回答編集履歴
2
色々追加。
test
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@@ -23,3 +23,37 @@
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```
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とか
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```swift
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32
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33
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let value = 1.499999999999999
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print(value)
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36
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37
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//=> 1.5
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print(FloorDtoD(number: value))
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40
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//=> 1.4
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```
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とか。
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参考URL
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[FloatingPoint](https://developer.apple.com/reference/swift/floatingpoint) / API Reference
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[IEEE 754](https://ja.wikipedia.org/wiki/IEEE_754#32.E3.83.93.E3.83.83.E3.83.88.E5.8D.98.E7.B2.BE.E5.BA.A6) / Wikipedia
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1
例を修正。
test
CHANGED
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@@ -6,14 +6,20 @@
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6
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```swift
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let value = 1.4999999
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let value = 1.4999999
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print(value)
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//=> 1.4999999
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print(String(format: "%f", value))
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//=> 1.5
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//=> 1.500000
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print(FloorDtoD(number: value))
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//=> 1.4
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```
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