Package ghidra.util

Class NumericUtilities

java.lang.Object

ghidra.util.NumericUtilities

public final class NumericUtilities
extends java.lang.Object

Field Summary

Fields

Change	Modifier and Type	Field	Description
	static java.math.BigInteger	MAX_SIGNED_LONG
NEW	static long	MAX_UNSIGNED_INT32_AS_LONG
	static java.math.BigInteger	MAX_UNSIGNED_LONG

Method Summary

Change	Modifier and Type	Method	Description
	static long	bigIntegerToUnsignedLong(java.math.BigInteger value)
	static java.lang.String	convertBytesToString(byte[] bytes)	Convert a byte array into a hexadecimal string.
	static java.lang.String	convertBytesToString(byte[] bytes, int start, int len, java.lang.String delimeter)	Convert a byte array into a hexadecimal string.
	static java.lang.String	convertBytesToString(byte[] bytes, java.lang.String delimeter)	Convert a byte array into a hexadecimal string.
	static java.lang.String	convertBytesToString(java.lang.Iterable<java.lang.Byte> bytes, java.lang.String delimiter)	Convert a bytes into a hexadecimal string.
	static java.lang.String	convertBytesToString(java.util.Iterator<java.lang.Byte> bytes, java.lang.String delimiter)	Convert a bytes into a hexadecimal string.
	static java.lang.String	convertBytesToString(java.util.stream.Stream<java.lang.Byte> bytes, java.lang.String delimiter)	Convert a bytes into a hexadecimal string.
	static void	convertHexStringToMaskedValue(java.util.concurrent.atomic.AtomicLong msk, java.util.concurrent.atomic.AtomicLong val, java.lang.String hex, int n, int spaceevery, java.lang.String spacer)	The reverse of convertMaskedValueToHexString(long, long, int, boolean, int, String)
	static java.lang.String	convertMaskedValueToHexString(long msk, long val, int n, boolean truncate, int spaceevery, java.lang.String spacer)	Convert a masked value into a hexadecimal-ish string.
	static java.lang.String	convertMaskToHexString(long msk, int n, boolean truncate, int spaceevery, java.lang.String spacer)	Convert a mask to a hexadecimal-ish string.
	static byte[]	convertStringToBytes(java.lang.String hexString)	Parse hexadecimal digits into a byte array.
	static java.lang.String	formatNumber(long number, int radix)	Render number in different bases using the default signedness mode.
	static java.lang.String	formatNumber(long number, int radix, SignednessFormatMode mode)	Provide renderings of number in different bases: 0 - renders number as an escaped character sequence 2 - renders number as a base-2 integer 8 - renders number as a base-8 integer 10 - renders number as a base-10 integer 16 (default) - renders number as a base-16 integer Number Radix DEFAULT Mode Alias UNSIGNED Mode Value SIGNED Mode Value 100 2 UNSIGNED 1100100b 1100100b 100 8 UNSIGNED 144o 144o 100 10 SIGNED 100 100 100 16 UNSIGNED 64h 64h -1 2 UNSIGNED 1111111111111111111111111111111111111111111111111111111111111111b -1b -1 8 UNSIGNED 1777777777777777777777o -1o -1 10 SIGNED 18446744073709551615 -1 -1 16 UNSIGNED ffffffffffffffffh -1h -100 2 UNSIGNED 1111111111111111111111111111111111111111111111111111111110011100b -1100100b -100 8 UNSIGNED 1777777777777777777634o -144o -100 10 SIGNED 18446744073709551516 -100 -100 16 UNSIGNED ffffffffffffff9ch -64h
	static long	getUnsignedAlignedValue(long unsignedValue, long alignment)	Get an unsigned aligned value corresponding to the specified unsigned value which will be greater than or equal the specified value.
	static boolean	isFloatingPointType(java.lang.Class<?> numClass)	Determine if the provided Number class is a floating-point type.
	static boolean	isFloatingPointType(java.lang.Number number)	Determine if the provided Number is a floating-point type -- Float or Double.
	static boolean	isIntegerType(java.lang.Class<?> numClass)	Determine if the provided Number class is an integer type.
	static boolean	isIntegerType(java.lang.Number number)	Determine if the provided Number is an integer type -- Byte, Short, Integer, or Long.
	static java.math.BigInteger	parseHexBigInteger(java.lang.String numStr)
	static long	parseHexLong(java.lang.String numStr)
	static long	parseLong(java.lang.String numStr)	parses the given string as a numeric value, detecting whether or not it begins with a Hex prefix, and if not, parses as a long int value.
	static long	parseNumber(java.lang.String numStr)	parses the given string as a numeric value, detecting whether or not it begins with a Hex prefix, and if not, parses as a long int value.
	static long	parseOctLong(java.lang.String numStr)	parses the given string as a numeric value, detecting whether or not it begins with a Hex prefix, and if not, parses as a long int value.
	static java.lang.String	toHexString(long value)	returns the value of the specified long as hexadecimal, prefixing with the HEX_PREFIX_x string.
	static java.lang.String	toHexString(long value, int size)	returns the value of the specified long as hexadecimal, prefixing with the HEX_PREFIX_x string.
	static java.lang.String	toSignedHexString(long value)	returns the value of the specified long as signed hexadecimal, prefixing with the HEX_PREFIX_x string.
	static java.lang.String	toString(byte b)	Convert the given byte into a two character String, padding with a leading 0 if needed.
	static java.math.BigInteger	unsignedLongToBigInteger(long value)	Converts a unsigned long value, which is currently stored in a java signed long, into a BigInteger.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAX_UNSIGNED_LONG

public static final java.math.BigInteger MAX_UNSIGNED_LONG

MAX_SIGNED_LONG

public static final java.math.BigInteger MAX_SIGNED_LONG

MAX_UNSIGNED_INT32_AS_LONG NEW

public static final long MAX_UNSIGNED_INT32_AS_LONG

See Also:

Constant Field Values

Method Detail

parseNumber

public static long parseNumber(java.lang.String numStr)

parses the given string as a numeric value, detecting whether or not it begins with a Hex prefix, and if not, parses as a long int value.

parseLong

public static long parseLong(java.lang.String numStr)

parses the given string as a numeric value, detecting whether or not it begins with a Hex prefix, and if not, parses as a long int value.

parseOctLong

public static long parseOctLong(java.lang.String numStr)

parses the given string as a numeric value, detecting whether or not it begins with a Hex prefix, and if not, parses as a long int value.

parseHexLong

public static long parseHexLong(java.lang.String numStr)

parseHexBigInteger

public static java.math.BigInteger parseHexBigInteger(java.lang.String numStr)

toHexString

public static final java.lang.String toHexString(long value)

returns the value of the specified long as hexadecimal, prefixing with the HEX_PREFIX_x string.

Parameters:

value - the long value to convert

toHexString

public static final java.lang.String toHexString(long value,
                                                 int size)

returns the value of the specified long as hexadecimal, prefixing with the HEX_PREFIX_x string.

Parameters:

value - the long value to convert

size - number of bytes to be represented

toSignedHexString

public static final java.lang.String toSignedHexString(long value)

returns the value of the specified long as signed hexadecimal, prefixing with the HEX_PREFIX_x string.

Parameters:

value - the long value to convert

unsignedLongToBigInteger

public static java.math.BigInteger unsignedLongToBigInteger(long value)

Converts a unsigned long value, which is currently stored in a java signed long, into a BigInteger.

In other words, the full 64 bits of the primitive java signed long is being used to store an unsigned value. This method converts this into a positive BigInteger value.

Parameters:

value - java unsigned long value stuffed into a java signed long

Returns:

new BigInteger with the positive value of the unsigned long value

bigIntegerToUnsignedLong

public static long bigIntegerToUnsignedLong(java.math.BigInteger value)

getUnsignedAlignedValue

public static long getUnsignedAlignedValue(long unsignedValue,
                                           long alignment)

Get an unsigned aligned value corresponding to the specified unsigned value which will be greater than or equal the specified value.

Parameters:

unsignedValue - value to be aligned

alignment - alignment

Returns:

aligned value

convertMaskedValueToHexString

public static java.lang.String convertMaskedValueToHexString(long msk,
                                                             long val,
                                                             int n,
                                                             boolean truncate,
                                                             int spaceevery,
                                                             java.lang.String spacer)

Convert a masked value into a hexadecimal-ish string. Converts the data to hexadecimal, placing an X where a nibble is unknown. Where a nibble is partially defined, it is displayed as four bits in brackets []. Bits are displayed as x, or the defined value. For example, consider the mask 00001111:01011100, and the value 00001001:00011000. This will display as X8:[x0x1][10xx]. To see the correlation, consider the table:

Display	X	8	:	[x0x1]	[10xx]
Mask	0000	1111	:	0101	1100
Value	0000	1000	:	0001	1000

Parameters:

msk - the mask

val - the value

n - the number of nibbles, starting at the right. The example uses 4.

truncate - true if leading Xs may be truncated. The example uses false.

spaceevery - how many nibbles in spaced groups, 0 for no spaces. The example uses 2.

spacer - the group separator, if applicable. The example uses ':'.

Returns:

the string representation

See Also:

convertMaskToHexString(long, int, boolean, int, String), convertHexStringToMaskedValue(AtomicLong, AtomicLong, String, int, int, String)

convertMaskToHexString

public static java.lang.String convertMaskToHexString(long msk,
                                                      int n,
                                                      boolean truncate,
                                                      int spaceevery,
                                                      java.lang.String spacer)

Convert a mask to a hexadecimal-ish string. Converts the mask in a similar way to convertMaskedValueToHexString(long, long, int, boolean, int, String). Philosophically, it is hexadecimal, but the only valid digits are 0 and F. Any partially-included nibble will be broken down into bracketed bits. Displaying masks in this way is convenient when shown proximal to related masked values.

Parameters:

msk - the mask

n - the number of nibbles, starting at the right

truncate - true if leading Xs may be truncated

spaceevery - how many nibbles in spaced groups, 0 for no spaces

spacer - the group separator, if applicable

Returns:

the string representation

See Also:

convertMaskedValueToHexString(long, long, int, boolean, int, String), convertHexStringToMaskedValue(AtomicLong, AtomicLong, String, int, int, String)

convertHexStringToMaskedValue

public static void convertHexStringToMaskedValue(java.util.concurrent.atomic.AtomicLong msk,
                                                 java.util.concurrent.atomic.AtomicLong val,
                                                 java.lang.String hex,
                                                 int n,
                                                 int spaceevery,
                                                 java.lang.String spacer)

The reverse of convertMaskedValueToHexString(long, long, int, boolean, int, String)

Parameters:

msk - an object to receive the resulting mask

val - an object to receive the resulting value

hex - the input string to parse

n - the number of nibbles to parse (they are stored right aligned in the result)

spaceevery - how many nibbles are expected between spacers

spacer - the spacer

See Also:

convertMaskedValueToHexString(long, long, int, boolean, int, String), convertMaskToHexString(long, int, boolean, int, String)

formatNumber

public static java.lang.String formatNumber(long number,
                                            int radix)

Render number in different bases using the default signedness mode.

This invokes formatNumber(long, int, SignednessFormatMode) with a mode parameter of SignednessFormatMode.DEFAULT.

Parameters:

number - The number to represent

radix - the base in which number is represented

Returns:

formatted string of the number parameter in provided radix base

See Also:

formatNumber(long, int, SignednessFormatMode)

formatNumber

public static java.lang.String formatNumber(long number,
                                            int radix,
                                            SignednessFormatMode mode)

Provide renderings of number in different bases:

• 0 - renders number as an escaped character sequence
• 2 - renders number as a base-2 integer
• 8 - renders number as a base-8 integer
• 10 - renders number as a base-10 integer
• 16 (default) - renders number as a base-16 integer

Number	Radix	DEFAULT Mode Alias	UNSIGNED Mode Value	SIGNED Mode Value
100	2	UNSIGNED	1100100b	1100100b
100	8	UNSIGNED	144o	144o
100	10	SIGNED	100	100
100	16	UNSIGNED	64h	64h
-1	2	UNSIGNED	1111111111111111111111111111111111111111111111111111111111111111b	-1b
-1	8	UNSIGNED	1777777777777777777777o	-1o
-1	10	SIGNED	18446744073709551615	-1
-1	16	UNSIGNED	ffffffffffffffffh	-1h
-100	2	UNSIGNED	1111111111111111111111111111111111111111111111111111111110011100b	-1100100b
-100	8	UNSIGNED	1777777777777777777634o	-144o
-100	10	SIGNED	18446744073709551516	-100
-100	16	UNSIGNED	ffffffffffffff9ch	-64h

Parameters:

number - The number to represent

radix - The base in which number is represented

mode - Specifies how the number is formatted with respect to its signed-ness

Returns:

number string in the given base

convertStringToBytes

public static byte[] convertStringToBytes(java.lang.String hexString)

Parse hexadecimal digits into a byte array.

Parameters:

hexString - hexadecimal digits

Returns:

numeric value as a byte array, or null if string contains invalid hex characters.

toString

public static java.lang.String toString(byte b)

Convert the given byte into a two character String, padding with a leading 0 if needed.

Parameters:

b - the byte

Returns:

the byte string

convertBytesToString

public static java.lang.String convertBytesToString(byte[] bytes)

Convert a byte array into a hexadecimal string.

Parameters:

bytes - byte array

Returns:

hex string representation

convertBytesToString

public static java.lang.String convertBytesToString(byte[] bytes,
                                                    java.lang.String delimeter)

Convert a byte array into a hexadecimal string.

Parameters:

bytes - byte array

delimeter - the text between byte strings

Returns:

hex string representation

convertBytesToString

public static java.lang.String convertBytesToString(byte[] bytes,
                                                    int start,
                                                    int len,
                                                    java.lang.String delimeter)

Convert a byte array into a hexadecimal string.

Parameters:

bytes - byte array

start - start index

len - number of bytes to convert

delimeter - the text between byte strings

Returns:

hex string representation

convertBytesToString

public static java.lang.String convertBytesToString(java.util.Iterator<java.lang.Byte> bytes,
                                                    java.lang.String delimiter)

Convert a bytes into a hexadecimal string.

Parameters:

bytes - an iterator of bytes

delimiter - the text between byte strings; null is allowed

Returns:

hex string representation

convertBytesToString

public static java.lang.String convertBytesToString(java.lang.Iterable<java.lang.Byte> bytes,
                                                    java.lang.String delimiter)

Convert a bytes into a hexadecimal string.

Parameters:

bytes - an iterable of bytes

delimiter - the text between byte strings; null is allowed

Returns:

hex string representation

convertBytesToString

public static java.lang.String convertBytesToString(java.util.stream.Stream<java.lang.Byte> bytes,
                                                    java.lang.String delimiter)

Convert a bytes into a hexadecimal string.

Parameters:

bytes - an stream of bytes

delimiter - the text between byte strings; null is allowed

Returns:

hex string representation

isIntegerType

public static boolean isIntegerType(java.lang.Number number)

Determine if the provided Number is an integer type -- Byte, Short, Integer, or Long.

Parameters:

number - the object to check for for integer-type

Returns:

true if the provided number is an integer-type, false otherwise

isIntegerType

public static boolean isIntegerType(java.lang.Class<?> numClass)

Determine if the provided Number class is an integer type.

Parameters:

numClass - Class of an object

Returns:

true if the class parameter is a integer type, false otherwise

isFloatingPointType

public static boolean isFloatingPointType(java.lang.Number number)

Determine if the provided Number is a floating-point type -- Float or Double.

Parameters:

number - the object to check for for floating-point-type

Returns:

true if the provided number is a floating-point-type, false otherwise

isFloatingPointType

public static boolean isFloatingPointType(java.lang.Class<?> numClass)

Determine if the provided Number class is a floating-point type.

Parameters:

numClass - Class of an object

Returns:

true if the class parameter is a floating-point type, false otherwise