq!(number.try_fast_path::<f32>(), None);
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assert_eq!(number.try_fast_path::<f64>(), Some(1.2345e-16));
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number.exponent = -25;
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assert_eq!(number.try_fast_path::<f32>(), None);
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assert_eq!(number.try_fast_path::<f64>(), None);
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number.exponent = 12;
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assert_eq!(number.try_fast_path::<f32>(), Some(1.2345e16));
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assert_eq!(number.try_fast_path::<f64>(), Some(1.2345e16));
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number.exponent = 25;
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assert_eq!(number.try_fast_path::<f32>(), None);
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assert_eq!(number.try_fast_path::<f64>(), Some(1.2345e29));
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number.exponent = 32;
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assert_eq!(number.try_fast_path::<f32>(), None);
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assert_eq!(number.try_fast_path::<f64>(), Some(1.2345e36));
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number.exponent = 36;
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assert_eq!(number.try_fast_path::<f32>(), None);
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assert_eq!(number.try_fast_path::<f64>(), None);
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}
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