diff options
Diffstat (limited to 'lib/system/arithmetics.nim')
| -rw-r--r-- | lib/system/arithmetics.nim | 400 |
1 files changed, 157 insertions, 243 deletions
diff --git a/lib/system/arithmetics.nim b/lib/system/arithmetics.nim index f6c1b69ff..e229a0f4b 100644 --- a/lib/system/arithmetics.nim +++ b/lib/system/arithmetics.nim @@ -1,157 +1,50 @@ -proc succ*[T: Ordinal](x: T, y = 1): T {.magic: "Succ", noSideEffect.} - ## Returns the ``y``-th successor (default: 1) of the value ``x``. - ## ``T`` has to be an `ordinal type <#Ordinal>`_. +proc succ*[T, V: Ordinal](x: T, y: V = 1): T {.magic: "Succ", noSideEffect.} = + ## Returns the `y`-th successor (default: 1) of the value `x`. ## - ## If such a value does not exist, ``OverflowDefect`` is raised + ## If such a value does not exist, `OverflowDefect` is raised ## or a compile time error occurs. - ## - ## .. code-block:: Nim - ## let x = 5 - ## echo succ(5) # => 6 - ## echo succ(5, 3) # => 8 - -proc pred*[T: Ordinal](x: T, y = 1): T {.magic: "Pred", noSideEffect.} - ## Returns the ``y``-th predecessor (default: 1) of the value ``x``. - ## ``T`` has to be an `ordinal type <#Ordinal>`_. - ## - ## If such a value does not exist, ``OverflowDefect`` is raised - ## or a compile time error occurs. - ## - ## .. code-block:: Nim - ## let x = 5 - ## echo pred(5) # => 4 - ## echo pred(5, 3) # => 2 + runnableExamples: + assert succ(5) == 6 + assert succ(5, 3) == 8 -proc inc*[T: Ordinal](x: var T, y = 1) {.magic: "Inc", noSideEffect.} - ## Increments the ordinal ``x`` by ``y``. +proc pred*[T, V: Ordinal](x: T, y: V = 1): T {.magic: "Pred", noSideEffect.} = + ## Returns the `y`-th predecessor (default: 1) of the value `x`. ## - ## If such a value does not exist, ``OverflowDefect`` is raised or a compile - ## time error occurs. This is a short notation for: ``x = succ(x, y)``. - ## - ## .. code-block:: Nim - ## var i = 2 - ## inc(i) # i <- 3 - ## inc(i, 3) # i <- 6 + ## If such a value does not exist, `OverflowDefect` is raised + ## or a compile time error occurs. + runnableExamples: + assert pred(5) == 4 + assert pred(5, 3) == 2 -proc dec*[T: Ordinal](x: var T, y = 1) {.magic: "Dec", noSideEffect.} - ## Decrements the ordinal ``x`` by ``y``. +proc inc*[T, V: Ordinal](x: var T, y: V = 1) {.magic: "Inc", noSideEffect.} = + ## Increments the ordinal `x` by `y`. ## - ## If such a value does not exist, ``OverflowDefect`` is raised or a compile - ## time error occurs. This is a short notation for: ``x = pred(x, y)``. + ## If such a value does not exist, `OverflowDefect` is raised or a compile + ## time error occurs. This is a short notation for: `x = succ(x, y)`. + runnableExamples: + var i = 2 + inc(i) + assert i == 3 + inc(i, 3) + assert i == 6 + +proc dec*[T, V: Ordinal](x: var T, y: V = 1) {.magic: "Dec", noSideEffect.} = + ## Decrements the ordinal `x` by `y`. ## - ## .. code-block:: Nim - ## var i = 2 - ## dec(i) # i <- 1 - ## dec(i, 3) # i <- -2 + ## If such a value does not exist, `OverflowDefect` is raised or a compile + ## time error occurs. This is a short notation for: `x = pred(x, y)`. + runnableExamples: + var i = 2 + dec(i) + assert i == 1 + dec(i, 3) + assert i == -2 # -------------------------------------------------------------------------- # built-in operators -when defined(nimNoZeroExtendMagic): - proc ze*(x: int8): int {.deprecated.} = - ## zero extends a smaller integer type to ``int``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int](uint(cast[uint8](x))) - - proc ze*(x: int16): int {.deprecated.} = - ## zero extends a smaller integer type to ``int``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int](uint(cast[uint16](x))) - - proc ze64*(x: int8): int64 {.deprecated.} = - ## zero extends a smaller integer type to ``int64``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int64](uint64(cast[uint8](x))) - - proc ze64*(x: int16): int64 {.deprecated.} = - ## zero extends a smaller integer type to ``int64``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int64](uint64(cast[uint16](x))) - - proc ze64*(x: int32): int64 {.deprecated.} = - ## zero extends a smaller integer type to ``int64``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int64](uint64(cast[uint32](x))) - - proc ze64*(x: int): int64 {.deprecated.} = - ## zero extends a smaller integer type to ``int64``. This treats `x` as - ## unsigned. Does nothing if the size of an ``int`` is the same as ``int64``. - ## (This is the case on 64 bit processors.) - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int64](uint64(cast[uint](x))) - - proc toU8*(x: int): int8 {.deprecated.} = - ## treats `x` as unsigned and converts it to a byte by taking the last 8 bits - ## from `x`. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int8](x) - - proc toU16*(x: int): int16 {.deprecated.} = - ## treats `x` as unsigned and converts it to an ``int16`` by taking the last - ## 16 bits from `x`. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int16](x) - - proc toU32*(x: int64): int32 {.deprecated.} = - ## treats `x` as unsigned and converts it to an ``int32`` by taking the - ## last 32 bits from `x`. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - cast[int32](x) - -elif not defined(js): - proc ze*(x: int8): int {.magic: "Ze8ToI", noSideEffect, deprecated.} - ## zero extends a smaller integer type to ``int``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - - proc ze*(x: int16): int {.magic: "Ze16ToI", noSideEffect, deprecated.} - ## zero extends a smaller integer type to ``int``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - - proc ze64*(x: int8): int64 {.magic: "Ze8ToI64", noSideEffect, deprecated.} - ## zero extends a smaller integer type to ``int64``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - - proc ze64*(x: int16): int64 {.magic: "Ze16ToI64", noSideEffect, deprecated.} - ## zero extends a smaller integer type to ``int64``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - - proc ze64*(x: int32): int64 {.magic: "Ze32ToI64", noSideEffect, deprecated.} - ## zero extends a smaller integer type to ``int64``. This treats `x` as - ## unsigned. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - - proc ze64*(x: int): int64 {.magic: "ZeIToI64", noSideEffect, deprecated.} - ## zero extends a smaller integer type to ``int64``. This treats `x` as - ## unsigned. Does nothing if the size of an ``int`` is the same as ``int64``. - ## (This is the case on 64 bit processors.) - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - - proc toU8*(x: int): int8 {.magic: "ToU8", noSideEffect, deprecated.} - ## treats `x` as unsigned and converts it to a byte by taking the last 8 bits - ## from `x`. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - - proc toU16*(x: int): int16 {.magic: "ToU16", noSideEffect, deprecated.} - ## treats `x` as unsigned and converts it to an ``int16`` by taking the last - ## 16 bits from `x`. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - - proc toU32*(x: int64): int32 {.magic: "ToU32", noSideEffect, deprecated.} - ## treats `x` as unsigned and converts it to an ``int32`` by taking the - ## last 32 bits from `x`. - ## **Deprecated since version 0.19.9**: Use unsigned integers instead. - # integer calculations: proc `+`*(x: int): int {.magic: "UnaryPlusI", noSideEffect.} ## Unary `+` operator for an integer. Has no effect. @@ -167,20 +60,13 @@ proc `-`*(x: int16): int16 {.magic: "UnaryMinusI", noSideEffect.} proc `-`*(x: int32): int32 {.magic: "UnaryMinusI", noSideEffect.} proc `-`*(x: int64): int64 {.magic: "UnaryMinusI64", noSideEffect.} -proc `not`*(x: int): int {.magic: "BitnotI", noSideEffect.} +proc `not`*(x: int): int {.magic: "BitnotI", noSideEffect.} = ## Computes the `bitwise complement` of the integer `x`. - ## - ## .. code-block:: Nim - ## var - ## a = 0'u8 - ## b = 0'i8 - ## c = 1000'u16 - ## d = 1000'i16 - ## - ## echo not a # => 255 - ## echo not b # => -1 - ## echo not c # => 64535 - ## echo not d # => -1001 + runnableExamples: + assert not 0'u8 == 255 + assert not 0'i8 == -1 + assert not 1000'u16 == 64535 + assert not 1000'i16 == -1001 proc `not`*(x: int8): int8 {.magic: "BitnotI", noSideEffect.} proc `not`*(x: int16): int16 {.magic: "BitnotI", noSideEffect.} proc `not`*(x: int32): int32 {.magic: "BitnotI", noSideEffect.} @@ -207,40 +93,38 @@ proc `*`*(x, y: int16): int16 {.magic: "MulI", noSideEffect.} proc `*`*(x, y: int32): int32 {.magic: "MulI", noSideEffect.} proc `*`*(x, y: int64): int64 {.magic: "MulI", noSideEffect.} -proc `div`*(x, y: int): int {.magic: "DivI", noSideEffect.} +proc `div`*(x, y: int): int {.magic: "DivI", noSideEffect.} = ## Computes the integer division. ## - ## This is roughly the same as ``trunc(x/y)``. - ## - ## .. code-block:: Nim - ## ( 1 div 2) == 0 - ## ( 2 div 2) == 1 - ## ( 3 div 2) == 1 - ## ( 7 div 3) == 2 - ## (-7 div 3) == -2 - ## ( 7 div -3) == -2 - ## (-7 div -3) == 2 + ## This is roughly the same as `math.trunc(x/y).int`. + runnableExamples: + assert (1 div 2) == 0 + assert (2 div 2) == 1 + assert (3 div 2) == 1 + assert (7 div 3) == 2 + assert (-7 div 3) == -2 + assert (7 div -3) == -2 + assert (-7 div -3) == 2 proc `div`*(x, y: int8): int8 {.magic: "DivI", noSideEffect.} proc `div`*(x, y: int16): int16 {.magic: "DivI", noSideEffect.} proc `div`*(x, y: int32): int32 {.magic: "DivI", noSideEffect.} proc `div`*(x, y: int64): int64 {.magic: "DivI", noSideEffect.} -proc `mod`*(x, y: int): int {.magic: "ModI", noSideEffect.} +proc `mod`*(x, y: int): int {.magic: "ModI", noSideEffect.} = ## Computes the integer modulo operation (remainder). ## - ## This is the same as ``x - (x div y) * y``. - ## - ## .. code-block:: Nim - ## ( 7 mod 5) == 2 - ## (-7 mod 5) == -2 - ## ( 7 mod -5) == 2 - ## (-7 mod -5) == -2 + ## This is the same as `x - (x div y) * y`. + runnableExamples: + assert (7 mod 5) == 2 + assert (-7 mod 5) == -2 + assert (7 mod -5) == 2 + assert (-7 mod -5) == -2 proc `mod`*(x, y: int8): int8 {.magic: "ModI", noSideEffect.} proc `mod`*(x, y: int16): int16 {.magic: "ModI", noSideEffect.} proc `mod`*(x, y: int32): int32 {.magic: "ModI", noSideEffect.} proc `mod`*(x, y: int64): int64 {.magic: "ModI", noSideEffect.} -when defined(nimOldShiftRight) or not defined(nimAshr): +when defined(nimOldShiftRight): const shrDepMessage = "`shr` will become sign preserving." proc `shr`*(x: int, y: SomeInteger): int {.magic: "ShrI", noSideEffect, deprecated: shrDepMessage.} proc `shr`*(x: int8, y: SomeInteger): int8 {.magic: "ShrI", noSideEffect, deprecated: shrDepMessage.} @@ -248,7 +132,7 @@ when defined(nimOldShiftRight) or not defined(nimAshr): proc `shr`*(x: int32, y: SomeInteger): int32 {.magic: "ShrI", noSideEffect, deprecated: shrDepMessage.} proc `shr`*(x: int64, y: SomeInteger): int64 {.magic: "ShrI", noSideEffect, deprecated: shrDepMessage.} else: - proc `shr`*(x: int, y: SomeInteger): int {.magic: "AshrI", noSideEffect.} + proc `shr`*(x: int, y: SomeInteger): int {.magic: "AshrI", noSideEffect.} = ## Computes the `shift right` operation of `x` and `y`, filling ## vacant bit positions with the sign bit. ## @@ -256,87 +140,77 @@ else: ## is different than in *C*. ## ## See also: - ## * `ashr proc <#ashr,int,SomeInteger>`_ for arithmetic shift right - ## - ## .. code-block:: Nim - ## 0b0001_0000'i8 shr 2 == 0b0000_0100'i8 - ## 0b0000_0001'i8 shr 1 == 0b0000_0000'i8 - ## 0b1000_0000'i8 shr 4 == 0b1111_1000'i8 - ## -1 shr 5 == -1 - ## 1 shr 5 == 0 - ## 16 shr 2 == 4 - ## -16 shr 2 == -4 + ## * `ashr func<#ashr,int,SomeInteger>`_ for arithmetic shift right + runnableExamples: + assert 0b0001_0000'i8 shr 2 == 0b0000_0100'i8 + assert 0b0000_0001'i8 shr 1 == 0b0000_0000'i8 + assert 0b1000_0000'i8 shr 4 == 0b1111_1000'i8 + assert -1 shr 5 == -1 + assert 1 shr 5 == 0 + assert 16 shr 2 == 4 + assert -16 shr 2 == -4 proc `shr`*(x: int8, y: SomeInteger): int8 {.magic: "AshrI", noSideEffect.} proc `shr`*(x: int16, y: SomeInteger): int16 {.magic: "AshrI", noSideEffect.} proc `shr`*(x: int32, y: SomeInteger): int32 {.magic: "AshrI", noSideEffect.} proc `shr`*(x: int64, y: SomeInteger): int64 {.magic: "AshrI", noSideEffect.} -proc `shl`*(x: int, y: SomeInteger): int {.magic: "ShlI", noSideEffect.} +proc `shl`*(x: int, y: SomeInteger): int {.magic: "ShlI", noSideEffect.} = ## Computes the `shift left` operation of `x` and `y`. ## ## **Note**: `Operator precedence <manual.html#syntax-precedence>`_ ## is different than in *C*. - ## - ## .. code-block:: Nim - ## 1'i32 shl 4 == 0x0000_0010 - ## 1'i64 shl 4 == 0x0000_0000_0000_0010 + runnableExamples: + assert 1'i32 shl 4 == 0x0000_0010 + assert 1'i64 shl 4 == 0x0000_0000_0000_0010 proc `shl`*(x: int8, y: SomeInteger): int8 {.magic: "ShlI", noSideEffect.} proc `shl`*(x: int16, y: SomeInteger): int16 {.magic: "ShlI", noSideEffect.} proc `shl`*(x: int32, y: SomeInteger): int32 {.magic: "ShlI", noSideEffect.} proc `shl`*(x: int64, y: SomeInteger): int64 {.magic: "ShlI", noSideEffect.} -when defined(nimAshr): - proc ashr*(x: int, y: SomeInteger): int {.magic: "AshrI", noSideEffect.} - ## Shifts right by pushing copies of the leftmost bit in from the left, - ## and let the rightmost bits fall off. - ## - ## Note that `ashr` is not an operator so use the normal function - ## call syntax for it. - ## - ## See also: - ## * `shr proc <#shr,int,SomeInteger>`_ - ## - ## .. code-block:: Nim - ## ashr(0b0001_0000'i8, 2) == 0b0000_0100'i8 - ## ashr(0b1000_0000'i8, 8) == 0b1111_1111'i8 - ## ashr(0b1000_0000'i8, 1) == 0b1100_0000'i8 - proc ashr*(x: int8, y: SomeInteger): int8 {.magic: "AshrI", noSideEffect.} - proc ashr*(x: int16, y: SomeInteger): int16 {.magic: "AshrI", noSideEffect.} - proc ashr*(x: int32, y: SomeInteger): int32 {.magic: "AshrI", noSideEffect.} - proc ashr*(x: int64, y: SomeInteger): int64 {.magic: "AshrI", noSideEffect.} -else: - # used for bootstrapping the compiler - proc ashr*[T](x: T, y: SomeInteger): T = discard - -proc `and`*(x, y: int): int {.magic: "BitandI", noSideEffect.} - ## Computes the `bitwise and` of numbers `x` and `y`. +proc ashr*(x: int, y: SomeInteger): int {.magic: "AshrI", noSideEffect.} = + ## Shifts right by pushing copies of the leftmost bit in from the left, + ## and let the rightmost bits fall off. + ## + ## Note that `ashr` is not an operator so use the normal function + ## call syntax for it. ## - ## .. code-block:: Nim - ## (0b0011 and 0b0101) == 0b0001 - ## (0b0111 and 0b1100) == 0b0100 + ## See also: + ## * `shr func<#shr,int,SomeInteger>`_ + runnableExamples: + assert ashr(0b0001_0000'i8, 2) == 0b0000_0100'i8 + assert ashr(0b1000_0000'i8, 8) == 0b1111_1111'i8 + assert ashr(0b1000_0000'i8, 1) == 0b1100_0000'i8 +proc ashr*(x: int8, y: SomeInteger): int8 {.magic: "AshrI", noSideEffect.} +proc ashr*(x: int16, y: SomeInteger): int16 {.magic: "AshrI", noSideEffect.} +proc ashr*(x: int32, y: SomeInteger): int32 {.magic: "AshrI", noSideEffect.} +proc ashr*(x: int64, y: SomeInteger): int64 {.magic: "AshrI", noSideEffect.} + +proc `and`*(x, y: int): int {.magic: "BitandI", noSideEffect.} = + ## Computes the `bitwise and` of numbers `x` and `y`. + runnableExamples: + assert (0b0011 and 0b0101) == 0b0001 + assert (0b0111 and 0b1100) == 0b0100 proc `and`*(x, y: int8): int8 {.magic: "BitandI", noSideEffect.} proc `and`*(x, y: int16): int16 {.magic: "BitandI", noSideEffect.} proc `and`*(x, y: int32): int32 {.magic: "BitandI", noSideEffect.} proc `and`*(x, y: int64): int64 {.magic: "BitandI", noSideEffect.} -proc `or`*(x, y: int): int {.magic: "BitorI", noSideEffect.} +proc `or`*(x, y: int): int {.magic: "BitorI", noSideEffect.} = ## Computes the `bitwise or` of numbers `x` and `y`. - ## - ## .. code-block:: Nim - ## (0b0011 or 0b0101) == 0b0111 - ## (0b0111 or 0b1100) == 0b1111 + runnableExamples: + assert (0b0011 or 0b0101) == 0b0111 + assert (0b0111 or 0b1100) == 0b1111 proc `or`*(x, y: int8): int8 {.magic: "BitorI", noSideEffect.} proc `or`*(x, y: int16): int16 {.magic: "BitorI", noSideEffect.} proc `or`*(x, y: int32): int32 {.magic: "BitorI", noSideEffect.} proc `or`*(x, y: int64): int64 {.magic: "BitorI", noSideEffect.} -proc `xor`*(x, y: int): int {.magic: "BitxorI", noSideEffect.} +proc `xor`*(x, y: int): int {.magic: "BitxorI", noSideEffect.} = ## Computes the `bitwise xor` of numbers `x` and `y`. - ## - ## .. code-block:: Nim - ## (0b0011 xor 0b0101) == 0b0110 - ## (0b0111 xor 0b1100) == 0b1011 + runnableExamples: + assert (0b0011 xor 0b0101) == 0b0110 + assert (0b0111 xor 0b1100) == 0b1011 proc `xor`*(x, y: int8): int8 {.magic: "BitxorI", noSideEffect.} proc `xor`*(x, y: int16): int16 {.magic: "BitxorI", noSideEffect.} proc `xor`*(x, y: int32): int32 {.magic: "BitxorI", noSideEffect.} @@ -408,7 +282,7 @@ proc `*`*(x, y: uint64): uint64 {.magic: "MulU", noSideEffect.} proc `div`*(x, y: uint): uint {.magic: "DivU", noSideEffect.} ## Computes the integer division for unsigned integers. - ## This is roughly the same as ``trunc(x/y)``. + ## This is roughly the same as `trunc(x/y)`. proc `div`*(x, y: uint8): uint8 {.magic: "DivU", noSideEffect.} proc `div`*(x, y: uint16): uint16 {.magic: "DivU", noSideEffect.} proc `div`*(x, y: uint32): uint32 {.magic: "DivU", noSideEffect.} @@ -416,12 +290,65 @@ proc `div`*(x, y: uint64): uint64 {.magic: "DivU", noSideEffect.} proc `mod`*(x, y: uint): uint {.magic: "ModU", noSideEffect.} ## Computes the integer modulo operation (remainder) for unsigned integers. - ## This is the same as ``x - (x div y) * y``. + ## This is the same as `x - (x div y) * y`. proc `mod`*(x, y: uint8): uint8 {.magic: "ModU", noSideEffect.} proc `mod`*(x, y: uint16): uint16 {.magic: "ModU", noSideEffect.} proc `mod`*(x, y: uint32): uint32 {.magic: "ModU", noSideEffect.} proc `mod`*(x, y: uint64): uint64 {.magic: "ModU", noSideEffect.} +proc `+=`*[T: SomeInteger](x: var T, y: T) {. + magic: "Inc", noSideEffect.} + ## Increments an integer. + +proc `-=`*[T: SomeInteger](x: var T, y: T) {. + magic: "Dec", noSideEffect.} + ## Decrements an integer. + +proc `*=`*[T: SomeInteger](x: var T, y: T) {. + inline, noSideEffect.} = + ## Binary `*=` operator for integers. + x = x * y + +# floating point operations: +proc `+`*(x: float32): float32 {.magic: "UnaryPlusF64", noSideEffect.} +proc `-`*(x: float32): float32 {.magic: "UnaryMinusF64", noSideEffect.} +proc `+`*(x, y: float32): float32 {.magic: "AddF64", noSideEffect.} +proc `-`*(x, y: float32): float32 {.magic: "SubF64", noSideEffect.} +proc `*`*(x, y: float32): float32 {.magic: "MulF64", noSideEffect.} +proc `/`*(x, y: float32): float32 {.magic: "DivF64", noSideEffect.} + +proc `+`*(x: float): float {.magic: "UnaryPlusF64", noSideEffect.} +proc `-`*(x: float): float {.magic: "UnaryMinusF64", noSideEffect.} +proc `+`*(x, y: float): float {.magic: "AddF64", noSideEffect.} +proc `-`*(x, y: float): float {.magic: "SubF64", noSideEffect.} +proc `*`*(x, y: float): float {.magic: "MulF64", noSideEffect.} +proc `/`*(x, y: float): float {.magic: "DivF64", noSideEffect.} + +proc `+=`*[T: float|float32|float64] (x: var T, y: T) {. + inline, noSideEffect.} = + ## Increments in place a floating point number. + x = x + y + +proc `-=`*[T: float|float32|float64] (x: var T, y: T) {. + inline, noSideEffect.} = + ## Decrements in place a floating point number. + x = x - y + +proc `*=`*[T: float|float32|float64] (x: var T, y: T) {. + inline, noSideEffect.} = + ## Multiplies in place a floating point number. + x = x * y + +proc `/=`*(x: var float64, y: float64) {.inline, noSideEffect.} = + ## Divides in place a floating point number. + x = x / y + +proc `/=`*[T: float|float32](x: var T, y: T) {.inline, noSideEffect.} = + ## Divides in place a floating point number. + x = x / y + +# the following have to be included in system, not imported for some reason: + proc `+%`*(x, y: int): int {.inline.} = ## Treats `x` and `y` as unsigned and adds them. ## @@ -476,16 +403,3 @@ proc `%%`*(x, y: int8): int8 {.inline.} = cast[int8](cast[uint8](x) mod cast[u proc `%%`*(x, y: int16): int16 {.inline.} = cast[int16](cast[uint16](x) mod cast[uint16](y)) proc `%%`*(x, y: int32): int32 {.inline.} = cast[int32](cast[uint32](x) mod cast[uint32](y)) proc `%%`*(x, y: int64): int64 {.inline.} = cast[int64](cast[uint64](x) mod cast[uint64](y)) - -proc `+=`*[T: SomeInteger](x: var T, y: T) {. - magic: "Inc", noSideEffect.} - ## Increments an integer. - -proc `-=`*[T: SomeInteger](x: var T, y: T) {. - magic: "Dec", noSideEffect.} - ## Decrements an integer. - -proc `*=`*[T: SomeInteger](x: var T, y: T) {. - inline, noSideEffect.} = - ## Binary `*=` operator for integers. - x = x * y |