N (Java Tool 1.2.2 API)

java.lang.Object
- org.osgl.util.N

Direct Known Subclasses:

Num
```
public class N
extends Object
```
The namespace under which number relevant structures, functions and logics are defined

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`N.ByteRangeStep`
`static class`	`N.F`
`static class`	`N.IntRangeStep`
`static class`	`N.LongRangeStep`
`static class`	`N.Num<T extends Number>`
`static class`	`N.Op`
`static class`	`N.RangeStep<T extends Number>`
`static class`	`N.ShortRangeStep`
`static class`	`N.Type`

Field Summary

Fields
Modifier and Type	Field and Description
`static double`	`E` The `double` value that is closer than any other to e, the base of the natural logarithms.
`static double`	`PI` The `double` value that is closer than any other to pi, the ratio of the circumference of a circle to its diameter.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static double`	`abs(double a)`
`static float`	`abs(float a)`
`static int`	`abs(int a)`
`static long`	`abs(long a)`
`static double`	`cbrt(double a)`
`static double`	`ceil(double a)`
`static boolean`	`eq(Number a, Number b)`
`static double`	`exp(double a)`
`static double`	`floor(double a)`
`static boolean`	`gt(Number a, Number b)`
`static boolean`	`isNegative(BigDecimal number)` Check if a `BigDecimal` is negative
`static boolean`	`isNegative(BigInteger number)` Check if a `BigInteger` is negative
`static boolean`	`isNumeric(String s)` Check if a String `s` is numeric string
`static boolean`	`isPerfectSquare(long n)` Check if a long is a perfect square number.
`static boolean`	`isPositive(BigDecimal number)` Check if a `BigDecimal` is positive
`static boolean`	`isPositive(BigInteger number)` Check if a `BigInteger` is positive
`static double`	`log(double a)`
`static double`	`log10(double a)`
`static boolean`	`lt(Number a, Number b)`
`static double`	`max(double a, double b)`
`static float`	`max(float a, float b)`
`static int`	`max(int a, int b)`
`static long`	`max(long a, long b)`
`static double`	`min(double a, double b)`
`static float`	`min(float a, float b)`
`static int`	`min(int a, int b)`
`static long`	`min(long a, long b)`
`static N.Num`	`num(Number number)`
`static N.Num`	`num(String s)`
`static double`	`pow(double a, double b)`
`static double`	`randDouble()`
`static double`	`randDoubleWithSymbol()`
`static float`	`randFloat()`
`static float`	`randFloatWithSymbol()`
`static int`	`randInt()`
`static int`	`randInt(int max)`
`static int`	`randIntWithSymbol()`
`static int`	`randIntWithSymbol(int max)`
`static long`	`randLong()`
`static long`	`randLongWithSymbol()`
`static long`	`round(double a)`
`static double`	`round(double value, int places)`
`static int`	`round(float a)`
`static float`	`round(float value, int places)`
`static int`	`sign(Number number)`
`static double`	`sqrt(double a)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- E
```
public static final double E
```
  The double value that is closer than any other to e, the base of the natural logarithms.
  
  See Also:
  
  Constant Field Values
- PI
```
public static final double PI
```
  The double value that is closer than any other to pi, the ratio of the circumference of a circle to its diameter.
  
  See Also:
  
  Constant Field Values

Method Detail

exp
```
public static double exp(double a)
```

log
```
public static double log(double a)
```

log10
```
public static double log10(double a)
```

sqrt
```
public static double sqrt(double a)
```

cbrt
```
public static double cbrt(double a)
```

ceil
```
public static double ceil(double a)
```

floor
```
public static double floor(double a)
```

pow

public static double pow(double a,
                         double b)

round
```
public static int round(float a)
```

round

public static float round(float value,
                          int places)

round
```
public static long round(double a)
```

round

public static double round(double value,
                           int places)

isPerfectSquare
```
public static final boolean isPerfectSquare(long n)
```
Check if a long is a perfect square number. A perfect square number is an integer whose square root is also an integer

Parameters:

n - a number

Returns:

`true` if the number is perfect square number

See Also:

SO

isNumeric
```
public static boolean isNumeric(String s)
```
Check if a String `s` is numeric string

Parameters:

s - the string

Returns:

`true` if `s` is numeric or `false` otherwise

isNegative
```
public static boolean isNegative(BigDecimal number)
```
Check if a BigDecimal is negative

Parameters:

number - the number to be tested

Returns:

`true` if the number specified is negative or `false` otherwise

isNegative
```
public static boolean isNegative(BigInteger number)
```
Check if a BigInteger is negative

Parameters:

number - the number to be tested

Returns:

`true` if the number specified is negative or `false` otherwise

isPositive
```
public static boolean isPositive(BigDecimal number)
```
Check if a BigDecimal is positive

Parameters:

number - the number to be tested

Returns:

`true` if the number specified is positive or `false` otherwise

isPositive
```
public static boolean isPositive(BigInteger number)
```
Check if a BigInteger is positive

Parameters:

number - the number to be tested

Returns:

`true` if the number specified is positive or `false` otherwise

randInt
```
public static int randInt()
```
Returns:

a random int value

See Also:

Random.nextInt()

randIntWithSymbol
```
public static int randIntWithSymbol()
```

randInt
```
public static int randInt(int max)
```
Parameters:

max - the max limit (exclusive) of the number generated

Returns:

a random int value

See Also:

Random.nextInt(int)

randIntWithSymbol

public static int randIntWithSymbol(int max)

randFloat
```
public static float randFloat()
```

randFloatWithSymbol

public static float randFloatWithSymbol()

randLong
```
public static long randLong()
```

randLongWithSymbol

public static long randLongWithSymbol()

randDouble
```
public static double randDouble()
```
Returns:

a random double value

See Also:

Random.nextDouble()

randDoubleWithSymbol

public static double randDoubleWithSymbol()

abs
```
public static int abs(int a)
```

abs
```
public static long abs(long a)
```

abs
```
public static float abs(float a)
```

abs
```
public static double abs(double a)
```

max

public static int max(int a,
                      int b)

max

public static long max(long a,
                       long b)

max

public static float max(float a,
                        float b)

max

public static double max(double a,
                         double b)

min

public static int min(int a,
                      int b)

min

public static long min(long a,
                       long b)

min

public static float min(float a,
                        float b)

min

public static double min(double a,
                         double b)

sign

public static int sign(Number number)

eq

public static final boolean eq(Number a,
                               Number b)

lt

public static final boolean lt(Number a,
                               Number b)

gt

public static final boolean gt(Number a,
                               Number b)

num

public static final N.Num num(Number number)

num

public static final N.Num num(String s)

Class N

Nested Class Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

E

PI

Method Detail

exp

log

log10

sqrt

cbrt

ceil

floor

pow

round

round

round

round

isPerfectSquare

isNumeric

isNegative

isNegative

isPositive

isPositive

randInt

randIntWithSymbol

randInt

randIntWithSymbol

randFloat

randFloatWithSymbol

randLong

randLongWithSymbol

randDouble

randDoubleWithSymbol

abs

abs

abs

abs

max

max

max

max

min

min

min

min

sign

eq

lt

gt

num

num