trait ScriptNumberUtil extends AnyRef

Created by chris on 6/5/16. Numbers in script are unique in the fact that they don't follow a conventional signed numbering system such as ones complement or twos complement. The bitcoin protocol uses little endian notation which means the most significant bit indicates the sign on the number we are interpreting. The rest of the bits are used to determine what that number is. See this irc log for more info https://botbot.me/freenode/bitcoin-core-dev/2016-06-06/?tz=America/Chicago

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ScriptNumberUtil
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  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def changeSignBitToNegative(bytes: ByteVector): ByteVector
  6. def changeSignBitToNegative(hex: String): ByteVector
  7. def changeSignBitToPositive(hex: String): ByteVector
  8. def changeSignBitToPositive(bytes: ByteVector): ByteVector

    Change sign bit to positive

  9. def clone(): AnyRef
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  10. final def eq(arg0: AnyRef): Boolean
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  11. def equals(arg0: AnyRef): Boolean
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  12. def finalize(): Unit
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    @throws(classOf[java.lang.Throwable])
  13. def firstByteAllZeros(hex: String): Boolean
  14. def firstByteAllZeros(bytes: ByteVector): Boolean
  15. final def getClass(): Class[_ <: AnyRef]
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  16. def hashCode(): Int
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  17. final def isInstanceOf[T0]: Boolean
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  18. def isNegative(bytes: ByteVector): Boolean
  19. def isNegative(hex: String): Boolean
  20. def isPositive(hex: String): Boolean

    Determines if a given hex string is a positive number

  21. def isPositive(bytes: ByteVector): Boolean

    Determines if a byte array is a positive or negative number

  22. def isZero(x: ScriptNumber): Boolean

    Checks if the two given numbers are equivalent to zero in Script.

    Checks if the two given numbers are equivalent to zero in Script. Unfortunatey Script is one's complement which means we have things like negative zero, and also there isn't an enforcement of a minimal representation of zero, which means 0x00 = 0x0000 = 0x0000000.. == OP_0

  23. def longToByteVector(long: Long): ByteVector

    Converts a long number to the bytevec representation in Script

  24. def longToHex(long: Long): String

    Converts a long number to the representation of number inside of Bitcoin script's number system

  25. final def ne(arg0: AnyRef): Boolean
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  26. final def notify(): Unit
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  27. final def notifyAll(): Unit
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  28. final def synchronized[T0](arg0: => T0): T0
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  29. def toByteVec(long: Long): ByteVector
  30. def toInt(bytes: ByteVector): Int

    Takes in a sequence of bytes and converts it into a signed number This should only be used for numbers inside of Script

  31. def toInt(hex: String): Int

    Takes in a hex string and converts it into a signed number This function interprets the bytes as little endian numbers This should only be used for numbers inside of Script

  32. def toLong(bytes: ByteVector): Long

    Takes a sequence of bytes and converts it in to signed number inside of bitcoin script's numbering system This function interprets the bytes as little endian numbers This should only be used for numbers inside of Script

  33. def toLong(hex: String): Long

    Takes a hex number and converts it into a signed number used in the bitcoin script's numbering system.

    Takes a hex number and converts it into a signed number used in the bitcoin script's numbering system. This function interprets the bytes as little endian numbers This should only be used for numbers inside of Script

  34. def toString(): String
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  35. final def wait(): Unit
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    @throws(classOf[java.lang.InterruptedException])
  36. final def wait(arg0: Long, arg1: Int): Unit
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    @throws(classOf[java.lang.InterruptedException])
  37. final def wait(arg0: Long): Unit
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