PosZFiniteFloat

An AnyVal for finite non-negative Floats.

Because PosZFiniteFloat is an AnyVal it will usually be as efficient as an Float, being boxed only when an Float would have been boxed.

The PosZFiniteFloat.apply factory method is implemented in terms of a macro that checks literals for validity at compile time. Calling PosZFiniteFloat.apply with a literal Float value will either produce a valid PosZFiniteFloat instance at run time or an error at compile time. Here's an example:

scala> import anyvals._
import anyvals._

scala> PosZFiniteFloat(1.1fF)
res0: org.scalactic.anyvals.PosZFiniteFloat = PosZFiniteFloat(1.1f)

scala> PosZFiniteFloat(-1.1fF)
<console>:14: error: PosZFiniteFloat.apply can only be invoked on a finite non-negative (i >= 0.0f && i != Float.PositiveInfinity) floating point literal, like PosZFiniteFloat(1.1fF).
              PosZFiniteFloat(1.1fF)
                      ^

PosZFiniteFloat.apply cannot be used if the value being passed is a variable (i.e., not a literal), because the macro cannot determine the validity of variables at compile time (just literals). If you try to pass a variable to PosZFiniteFloat.apply, you'll get a compiler error that suggests you use a different factor method, PosZFiniteFloat.from, instead:

scala> val x = 1.1fF
x: Float = 1.1f

scala> PosZFiniteFloat(x)
<console>:15: error: PosZFiniteFloat.apply can only be invoked on a floating point literal, like PosZFiniteFloat(1.1fF). Please use PosZFiniteFloat.from instead.
              PosZFiniteFloat(x)
                      ^

The PosZFiniteFloat.from factory method will inspect the value at runtime and return an Option[PosZFiniteFloat]. If the value is valid, PosZFiniteFloat.from will return a Some[PosZFiniteFloat], else it will return a None. Here's an example:

scala> PosZFiniteFloat.from(x)
res3: Option[org.scalactic.anyvals.PosZFiniteFloat] = Some(PosZFiniteFloat(1.1f))

scala> val y = -1.1fF
y: Float = -1.1f

scala> PosZFiniteFloat.from(y)
res4: Option[org.scalactic.anyvals.PosZFiniteFloat] = None

The PosZFiniteFloat.apply factory method is marked implicit, so that you can pass literal Floats into methods that require PosZFiniteFloat, and get the same compile-time checking you get when calling PosZFiniteFloat.apply explicitly. Here's an example:

scala> def invert(pos: PosZFiniteFloat): Float = Float.MaxValue - pos
invert: (pos: org.scalactic.anyvals.PosZFiniteFloat)Float

scala> invert(1.1fF)
res5: Float = 3.4028235E38

scala> invert(Float.MaxValue)
res6: Float = 0.0

scala> invert(-1.1fF)
<console>:15: error: PosZFiniteFloat.apply can only be invoked on a finite non-negative (i >= 0.0f && i != Float.PositiveInfinity) floating point literal, like PosZFiniteFloat(1.1fF).
              invert(0.0F)
                     ^

scala> invert(-1.1fF)
<console>:15: error: PosZFiniteFloat.apply can only be invoked on a finite non-negative (i >= 0.0f && i != Float.PositiveInfinity) floating point literal, like PosZFiniteFloat(1.1fF).
              invert(-1.1fF)
                      ^

This example also demonstrates that the PosZFiniteFloat companion object also defines implicit widening conversions when no loss of precision will occur. This makes it convenient to use a PosZFiniteFloat where a Float or wider type is needed. An example is the subtraction in the body of the invert method defined above, Float.MaxValue - pos. Although Float.MaxValue is a Float, which has no - method that takes a PosZFiniteFloat (the type of pos), you can still subtract pos, because the PosZFiniteFloat will be implicitly widened to Float.

Source: PosZFiniteFloat.scala

Linear Supertypes

AnyVal, Any

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
Any
final def ##(): Int

Definition Classes
Any
def %(x: Double): Double

Returns the remainder of the division of this value by x.
def %(x: Float): Float

Returns the remainder of the division of this value by x.
def %(x: Long): Float

Returns the remainder of the division of this value by x.
def %(x: Int): Float

Returns the remainder of the division of this value by x.
def %(x: Char): Float

Returns the remainder of the division of this value by x.
def %(x: Short): Float

Returns the remainder of the division of this value by x.
def %(x: Byte): Float

Returns the remainder of the division of this value by x.
def *(x: Double): Double

Returns the product of this value and x.
def *(x: Float): Float

Returns the product of this value and x.
def *(x: Long): Float

Returns the product of this value and x.
def *(x: Int): Float

Returns the product of this value and x.
def *(x: Char): Float

Returns the product of this value and x.
def *(x: Short): Float

Returns the product of this value and x.
def *(x: Byte): Float

Returns the product of this value and x.
def +(x: Double): Double

Returns the sum of this value and x.
def +(x: Float): Float

Returns the sum of this value and x.
def +(x: Long): Float

Returns the sum of this value and x.
def +(x: Int): Float

Returns the sum of this value and x.
def +(x: Char): Float

Returns the sum of this value and x.
def +(x: Short): Float

Returns the sum of this value and x.
def +(x: Byte): Float

Returns the sum of this value and x.
def +(x: String): String

Converts this PosZFiniteFloat's value to a string then concatenates the given string.
Converts this PosZFiniteFloat's value to a string then concatenates the given string.
def -(x: Double): Double

Returns the difference of this value and x.
def -(x: Float): Float

Returns the difference of this value and x.
def -(x: Long): Float

Returns the difference of this value and x.
def -(x: Int): Float

Returns the difference of this value and x.
def -(x: Char): Float

Returns the difference of this value and x.
def -(x: Short): Float

Returns the difference of this value and x.
def -(x: Byte): Float

Returns the difference of this value and x.
def /(x: Double): Double

Returns the quotient of this value and x.
def /(x: Float): Float

Returns the quotient of this value and x.
def /(x: Long): Float

Returns the quotient of this value and x.
def /(x: Int): Float

Returns the quotient of this value and x.
def /(x: Char): Float

Returns the quotient of this value and x.
def /(x: Short): Float

Returns the quotient of this value and x.
def /(x: Byte): Float

Returns the quotient of this value and x.
def <(x: Double): Boolean

Returns true if this value is less than x, false otherwise.
def <(x: Float): Boolean

Returns true if this value is less than x, false otherwise.
def <(x: Long): Boolean

Returns true if this value is less than x, false otherwise.
def <(x: Int): Boolean

Returns true if this value is less than x, false otherwise.
def <(x: Char): Boolean

Returns true if this value is less than x, false otherwise.
def <(x: Short): Boolean

Returns true if this value is less than x, false otherwise.
def <(x: Byte): Boolean

Returns true if this value is less than x, false otherwise.
def <=(x: Double): Boolean

Returns true if this value is less than or equal to x, false otherwise.
def <=(x: Float): Boolean

Returns true if this value is less than or equal to x, false otherwise.
def <=(x: Long): Boolean

Returns true if this value is less than or equal to x, false otherwise.
def <=(x: Int): Boolean

Returns true if this value is less than or equal to x, false otherwise.
def <=(x: Char): Boolean

Returns true if this value is less than or equal to x, false otherwise.
def <=(x: Short): Boolean

Returns true if this value is less than or equal to x, false otherwise.
def <=(x: Byte): Boolean

Returns true if this value is less than or equal to x, false otherwise.
final def ==(arg0: Any): Boolean

Definition Classes
Any
def >(x: Double): Boolean

Returns true if this value is greater than x, false otherwise.
def >(x: Float): Boolean

Returns true if this value is greater than x, false otherwise.
def >(x: Long): Boolean

Returns true if this value is greater than x, false otherwise.
def >(x: Int): Boolean

Returns true if this value is greater than x, false otherwise.
def >(x: Char): Boolean

Returns true if this value is greater than x, false otherwise.
def >(x: Short): Boolean

Returns true if this value is greater than x, false otherwise.
def >(x: Byte): Boolean

Returns true if this value is greater than x, false otherwise.
def >=(x: Double): Boolean

Returns true if this value is greater than or equal to x, false otherwise.
def >=(x: Float): Boolean

Returns true if this value is greater than or equal to x, false otherwise.
def >=(x: Long): Boolean

Returns true if this value is greater than or equal to x, false otherwise.
def >=(x: Int): Boolean

Returns true if this value is greater than or equal to x, false otherwise.
def >=(x: Char): Boolean

Returns true if this value is greater than or equal to x, false otherwise.
def >=(x: Short): Boolean

Returns true if this value is greater than or equal to x, false otherwise.
def >=(x: Byte): Boolean

Returns true if this value is greater than or equal to x, false otherwise.
final def asInstanceOf[T0]: T0

Definition Classes
Any
def ceil: PosZFiniteFloat

Returns the smallest (closest to 0) PosZFiniteFloat that is greater than or equal to this PosZFiniteFloat and represents a mathematical integer.
def ensuringValid(f: (Float) ⇒ Float): PosZFiniteFloat

Applies the passed Float => Float function to the underlying Float value, and if the result is positive, returns the result wrapped in a PosZFiniteFloat, else throws AssertionError.
Applies the passed Float => Float function to the underlying Float value, and if the result is positive, returns the result wrapped in a PosZFiniteFloat, else throws AssertionError.
This method will inspect the result of applying the given function to this PosZFiniteFloat's underlying Float value and if the result is finite non-negative, it will return a PosZFiniteFloat representing that value. Otherwise, the Float value returned by the given function is not finite non-negative, so this method will throw AssertionError.
This method differs from a vanilla assert or ensuring call in that you get something you didn't already have if the assertion succeeds: a type that promises an Float is finite non-negative. With this method, you are asserting that you are convinced the result of the computation represented by applying the given function to this PosZFiniteFloat's value will not produce invalid value. Instead of producing such invalid values, this method will throw AssertionError.
f
the Float => Float function to apply to this PosZFiniteFloat's underlying Float value.
returns
the result of applying this PosZFiniteFloat's underlying Float value to to the passed function, wrapped in a PosZFiniteFloat if it is finite non-negative (else throws AssertionError).

Exceptions thrown
AssertionError if the result of applying this PosZFiniteFloat's underlying Float value to to the passed function is not finite non-negative.
def floor: PosZFiniteFloat

Returns the greatest (closest to infinity) PosZFiniteFloat that is less than or equal to this PosZFiniteFloat and represents a mathematical integer.
def getClass(): Class[_ <: AnyVal]

Definition Classes
AnyVal → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def isWhole: Boolean

Indicates whether this PosZFiniteFloat has a value that is a whole number: it is finite and it has no fraction part.
def max(that: PosZFiniteFloat): PosZFiniteFloat

Returns this if this > that or that otherwise.
Returns this if this > that or that otherwise.
def min(that: PosZFiniteFloat): PosZFiniteFloat

Returns this if this < that or that otherwise.
Returns this if this < that or that otherwise.
def round: PosZInt

Rounds this PosZFiniteFloat value to the nearest whole number value that can be expressed as an PosZInt, returning the result as a PosZInt.
def toByte: Byte

Converts this PosZFiniteFloat to a Byte.
Converts this PosZFiniteFloat to a Byte.
def toChar: Char

Converts this PosZFiniteFloat to a Char.
Converts this PosZFiniteFloat to a Char.
def toDegrees: Float

Converts an angle measured in radians to an approximately equivalent angle measured in degrees.
Converts an angle measured in radians to an approximately equivalent angle measured in degrees.
returns
the measurement of the angle x in degrees.
def toDouble: Double

Converts this PosZFiniteFloat to a Double.
Converts this PosZFiniteFloat to a Double.
def toFloat: Float

Converts this PosZFiniteFloat to a Float.
Converts this PosZFiniteFloat to a Float.
def toInt: Int

Converts this PosZFiniteFloat to an Int.
Converts this PosZFiniteFloat to an Int.
def toLong: Long

Converts this PosZFiniteFloat to a Long.
Converts this PosZFiniteFloat to a Long.
def toRadians: Float

Converts an angle measured in degrees to an approximately equivalent angle measured in radians.
Converts an angle measured in degrees to an approximately equivalent angle measured in radians.
returns
the measurement of the angle x in radians.
def toShort: Short

Converts this PosZFiniteFloat to a Short.
Converts this PosZFiniteFloat to a Short.
def toString(): String

A string representation of this PosZFiniteFloat.
A string representation of this PosZFiniteFloat.

Definition Classes
PosZFiniteFloat → Any
def unary_+: PosZFiniteFloat

Returns this value, unmodified.
def unary_-: NegZFiniteFloat

Returns the negation of this value.
val value: Float

The Float value underlying this PosZFiniteFloat.
The Float value underlying this PosZFiniteFloat.

Related Docs: object PosZFiniteFloat | package anyvals

final class PosZFiniteFloat extends AnyVal

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

def %(x: Double): Double

def %(x: Float): Float

def %(x: Long): Float

def %(x: Int): Float

def %(x: Char): Float

def %(x: Short): Float

def %(x: Byte): Float

def *(x: Double): Double

def *(x: Float): Float

def *(x: Long): Float

def *(x: Int): Float

def *(x: Char): Float

def *(x: Short): Float

def *(x: Byte): Float

def +(x: Double): Double

def +(x: Float): Float

def +(x: Long): Float

def +(x: Int): Float

def +(x: Char): Float

def +(x: Short): Float

def +(x: Byte): Float

def +(x: String): String

def -(x: Double): Double

def -(x: Float): Float

def -(x: Long): Float

def -(x: Int): Float

def -(x: Char): Float

def -(x: Short): Float

def -(x: Byte): Float

def /(x: Double): Double

def /(x: Float): Float

def /(x: Long): Float

def /(x: Int): Float

def /(x: Char): Float

def /(x: Short): Float

def /(x: Byte): Float

def <(x: Double): Boolean

def <(x: Float): Boolean

def <(x: Long): Boolean

def <(x: Int): Boolean

def <(x: Char): Boolean

def <(x: Short): Boolean

def <(x: Byte): Boolean

def <=(x: Double): Boolean

def <=(x: Float): Boolean

def <=(x: Long): Boolean

def <=(x: Int): Boolean

def <=(x: Char): Boolean

def <=(x: Short): Boolean

def <=(x: Byte): Boolean

final def ==(arg0: Any): Boolean

def >(x: Double): Boolean

def >(x: Float): Boolean

def >(x: Long): Boolean

def >(x: Int): Boolean

def >(x: Char): Boolean

def >(x: Short): Boolean

def >(x: Byte): Boolean

def >=(x: Double): Boolean

def >=(x: Float): Boolean

def >=(x: Long): Boolean

def >=(x: Int): Boolean

def >=(x: Char): Boolean

def >=(x: Short): Boolean

def >=(x: Byte): Boolean

final def asInstanceOf[T0]: T0

def ceil: PosZFiniteFloat

def ensuringValid(f: (Float) ⇒ Float): PosZFiniteFloat

def floor: PosZFiniteFloat

def getClass(): Class[_ <: AnyVal]

final def isInstanceOf[T0]: Boolean

def isWhole: Boolean

def max(that: PosZFiniteFloat): PosZFiniteFloat

def min(that: PosZFiniteFloat): PosZFiniteFloat