spire.math.real

BigDecimalApproximations

object BigDecimalApproximations

Provides absolute and relative approximations to RealLike types that have mixed in a SeparationBound. The absolute approximations take BigDecimal for their context, returning a BigDecimal that is equal to the RealLike +/- the context (error). The relative approximations take a MathContext specifying how many digits to determine the value of the RealLike to.

Note that a relative approximation of 0 is always 0.

Here, we mostly work with java.math.BigDecimal as its operations let you provide a MathContext directly. However, I'm pretty sure that a.add(b, mc) is equivalent to (a + b).round(mc).

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Type Members

  1. class Absolute[A <: RealLike[A] with SeparationBound[A]] extends Approximation[A, BigDecimal, BigDecimal]

  2. final class MathContextOps extends AnyRef

    Removes some of the tedium when dealing with manipulating the precision of MathContexts.

  3. class Relative[A <: RealLike[A] with SeparationBound[A]] extends Approximation[A, MathContext, BigDecimal]

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  1. final def !=(arg0: AnyRef): Boolean

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  4. final def ==(arg0: AnyRef): Boolean

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  5. final def ==(arg0: Any): Boolean

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  6. implicit def Absolute[A <: RealLike[A] with SeparationBound[A]](implicit arg0: Coexpr[A]): Absolute[A]

  7. implicit def Relative[A <: RealLike[A] with SeparationBound[A]](implicit arg0: Coexpr[A]): Relative[A]

  8. final def asInstanceOf[T0]: T0

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  9. def clone(): AnyRef

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  15. final def isInstanceOf[T0]: Boolean

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  16. implicit def mathContextOps(omc: MathContext): MathContextOps

  17. final def ne(arg0: AnyRef): Boolean

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  18. final def notify(): Unit

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  19. final def notifyAll(): Unit

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  20. final def synchronized[T0](arg0: ⇒ T0): T0

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