Math class « Math « Development

Math class contains the exponential, logarithm, square root, and trigonometric functions.

Constant E and PI

Type	Field	Summary
static double	E	base of the natural logarithms.
static double	PI	pi.

Get the absolute value

Return	Method	Summary
static double	abs(double a)	Returns the absolute value of a double value.
static float	abs(float a)	Returns the absolute value of a float value.
static int	abs(int a)	Returns the absolute value of an int value.
static long	abs(long a)	Returns the absolute value of a long value.

sin, cos, tan: Trigonometric functions

Return	Method	Summary
static double	acos(double a)	Returns the arc cosine of a value.
static double	asin(double a)	Returns the arc sine of a value.
static double	atan(double a)	Returns the arc tangent of a value.
static double	atan2(double y, double x)	Returns the angle theta.
static double	cos(double a)	Returns the trigonometric cosine of an angle.
static double	cosh(double x)	Returns the hyperbolic cosine of a double value.
static double	sin(double a)	Returns the trigonometric sine of an angle.
static double	sinh(double x)	Returns the hyperbolic sine of a double value.
static double	tan(double a)	Returns the trigonometric tangent of an angle.
static double	tanh(double x)	Returns the hyperbolic tangent of a double value.

Cube root and square root

Return	Method	Summary
static double	cbrt(double a)	Returns the cube root.
static double	sqrt(double a)	Returns the square root of a double value.

Ceilling and flooring value

Return	Method	Summary
static double	ceil(double a)	Returns the smallest double value that is greater than or equal to a and is equal to an integer.
static double	floor(double a)	Returns the largest double value that is less than or equal to the argument and is equal to an integer.

Copy sign

Return	Method	Summary
static double	copySign(double magnitude, double s)	Returns the first floating-point argument with the sign of s.
static float	copySign(float magnitude, float s)	Returns the first floating-point argument with the sign of s.

Raise the power

Return	Method	Summary
static double	exp(double a)	Raise to the power of a double value.
static double	expm1(double x)	Returns ex -1.
static double	pow(double a, double b)	a raised to the power b.

Get exponent

Return	Method	Summary
static int	getExponent(double d)	Returns the exponent for a double.
static int	getExponent(float f)	Returns the exponent for a float.

sqrt(x2 +y2)

Return	Method	Summary
static double	hypot(double x, double y)	Returns sqrt(x2 +y2) .

IEEE remainder

Return	Method	Summary
static double	IEEEremainder(double f1, double f2)	Computes the remainder operation on two arguments by the IEEE 754 standard.

logarithm

Return	Method	Summary
static double	log(double a)	Returns the natural logarithm (base e) of a double value.
static double	log10(double a)	Returns the base 10 logarithm of a double value.
static double	log1p(double x)	Returns the natural logarithm of the sum of the argument and 1.

Max min value

Return	Method	Summary
static double	max(double a, double b)	Returns the greater of two double values.
static float	max(float a, float b)	Returns the greater of two float values.
static int	max(int a, int b)	Returns the greater of two int values.
static long	max(long a, long b)	Returns the greater of two long values.
static double	min(double a, double b)	Returns the smaller of two double values.
static float	min(float a, float b)	Returns the smaller of two float values.
static int	min(int a, int b)	Returns the smaller of two int values.
static long	min(long a, long b)	Returns the smaller of two long values.

Next value

Return	Method	Summary
static double	nextAfter(double start, double direction)	Returns the floating-point number adjacent to the first argument in the direction of the second argument.
static float	nextAfter(float start, double direction)	Returns the floating-point number adjacent to the first argument in the direction of the second argument.
static double	nextUp(double d)	Returns the floating-point value adjacent to d in the direction of positive infinity.
static float	nextUp(float f)	Returns the floating-point value adjacent to f in the direction of positive infinity.

Random

Return	Method	Summary
static double	random()	Returns a random double value between 0.0 and 1.0.

Round to int

Return	Method	Summary
static double	rint(double a)	Returns the double value that is closest to a and is equal to an integer.

Round a value

Return	Method	Summary
static long	round(double a)	Returns the closest long to a.
static int	round(float a)	Returns the closest int to a.

value * 2^ scaleFactor

Return	Method	Summary
static double	scalb(double d, int scaleFactor)	Return d * 2<sup>scaleFactor</sup>.
static float	scalb(float f, int scaleFactor)	Return f * 2<sup>scaleFactor</sup>.

Get the sign

Return	Method	Summary
static double	signum(double d)	Returns the sign of d; zero if the argument is zero, 1.0 if the argument is greater than zero, -1.0 if the argument is less than zero.
static float	signum(float f)	Returns the signum of f; zero if the argument is zero, 1.0f if the argument is greater than zero, -1.0f if the argument is less than zero.

Degree to Radian, and Radian to Degree

Return	Method	Summary
static double	toDegrees(double angrad)	Converts an angle in radians to an angle measured in degrees.
static double	toRadians(double angdeg)	Converts an angle in degrees to an angle measured in radians.

Returns the size of an ulp of the argument

Return	Method	Summary
static double	ulp(double d)	Returns the size of an ulp of the argument.
static float	ulp(float f)	Returns the size of an ulp of the argument.