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50 lines
673 B
Text
50 lines
673 B
Text
module SpaceAge (..) where
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type Planet
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= Mercury
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| Venus
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| Earth
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| Mars
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| Jupiter
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| Saturn
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| Uranus
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| Neptune
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earthYearInSeconds =
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365.25 * 24 * 60 * 60
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ageOn : Planet -> Float -> Float
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ageOn planet seconds =
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seconds / (secondsPerYear planet)
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secondsPerYear : Planet -> Float
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secondsPerYear planet =
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earthYearInSeconds
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* case planet of
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Mercury ->
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0.2408467
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Venus ->
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0.61519726
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Earth ->
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1
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Mars ->
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1.8808158
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Jupiter ->
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11.862615
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Saturn ->
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29.447498
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Uranus ->
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84.016846
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Neptune ->
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164.79132
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