Documentation

Batteries.Data.UInt

UInt8 #

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theorem UInt8.ext {x y : UInt8} :
x.toNat = y.toNat → x = y
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theorem UInt8.toNat_lt (x : UInt8) :
x.toNat < 2 ^ 8
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@[simp]
theorem UInt8.toUInt16_toNat (x : UInt8) :
x.toUInt16.toNat = x.toNat
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@[simp]
theorem UInt8.toUInt32_toNat (x : UInt8) :
x.toUInt32.toNat = x.toNat
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@[simp]
theorem UInt8.toUInt64_toNat (x : UInt8) :
x.toUInt64.toNat = x.toNat
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instance instLawfulOrdUInt8 :
Batteries.LawfulOrd UInt8

UInt16 #

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theorem UInt16.ext {x y : UInt16} :
x.toNat = y.toNat → x = y
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theorem UInt16.toNat_lt (x : UInt16) :
x.toNat < 2 ^ 16
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@[simp]
theorem UInt16.toUInt8_toNat (x : UInt16) :
x.toUInt8.toNat = x.toNat % 2 ^ 8
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@[simp]
theorem UInt16.toUInt32_toNat (x : UInt16) :
x.toUInt32.toNat = x.toNat
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@[simp]
theorem UInt16.toUInt64_toNat (x : UInt16) :
x.toUInt64.toNat = x.toNat
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instance instLawfulOrdUInt16 :
Batteries.LawfulOrd UInt16

UInt32 #

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theorem UInt32.ext {x y : UInt32} :
x.toNat = y.toNat → x = y
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theorem UInt32.toNat_lt (x : UInt32) :
x.toNat < 2 ^ 32
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@[simp]
theorem UInt32.toUInt8_toNat (x : UInt32) :
x.toUInt8.toNat = x.toNat % 2 ^ 8
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@[simp]
theorem UInt32.toUInt16_toNat (x : UInt32) :
x.toUInt16.toNat = x.toNat % 2 ^ 16
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@[simp]
theorem UInt32.toUInt64_toNat (x : UInt32) :
x.toUInt64.toNat = x.toNat
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instance instLawfulOrdUInt32 :
Batteries.LawfulOrd UInt32

UInt64 #

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theorem UInt64.ext {x y : UInt64} :
x.toNat = y.toNat → x = y
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theorem UInt64.toNat_lt (x : UInt64) :
x.toNat < 2 ^ 64
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@[simp]
theorem UInt64.toUInt8_toNat (x : UInt64) :
x.toUInt8.toNat = x.toNat % 2 ^ 8
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@[simp]
theorem UInt64.toUInt16_toNat (x : UInt64) :
x.toUInt16.toNat = x.toNat % 2 ^ 16
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@[simp]
theorem UInt64.toUInt32_toNat (x : UInt64) :
x.toUInt32.toNat = x.toNat % 2 ^ 32
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instance instLawfulOrdUInt64 :
Batteries.LawfulOrd UInt64

USize #

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theorem USize.ext {x y : USize} :
x.toNat = y.toNat → x = y
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theorem USize.size_eq :
size = 2 ^ System.Platform.numBits
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theorem USize.le_size :
2 ^ 32 ≤ size
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theorem USize.size_le :
size ≤ 2 ^ 64
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theorem USize.toNat_lt (x : USize) :
x.toNat < 2 ^ System.Platform.numBits
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@[simp]
theorem USize.toUInt64_toNat (x : USize) :
x.toUInt64.toNat = x.toNat
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@[simp]
theorem UInt32.toUSize_toNat (x : UInt32) :
x.toUSize.toNat = x.toNat
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instance instLawfulOrdUSize :
Batteries.LawfulOrd USize