Skip to content

Latest commit

 

History

History

JavaMath

Folders and files

NameName
Last commit message
Last commit date

parent directory

..
Readme.md
Readme.md
 
 

Readme.md

Java Math Functions

The Java Math class has many methods that allows you to perform mathematical tasks on numbers.

Method Descriptions Return Type
abs(x) Returns the absolute value of x double / float / int / long
acos(x) Returns the arccosine of x, in radians double
asin(x) Returns the arcsine of x, in radians double
atan(x) Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians double
atan2(y,x) Returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta). double
cbrt(x) Returns the cube root of x double
ceil(x) Returns the value of x rounded up to its nearest integer double
copySign(x, y) Returns the first floating point x with the sign of the second floating point y double
cos(x) Returns the cosine of x (x is in radians) double
cosh(x) Returns the hyperbolic cosine of a double value double
exp(x) Returns the value of E.pow(x) double
expm1(x) Returns e.pow(x) -1 double
floor(x) Returns the value of x rounded down to its nearest integer double
getExponent(x) Returns the unbiased exponent used in x int
hypot(x, y) Returns sqrt(x2 +y2) without intermediate overflow or underflow double
IEEEremainder(x, y) Computes the remainder operation on x and y as prescribed by the IEEE 754 standard double
log(x) Returns the natural logarithm (base E) of x double
log10(x) Returns the base 10 logarithm of x double
log1p(x) Returns the natural logarithm (base E) of the sum of x and 1 double
max(x, y) Returns the number with the highest value double / float / int / long
min(x, y) Returns the number with the lowest value double / float / int / long
nextAfter(x, y) Returns the floating point number adjacent to x in the direction of y double / float
nextUp(x) Returns the floating point value adjacent to x in the direction of positive infinity double / float
pow(x, y) Returns the value of x to the power of y double
random() Returns a random number between 0 and 1 double
round(x) Returns the value of x rounded to its nearest integer int
rint() Returns the double value that is closest to x and equal to a mathematical integer double
signum(x) Returns the sign of x double
sin(x) Returns the sine of x (x is in radians) double
sinh(x) Returns the hyperbolic sine of a double value double
sqrt(x) Returns the square root of x double
tan(x) Returns the tangent of an angle double
tanh(x) Returns the hyperbolic tangent of a double value double
toDegrees(x) Converts an angle measured in radians to an approx. equivalent angle measured in degrees double
toRadians(x) Converts an angle measured in degrees to an approx. angle measured in radians double
ulp(x) Returns the size of the unit of least precision (ulp) of x double / float

Note: All Math methods are static.

Math Class methods helps to perform the numeric operations like square, square root, cube, cube root, exponential and trigonometric operations

  • What is NaN argument? A constant holding a Not-a-Number (NaN) value of type double. It is equivalent to the value returned by Double.longBitsToDouble(0x7ff8000000000000L).

abs(), acos(), toRadians()

    // Declaring the variables
    int Vali = -1;
    float Valf = .5f;
 
    // Printing the values
        System.out.println("Initial value of int  : "+Vali);
        System.out.println("Initial value of int  : "+Valf);
 
 
    // Use of .abs() method to get the absoluteValue
    int Absi = Math.abs(Vali);
    float Absf = Math.abs(Valf);
 
        System.out.println("Absolute value of int : "+Absi);
        System.out.println("Absolute value of int : "+Absf);
        System.out.println("");
 
    // Use of acos() method
    // Value greater than 1, so passing NaN
    double Acosi = Math.acos(60);
        System.out.println("acos value of Acosi : "+Acosi);
    double x = Math.PI;
 
    // Use of toRadian() method
    x = Math.toRadians(x);
    double Acosj = Math.acos(x);
        System.out.println("acos value of Acosj : "+Acosj);

Output:

Initial value of int  : -1
Initial value of int  : 0.5
Absolute value of int : 1
Absolute value of int : 0.5

acos value of Acosi : NaN
acos value of Acosj : 1.5159376794536454

asin(), cbrt()

    int a = 1, b = 8;
    int radd = a+b;
 
    // Use of asin() method
    // Value greater than 1, so passing NaN
    double Asini = Math.asin(radd);
        System.out.println("asin value of Asini : " + Asini);
    double x = Math.PI;
 
    // Use of toRadian() method
    x = Math.toRadians(x);
    double Asinj = Math.asin(x);
        System.out.println("asin value of Asinj : " + Asinj);
        System.out.println("");
 
    // Use of cbrt() method
    double cbrtval = Math.cbrt(216);
        System.out.println("cube root : " + cbrtval);

Output:

asin value of Asini : NaN
asin value of Asinj : 0.054858647341251204

cube root : 6.0

floor(), hypot(), IEEEremainder(), log()

    // Use of floor method
    double f1 = 30.56, f2 = -56.34;
    f1 =Math.floor(f1);
        System.out.println("Floor value of f1 : "+f1);
 
    f2 =Math.floor(f2);
        System.out.println("Floor value of f2 : "+f2);
        System.out.println("");
 
    // Use of hypot() method
    double p = 12, b = -5;
    double h = Math.hypot(p, b);
        System.out.println("Hypotenuse : "+h);
        System.out.println("");
 
    // Use of IEEEremainder() method
    double d1 = 105, d2 = 2;
    double r = Math.IEEEremainder(d1,d2);
        System.out.println("Remainder : "+r);
        System.out.println("");
         
    // Use of log() method
    double l = 10;
    l = Math.log(l);
        System.out.println("Log value of 10 : "+l);

Output:

Floor value of f1 : 30.0
Floor value of f2 : -57.0

Hypotenuse : 13.0

Remainder : 1.0

Log value of 10 : 2.302585092994046

atan(), ceil(), copySign() 

    // Use of atan() method
    double Atani = Math.atan(0);
        System.out.println("atan value of Atani : "+Atani);
    double x = Math.PI/2;
 
    // Use of toRadian() method
    x = Math.toRadians(x);
    double Atanj = Math.atan(x);
        System.out.println("atan value of Atanj : "+Atanj);
        System.out.println("");
 
 
    // Use of ceil() method
    double val = 15.34 ,ceilval;
    ceilval = Math.ceil(val);
        System.out.println("ceil value of val : "+ceilval);
        System.out.println("");
 
    double dblMag = val;
    double dblSign1 = 3;
    double dblSign2 = -3;
 
 
    // Use of copySign() method
    double result1 = Math.copySign(dblMag,dblSign1);
        System.out.println("copySign1 : "+result1);
 
    double result2 = Math.copySign(dblMag,dblSign2);
        System.out.println("copySign2 : "+result2);

Output:

atan value of Atani : 0.0
atan value of Atanj : 0.0274087022410345

ceil value of val : 16.0

copySign1 : 15.34
copySign2 : -15.34