Java : StrictMath with Examples
StrictMath (Java SE 19 & JDK 19) API Examples.
You will find code examples on most StrictMath methods.
Summary
The class StrictMath contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions.
System.out.println(StrictMath.sin(0.0)); // 0.0
System.out.println(StrictMath.cos(0.0)); // 1.0
System.out.println(StrictMath.absExact(123)); // 123
System.out.println(StrictMath.absExact(-456)); // 456
System.out.println(StrictMath.ceil(1.4)); // 2.0
System.out.println(StrictMath.floor(1.6)); // 1.0
There is a Math class which is similar to the StrictMath class. The Math class permmits better-performing implementations where strict reproducibility is not required.
Fields
static final double E
The double value that is closer than any other to e, the base of the natural logarithms.
// 2.718281828459045
System.out.println(StrictMath.E);
static final double PI
The double value that is closer than any other to pi (π), the ratio of the circumference of a circle to its diameter.
// 3.141592653589793
System.out.println(StrictMath.PI);
static final double TAU
The double value that is closer than any other to tau (τ), the ratio of the circumference of a circle to its radius.
// 6.283185307179586
System.out.println(StrictMath.TAU);
Methods
static double abs (double a)
Returns the absolute value of a double value.
System.out.println(StrictMath.abs(0.0)); // 0.0
System.out.println(StrictMath.abs(1.23)); // 1.23
System.out.println(StrictMath.abs(-4.56)); // 4.56
System.out.println(StrictMath.abs(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.abs(Double.NEGATIVE_INFINITY)); // Infinity
System.out.println(StrictMath.abs(Double.NaN)); // NaN
static float abs (float a)
Returns the absolute value of a float value.
This method is equivalent except a type to abs(double a).
static int abs (int a)
Returns the absolute value of an int value.
Please see also : absExact
System.out.println(StrictMath.abs(0)); // 0
System.out.println(StrictMath.abs(123)); // 123
System.out.println(StrictMath.abs(-456)); // 456
System.out.println(StrictMath.abs(Integer.MAX_VALUE)); // 2147483647
// The method may returns a negative value.
System.out.println(StrictMath.abs(Integer.MIN_VALUE)); // -2147483648
static long abs (long a)
Returns the absolute value of a long value.
This method is equivalent except a type to abs(int a).
static int absExact (int a)
Returns the mathematical absolute value of an int value if it is exactly representable as an int, throwing ArithmeticException if the result overflows the positive int range.
System.out.println(StrictMath.absExact(0)); // 0
System.out.println(StrictMath.absExact(123)); // 123
System.out.println(StrictMath.absExact(-456)); // 456
System.out.println(StrictMath.absExact(Integer.MAX_VALUE)); // 2147483647
try {
final var value = StrictMath.absExact(Integer.MIN_VALUE);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//ArithmeticException!
static long absExact (long a)
Returns the mathematical absolute value of an long value if it is exactly representable as an long, throwing ArithmeticException if the result overflows the positive long range.
This method is equivalent except a type to absExact(int a).
static double acos (double a)
Returns the arc cosine of a value; the returned angle is in the range 0.0 through pi.
System.out.println(StrictMath.acos(-1.0)); // 3.141592653589793 ( ≒ StrictMath.PI )
System.out.println(StrictMath.acos(0.0)); // 1.5707963267948966 ( ≒ StrictMath.PI / 2 )
System.out.println(StrictMath.acos(1.0)); // 0.0
System.out.println(StrictMath.acos(Double.NaN)); // NaN
static int addExact (int x, int y)
Returns the sum of its arguments, throwing an exception if the result overflows an int.
System.out.println(StrictMath.addExact(1, 2)); // 3
System.out.println(StrictMath.addExact(1000, 3000)); // 4000
System.out.println(StrictMath.addExact(1000, -10000)); // -9000
try {
System.out.println("MAX_VALUE : " + Integer.MAX_VALUE);
final var value = StrictMath.addExact(Integer.MAX_VALUE, 1);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//MAX_VALUE : 2147483647
//ArithmeticException!
final int value = Integer.MAX_VALUE + 1;
System.out.println(value); // -2147483648
static long addExact (long x, long y)
Returns the sum of its arguments, throwing an exception if the result overflows a long.
This method is equivalent except a type to addExact(int x, int y).
static double asin (double a)
Returns the arc sine of a value; the returned angle is in the range -pi/2 through pi/2.
System.out.println(StrictMath.asin(-1.0)); // -1.5707963267948966 ( ≒ -StrictMath.PI / 2 )
System.out.println(StrictMath.asin(0.0)); // 0.0
System.out.println(StrictMath.asin(1.0)); // 1.5707963267948966 ( ≒ StrictMath.PI / 2 )
System.out.println(StrictMath.asin(Double.NaN)); // NaN
static double atan (double a)
Returns the arc tangent of a value; the returned angle is in the range -pi/2 through pi/2.
System.out.println(StrictMath.atan(Double.NEGATIVE_INFINITY)); // -1.5707963267948966 ( ≒ -StrictMath.PI / 2 )
System.out.println(StrictMath.atan(-1.0)); // -0.7853981633974483 ( ≒ -StrictMath.PI / 4 )
System.out.println(StrictMath.atan(0.0)); // 0.0
System.out.println(StrictMath.atan(1.0)); // 0.7853981633974483 ( ≒ StrictMath.PI / 4 )
System.out.println(StrictMath.atan(Double.POSITIVE_INFINITY)); // 1.5707963267948966 ( ≒ StrictMath.PI / 2 )
System.out.println(StrictMath.atan(Double.NaN)); // NaN
static double atan2 (double y, double x)
Returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta).
System.out.println(StrictMath.atan2(0.0, -1.0)); // 3.141592653589793 ( ≒ StrictMath.PI )
System.out.println(StrictMath.atan2(1.0, 0.0)); // 1.5707963267948966 ( ≒ StrictMath.PI / 2 )
System.out.println(StrictMath.atan2(0.0, 1.0)); // 0.0
System.out.println(StrictMath.atan2(-1.0, 0.0)); // -1.5707963267948966 ( ≒ -StrictMath.PI / 2 )
static double cbrt (double a)
Returns the cube root of a double value.
System.out.println(StrictMath.cbrt(0.0)); // 0.0
System.out.println(StrictMath.cbrt(1.0)); // 1.0
System.out.println(StrictMath.cbrt(8.0)); // 2.0
System.out.println(StrictMath.cbrt(-27.0)); // -3.0
System.out.println(StrictMath.cbrt(-0.0)); // -0.0
System.out.println(StrictMath.cbrt(Double.NEGATIVE_INFINITY)); // -Infinity
System.out.println(StrictMath.cbrt(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.cbrt(Double.NaN)); // NaN
static double ceil (double a)
Returns the smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer.
System.out.println(StrictMath.ceil(0.0)); // 0.0
System.out.println(StrictMath.ceil(1.2)); // 2.0
System.out.println(StrictMath.ceil(1.8)); // 2.0
System.out.println(StrictMath.ceil(-3.12)); // -3.0
System.out.println(StrictMath.ceil(-3.89)); // -3.0
System.out.println(StrictMath.ceil(-0.0)); // -0.0
System.out.println(StrictMath.ceil(Double.NEGATIVE_INFINITY)); // -Infinity
System.out.println(StrictMath.ceil(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.ceil(Double.NaN)); // NaN
static int ceilDiv (int x, int y)
Returns the smallest (closest to negative infinity) int value that is greater than or equal to the algebraic quotient.
Please see also : ceilDivExact(int x, int y)
System.out.println(StrictMath.ceilDiv(4, 3)); // 2
System.out.println(4 / 3); // 1
System.out.println(StrictMath.ceilDiv(-4, 3)); // -1
System.out.println(-4 / 3); // -1
System.out.println(StrictMath.ceilDiv(Integer.MIN_VALUE, -1) == Integer.MIN_VALUE); // true
static long ceilDiv (long x, int y)
Returns the smallest (closest to negative infinity) long value that is greater than or equal to the algebraic quotient.
This method is equivalent except a type to ceilDiv(int x, int y).
static long ceilDiv (long x, long y)
Returns the smallest (closest to negative infinity) long value that is greater than or equal to the algebraic quotient.
This method is equivalent except a type to ceilDiv(int x, int y).
static int ceilDivExact (int x, int y)
Returns the smallest (closest to negative infinity) int value that is greater than or equal to the algebraic quotient.
Please see also : ceilDiv(int x, int y)
System.out.println(StrictMath.ceilDivExact(4, 3)); // 2
System.out.println(4 / 3); // 1
System.out.println(StrictMath.ceilDivExact(-4, 3)); // -1
System.out.println(-4 / 3); // -1
try {
final var value = StrictMath.ceilDivExact(Integer.MIN_VALUE, -1);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//ArithmeticException!
static long ceilDivExact (long x, long y)
Returns the smallest (closest to negative infinity) long value that is greater than or equal to the algebraic quotient.
This method is equivalent except a type to ceilDivExact(int x, int y).
static int ceilMod (int x, int y)
Returns the ceiling modulus of the int arguments.
System.out.println(StrictMath.ceilMod(4, 3)); // -2
System.out.println(4 % 3); // 1
System.out.println(StrictMath.ceilMod(-4, 3)); // -1
System.out.println(-4 % 3); // -1
System.out.println(StrictMath.ceilMod(4, -3)); // 1
System.out.println(4 % -3); // 1
System.out.println(StrictMath.ceilMod(-4, -3)); // 2
System.out.println(-4 % -3); // -1
static int ceilMod (long x, int y)
Returns the ceiling modulus of the long and int arguments.
This method is equivalent except a type to ceilMod(int x, int y).
static long ceilMod (long x, long y)
Returns the ceiling modulus of the long arguments.
This method is equivalent except a type to ceilMod(int x, int y).
static double copySign (double magnitude, double sign)
Returns the first floating-point argument with the sign of the second floating-point argument.
System.out.println(StrictMath.copySign(1.23, 4.56)); // 1.23
System.out.println(StrictMath.copySign(1.23, -4.56)); // -1.23
System.out.println(StrictMath.copySign(-7.89, 1.23)); // 7.89
System.out.println(StrictMath.copySign(-7.89, -1.23)); // -7.89
System.out.println(StrictMath.copySign(0.0, 0.0)); // 0.0
System.out.println(StrictMath.copySign(0.0, -0.0)); // -0.0
System.out.println(StrictMath.copySign(1.0, Double.NEGATIVE_INFINITY)); // -1.0
System.out.println(StrictMath.copySign(1.0, Double.POSITIVE_INFINITY)); // 1.0
System.out.println(StrictMath.copySign(1.0, Double.NaN)); // 1.0
static float copySign (float magnitude, float sign)
Returns the first floating-point argument with the sign of the second floating-point argument.
This method is equivalent except a type to copySign(double magnitude, double sign).
static double cos (double a)
Returns the trigonometric cosine of an angle.
System.out.println(StrictMath.cos(-StrictMath.PI)); // -1.0
System.out.println(StrictMath.cos(-StrictMath.PI * 0.75)); // -0.7071067811865475
System.out.println(StrictMath.cos(-StrictMath.PI * 0.5)); // 6.123233995736766E-17 (≒ 0.0)
System.out.println(StrictMath.cos(-StrictMath.PI * 0.25)); // 0.7071067811865476
System.out.println(StrictMath.cos(0.0)); // 1.0
System.out.println(StrictMath.cos(StrictMath.PI * 0.25)); // 0.7071067811865476
System.out.println(StrictMath.cos(StrictMath.PI * 0.5)); // 6.123233995736766E-17 (≒ 0.0)
System.out.println(StrictMath.cos(StrictMath.PI * 0.75)); // -0.7071067811865475
System.out.println(StrictMath.cos(StrictMath.PI)); // -1.0
System.out.println(StrictMath.cos(Double.NEGATIVE_INFINITY)); // NaN
System.out.println(StrictMath.cos(Double.POSITIVE_INFINITY)); // NaN
System.out.println(StrictMath.cos(Double.NaN)); // NaN
static double cosh (double x)
Returns the hyperbolic cosine of a double value.
System.out.println(StrictMath.cosh(-1.0)); // 1.543080634815244
System.out.println(StrictMath.cosh(-0.5)); // 1.1276259652063807
System.out.println(StrictMath.cosh(0.0)); // 1.0
System.out.println(StrictMath.cosh(0.5)); // 1.543080634815244
System.out.println(StrictMath.cosh(1.0)); // -1.0
System.out.println(StrictMath.cosh(Double.NEGATIVE_INFINITY)); // Infinity
System.out.println(StrictMath.cosh(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.cosh(Double.NaN)); // NaN
static int decrementExact (int a)
Returns the argument decremented by one, throwing an exception if the result overflows an int.
System.out.println(StrictMath.decrementExact(Integer.MAX_VALUE)); // 2147483646
System.out.println(StrictMath.decrementExact(100)); // 99
System.out.println(StrictMath.decrementExact(1)); // 0
System.out.println(StrictMath.decrementExact(0)); // -1
System.out.println(StrictMath.decrementExact(-100)); // -101
try {
System.out.println("MIN_VALUE : " + Integer.MIN_VALUE);
final int value = StrictMath.decrementExact(Integer.MIN_VALUE);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//MIN_VALUE : -2147483648
//ArithmeticException!
final int value = Integer.MIN_VALUE - 1;
System.out.println(value); // 2147483647
static long decrementExact (long a)
Returns the argument decremented by one, throwing an exception if the result overflows a long.
This method is equivalent except a type to decrementExact(int a).
static int divideExact (int x, int y)
Returns the quotient of the arguments, throwing an exception if the result overflows an int.
System.out.println(StrictMath.divideExact(100, 2)); // 50
System.out.println(StrictMath.divideExact(10, 3)); // 3
System.out.println(StrictMath.divideExact(-500, 10)); // -50
System.out.println(StrictMath.divideExact(-1000, -500)); // 2
try {
System.out.println("MIN_VALUE : " + Integer.MIN_VALUE);
final int value = StrictMath.divideExact(Integer.MIN_VALUE, -1);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//MIN_VALUE : -2147483648
//ArithmeticException!
static long divideExact (long x, long y)
Returns the quotient of the arguments, throwing an exception if the result overflows a long.
This method is equivalent except a type to divideExact(int x, int y).
static double exp (double a)
Returns Euler's number e raised to the power of a double value.
System.out.println(StrictMath.exp(-2.0)); // 0.1353352832366127
System.out.println(StrictMath.exp(-1.0)); // 0.36787944117144233
System.out.println(StrictMath.exp(0.0)); // 1.0
System.out.println(StrictMath.exp(1.0)); // 2.7182818284590455
System.out.println(StrictMath.exp(2.0)); // 7.38905609893065
System.out.println(StrictMath.exp(Double.NEGATIVE_INFINITY)); // 0.0
System.out.println(StrictMath.exp(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.exp(Double.NaN)); // NaN
static double expm1 (double x)
Returns ex -1.
System.out.println(StrictMath.expm1(-2.0)); // -0.8646647167633873
System.out.println(StrictMath.expm1(-1.0)); // -0.6321205588285577
System.out.println(StrictMath.expm1(0.0)); // 0.0
System.out.println(StrictMath.expm1(1.0)); // 1.718281828459045
System.out.println(StrictMath.expm1(2.0)); // 6.38905609893065
System.out.println(StrictMath.expm1(Double.NEGATIVE_INFINITY)); // -1.0
System.out.println(StrictMath.expm1(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.expm1(Double.NaN)); // NaN
static double floor (double a)
Returns the largest (closest to positive infinity) double value that is less than or equal to the argument and is equal to a mathematical integer.
System.out.println(StrictMath.floor(1.2)); // 1.0
System.out.println(StrictMath.floor(1.8)); // 1.0
System.out.println(StrictMath.floor(2.3)); // 2.0
System.out.println(StrictMath.floor(2.9)); // 2.0
System.out.println(StrictMath.floor(-3.12)); // -4.0
System.out.println(StrictMath.floor(-3.89)); // -4.0
System.out.println(StrictMath.floor(0.0)); // 0.0
System.out.println(StrictMath.floor(-0.0)); // -0.0
System.out.println(StrictMath.floor(Double.NEGATIVE_INFINITY)); // -Infinity
System.out.println(StrictMath.floor(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.floor(Double.NaN)); // NaN
static int floorDiv (int x, int y)
Returns the largest (closest to positive infinity) int value that is less than or equal to the algebraic quotient.
Please see also : floorDivExact(int x, int y)
System.out.println(StrictMath.floorDiv(10, 1)); // 10
System.out.println(StrictMath.floorDiv(10, 2)); // 5
System.out.println(StrictMath.floorDiv(10, 3)); // 3
System.out.println(StrictMath.floorDiv(10, 4)); // 2
System.out.println(StrictMath.floorDiv(10, 5)); // 2
System.out.println(StrictMath.floorDiv(10, 6)); // 1
System.out.println(StrictMath.floorDiv(10, 10)); // 1
System.out.println(StrictMath.floorDiv(10, 11)); // 0
System.out.println(StrictMath.floorDiv(10, -1)); // -10
System.out.println(StrictMath.floorDiv(10, -2)); // -5
System.out.println(StrictMath.floorDiv(10, -3)); // -4
System.out.println(StrictMath.floorDiv(10, -4)); // -3
System.out.println(StrictMath.floorDiv(10, -5)); // -2
System.out.println(StrictMath.floorDiv(10, -6)); // -2
System.out.println(StrictMath.floorDiv(10, -10)); // -1
System.out.println(StrictMath.floorDiv(10, -11)); // -1
System.out.println(Integer.MIN_VALUE); // -2147483648
System.out.println(StrictMath.floorDiv(Integer.MIN_VALUE, -1)); // -2147483648
static long floorDiv (long x, int y)
Returns the largest (closest to positive infinity) long value that is less than or equal to the algebraic quotient.
This method is equivalent except a type to floorDiv(int x, int y).
static long floorDiv (long x, long y)
Returns the largest (closest to positive infinity) long value that is less than or equal to the algebraic quotient.
This method is equivalent except a type to floorDiv(int x, int y).
static int floorDivExact (int x, int y)
Returns the largest (closest to positive infinity) int value that is less than or equal to the algebraic quotient.
Please see also : floorDiv(int x, int y)
System.out.println(StrictMath.floorDivExact(10, 1)); // 10
System.out.println(StrictMath.floorDivExact(10, 2)); // 5
System.out.println(StrictMath.floorDivExact(10, 3)); // 3
System.out.println(StrictMath.floorDivExact(10, -1)); // -10
System.out.println(StrictMath.floorDivExact(10, -2)); // -5
System.out.println(StrictMath.floorDivExact(10, -3)); // -4
try {
System.out.println("MIN_VALUE : " + Integer.MIN_VALUE);
final var value = StrictMath.floorDivExact(Integer.MIN_VALUE, -1);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//MIN_VALUE : -2147483648
//ArithmeticException!
static long floorDivExact (long x, long y)
Returns the largest (closest to positive infinity) long value that is less than or equal to the algebraic quotient.
This method is equivalent except a type to floorDivExact(int x, int y).
static int floorMod (int x, int y)
Returns the floor modulus of the int arguments.
System.out.println(StrictMath.floorMod(10, 1)); // 0
System.out.println(StrictMath.floorMod(10, 2)); // 0
System.out.println(StrictMath.floorMod(10, 3)); // 1
System.out.println(StrictMath.floorMod(10, 4)); // 2
System.out.println(StrictMath.floorMod(10, 5)); // 0
System.out.println(StrictMath.floorMod(10, 6)); // 4
System.out.println(StrictMath.floorMod(10, 7)); // 3
System.out.println(StrictMath.floorMod(10, 10)); // 0
System.out.println(StrictMath.floorMod(10, 11)); // 10
System.out.println(StrictMath.floorMod(10, -1)); // 0
System.out.println(StrictMath.floorMod(10, -2)); // 0
System.out.println(StrictMath.floorMod(10, -3)); // -2
System.out.println(StrictMath.floorMod(10, -4)); // -2
System.out.println(StrictMath.floorMod(10, -5)); // 0
System.out.println(StrictMath.floorMod(10, -6)); // -2
System.out.println(StrictMath.floorMod(10, -7)); // -4
System.out.println(StrictMath.floorMod(10, -10)); // 0
System.out.println(StrictMath.floorMod(10, -11)); // -1
System.out.println(StrictMath.floorMod(-10, 1)); // 0
System.out.println(StrictMath.floorMod(-10, 2)); // 0
System.out.println(StrictMath.floorMod(-10, 3)); // 2
System.out.println(StrictMath.floorMod(-10, 4)); // 2
System.out.println(StrictMath.floorMod(-10, 5)); // 0
System.out.println(StrictMath.floorMod(-10, 6)); // 2
System.out.println(StrictMath.floorMod(-10, 7)); // 4
System.out.println(StrictMath.floorMod(-10, 10)); // 0
System.out.println(StrictMath.floorMod(-10, 11)); // 1
static int floorMod (long x, int y)
Returns the floor modulus of the long and int arguments.
This method is equivalent except a type to floorMod(int x, int y).
static long floorMod (long x, long y)
Returns the floor modulus of the long arguments.
This method is equivalent except a type to floorMod(int x, int y).
static double fma (double a, double b, double c)
Returns the fused multiply add of the three arguments; that is, returns the exact product of the first two arguments summed with the third argument and then rounded once to the nearest double.
final double a = 0.6;
final double b = 3.0;
final double c = 0.9;
System.out.println(StrictMath.fma(a, b, c)); // 2.7
System.out.println(a * b + c); // 2.6999999999999997
System.out.println(StrictMath.fma(Double.NaN, 1.0, 2.0)); // NaN
System.out.println(StrictMath.fma(Double.POSITIVE_INFINITY, 0.0, 2.0)); // NaN
System.out.println(StrictMath.fma(Double.POSITIVE_INFINITY, 1.0, Double.NEGATIVE_INFINITY)); // NaN
static float fma (float a, float b, float c)
Returns the fused multiply add of the three arguments; that is, returns the exact product of the first two arguments summed with the third argument and then rounded once to the nearest float.
This method is equivalent except a type to fma(double a, double b, double c).
static int getExponent (double d)
Returns the unbiased exponent used in the representation of a double.
final double value1 = 0x1.0p1;
System.out.println(value1); // 2.0
System.out.println(StrictMath.getExponent(value1)); // 1
final double value2 = 0x1.0p2;
System.out.println(value2); // 4.0
System.out.println(StrictMath.getExponent(value2)); // 2
final double value3 = 0x1.0p3;
System.out.println(value3); // 8.0
System.out.println(StrictMath.getExponent(value3)); // 3
System.out.println(Double.MAX_EXPONENT); // 1023
System.out.println(StrictMath.getExponent(Double.NaN)); // 1024
System.out.println(StrictMath.getExponent(Double.POSITIVE_INFINITY)); // 1024
System.out.println(StrictMath.getExponent(Double.NEGATIVE_INFINITY)); // 1024
System.out.println(Double.MIN_EXPONENT); // -1022
System.out.println(StrictMath.getExponent(0.0)); // -1023
static int getExponent (float f)
Returns the unbiased exponent used in the representation of a float.
This method is equivalent except a type to getExponent(double d).
static double hypot (double x, double y)
Returns sqrt(x2 +y2) without intermediate overflow or underflow.
System.out.println(StrictMath.hypot(1.0, 0.0)); // 1.0
System.out.println(StrictMath.hypot(3.0, 4.0)); // 5.0
final double x = Double.MAX_VALUE;
final double y = Double.MIN_VALUE;
System.out.println(StrictMath.hypot(x, y)); // 1.7976931348623157E308
System.out.println(StrictMath.sqrt((x * x) + (y * y))); // Infinity
System.out.println(StrictMath.hypot(Double.NEGATIVE_INFINITY, 1.0)); // Infinity
System.out.println(StrictMath.hypot(Double.POSITIVE_INFINITY, 1.0)); // Infinity
System.out.println(StrictMath.hypot(Double.NaN, 1.0)); // NaN
static double IEEEremainder (double f1, double f2)
Computes the remainder operation on two arguments as prescribed by the IEEE 754 standard.
System.out.println(StrictMath.IEEEremainder(10.0, 1.0)); // 0.0
System.out.println(StrictMath.IEEEremainder(10.0, 2.0)); // 0.0
System.out.println(StrictMath.IEEEremainder(10.0, 3.0)); // 1.0
System.out.println(StrictMath.IEEEremainder(10.0, 4.0)); // 2.0
System.out.println(StrictMath.IEEEremainder(10.0, 5.0)); // 0.0
System.out.println(StrictMath.IEEEremainder(10.0, 6.0)); // -2.0
System.out.println(StrictMath.IEEEremainder(10.0, 7.0)); // 3.0
System.out.println(StrictMath.IEEEremainder(10.0, 8.0)); // 2.0
System.out.println(StrictMath.IEEEremainder(10.0, 9.0)); // 1.0
System.out.println(StrictMath.IEEEremainder(10.0, 10.0)); // 0.0
System.out.println(StrictMath.IEEEremainder(10.0, 11.0)); // -1.0
System.out.println(10.0 % 1.0); // 0.0
System.out.println(10.0 % 2.0); // 0.0
System.out.println(10.0 % 3.0); // 1.0
System.out.println(10.0 % 4.0); // 2.0
System.out.println(10.0 % 5.0); // 0.0
System.out.println(10.0 % 6.0); // 4.0
System.out.println(10.0 % 7.0); // 3.0
System.out.println(10.0 % 8.0); // 2.0
System.out.println(10.0 % 9.0); // 1.0
System.out.println(10.0 % 10.0); // 0.0
System.out.println(10.0 % 11.0); // 10.0
System.out.println(StrictMath.IEEEremainder(10.0, 0.0)); // NaN
System.out.println(StrictMath.IEEEremainder(Double.POSITIVE_INFINITY, 1.0)); // NaN
System.out.println(StrictMath.IEEEremainder(Double.NEGATIVE_INFINITY, 1.0)); // NaN
System.out.println(StrictMath.IEEEremainder(Double.NaN, 1.0)); // NaN
System.out.println(StrictMath.IEEEremainder(2.0, Double.POSITIVE_INFINITY)); // 2.0
System.out.println(StrictMath.IEEEremainder(2.0, Double.NEGATIVE_INFINITY)); // 2.0
static int incrementExact (int a)
Returns the argument incremented by one, throwing an exception if the result overflows an int.
System.out.println(StrictMath.incrementExact(0)); // 1
System.out.println(StrictMath.incrementExact(1)); // 2
System.out.println(StrictMath.incrementExact(1000)); // 1001
System.out.println(StrictMath.incrementExact(-1000)); // -999
try {
System.out.println("MAX_VALUE : " + Integer.MAX_VALUE);
final var value = StrictMath.incrementExact(Integer.MAX_VALUE);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//MAX_VALUE : 2147483647
//ArithmeticException!
final int value = Integer.MAX_VALUE + 1;
System.out.println(value); // -2147483648
static long incrementExact (long a)
Returns the argument incremented by one, throwing an exception if the result overflows a long.
This method is equivalent except a type to incrementExact(int a).
static double log (double a)
Returns the natural logarithm (base e) of a double value.
System.out.println(StrictMath.log(0.1)); // -2.3025850929940455
System.out.println(StrictMath.log(0.2)); // -1.6094379124341003
System.out.println(StrictMath.log(0.3)); // -1.2039728043259361
System.out.println(StrictMath.log(0.4)); // -0.916290731874155
System.out.println(StrictMath.log(0.5)); // -0.6931471805599453
System.out.println(StrictMath.log(1.0)); // 0.0
System.out.println(StrictMath.log(2.0)); // 0.6931471805599453
System.out.println(StrictMath.log(3.0)); // 1.0986122886681096
System.out.println(StrictMath.log(4.0)); // 1.3862943611198906
System.out.println(StrictMath.log(5.0)); // 1.6094379124341003
System.out.println(StrictMath.log(-1.0)); // NaN
System.out.println(StrictMath.log(Double.NEGATIVE_INFINITY)); // NaN
System.out.println(StrictMath.log(Double.NaN)); // NaN
System.out.println(StrictMath.log(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.log(0.0)); // -Infinity
static double log10 (double a)
Returns the base 10 logarithm of a double value.
System.out.println(StrictMath.log10(0.1)); // -1.0
System.out.println(StrictMath.log10(0.2)); // -0.6989700043360187
System.out.println(StrictMath.log10(0.3)); // -0.5228787452803376
System.out.println(StrictMath.log10(0.4)); // -0.3979400086720376
System.out.println(StrictMath.log10(0.5)); // -0.3010299956639812
System.out.println(StrictMath.log10(1.0)); // 0.0
System.out.println(StrictMath.log10(2.0)); // 0.3010299956639812
System.out.println(StrictMath.log10(3.0)); // 0.47712125471966244
System.out.println(StrictMath.log10(4.0)); // 0.6020599913279624
System.out.println(StrictMath.log10(5.0)); // 0.6989700043360189
System.out.println(StrictMath.log10(10.0)); // 1.0
System.out.println(StrictMath.log10(100.0)); // 2.0
System.out.println(StrictMath.log10(1000.0)); // 3.0
System.out.println(StrictMath.log10(-1.0)); // NaN
System.out.println(StrictMath.log10(Double.NEGATIVE_INFINITY)); // NaN
System.out.println(StrictMath.log10(Double.NaN)); // NaN
System.out.println(StrictMath.log10(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.log10(0.0)); // -Infinity
static double log1p (double x)
Returns the natural logarithm of the sum of the argument and 1.
System.out.println(StrictMath.log1p(-0.9)); // -2.302585092994046
System.out.println(StrictMath.log1p(-0.8)); // -1.6094379124341005
System.out.println(StrictMath.log1p(-0.7)); // -1.203972804325936
System.out.println(StrictMath.log1p(-0.6)); // -0.916290731874155
System.out.println(StrictMath.log1p(-0.5)); // -0.6931471805599453
System.out.println(StrictMath.log1p(0.0)); // 0.0
System.out.println(StrictMath.log1p(1.0)); // 0.6931471805599453
System.out.println(StrictMath.log1p(2.0)); // 1.0986122886681096
System.out.println(StrictMath.log1p(3.0)); // 1.3862943611198906
System.out.println(StrictMath.log1p(4.0)); // 1.6094379124341003
System.out.println(StrictMath.log1p(-2.0)); // NaN
System.out.println(StrictMath.log1p(Double.NEGATIVE_INFINITY)); // NaN
System.out.println(StrictMath.log1p(Double.NaN)); // NaN
System.out.println(StrictMath.log1p(Double.POSITIVE_INFINITY)); // Infinity
static double max (double a, double b)
Returns the greater of two double values.
System.out.println(StrictMath.max(1.0, 2.0)); // 2.0
System.out.println(StrictMath.max(2.0, 1.0)); // 2.0
System.out.println(StrictMath.max(5.0, 5.0)); // 5.0
System.out.println(StrictMath.max(+0.0, -0.0)); // 0.0
System.out.println(StrictMath.max(Double.MAX_VALUE, Double.MIN_VALUE)); // 1.7976931348623157E308
System.out.println(StrictMath.max(999.0, Double.NEGATIVE_INFINITY)); // 999.0
System.out.println(StrictMath.max(999.0, Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.max(999.0, Double.NaN)); // NaN
static float max (float a, float b)
Returns the greater of two float values.
This method is equivalent except a type to max(double a, double b).
static int max (int a, int b)
Returns the greater of two int values.
System.out.println(StrictMath.max(1, 2)); // 2
System.out.println(StrictMath.max(2, 1)); // 2
System.out.println(StrictMath.max(5, 5)); // 5
System.out.println(StrictMath.max(+0, -0)); // 0
System.out.println(StrictMath.max(Integer.MAX_VALUE, Integer.MIN_VALUE)); // 2147483647
static long max (long a, long b)
Returns the greater of two long values.
This method is equivalent except a type to max(int a, int b).
static double min (double a, double b)
Returns the smaller of two double values.
System.out.println(StrictMath.min(1.0, 2.0)); // 1.0
System.out.println(StrictMath.min(2.0, 1.0)); // 1.0
System.out.println(StrictMath.min(5.0, 5.0)); // 5.0
System.out.println(StrictMath.min(+0.0, -0.0)); // -0.0
System.out.println(StrictMath.min(Double.MAX_VALUE, Double.MIN_VALUE)); // 4.9E-324
System.out.println(StrictMath.min(999.0, Double.NEGATIVE_INFINITY)); // -Infinity
System.out.println(StrictMath.min(999.0, Double.POSITIVE_INFINITY)); // 999.0
System.out.println(StrictMath.min(999.0, Double.NaN)); // NaN
static float min (float a, float b)
Returns the smaller of two float values.
This method is equivalent except a type to min(double a, double b).
static int min (int a, int b)
Returns the smaller of two int values.
System.out.println(StrictMath.min(1, 2)); // 1
System.out.println(StrictMath.min(2, 1)); // 1
System.out.println(StrictMath.min(5, 5)); // 5
System.out.println(StrictMath.min(+0, -0)); // 0
System.out.println(StrictMath.min(Integer.MAX_VALUE, Integer.MIN_VALUE)); // -2147483648
static long min (long a, long b)
Returns the smaller of two long values.
This method is equivalent except a type to min(int a, int b).
static int multiplyExact (int x, int y)
Returns the product of the arguments, throwing an exception if the result overflows an int.
System.out.println(StrictMath.multiplyExact(0, 100)); // 0
System.out.println(StrictMath.multiplyExact(1, 300)); // 300
System.out.println(StrictMath.multiplyExact(5000, 100)); // 500000
System.out.println(StrictMath.multiplyExact(5000, -100)); // -500000
try {
final var value = StrictMath.multiplyExact(1000000, 1000000);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//ArithmeticException!
final int value = 1000000 * 1000000;
System.out.println(value); // -727379968
static long multiplyExact (long x, int y)
Returns the product of the arguments, throwing an exception if the result overflows a long.
This method is equivalent except a type to multiplyExact(int x, int y).
static long multiplyExact (long x, long y)
Returns the product of the arguments, throwing an exception if the result overflows a long.
This method is equivalent except a type to multiplyExact(int x, int y).
static long multiplyFull (int x, int y)
Returns the exact mathematical product of the arguments.
System.out.println(StrictMath.multiplyFull(0, 100)); // 0
System.out.println(StrictMath.multiplyFull(1, 300)); // 300
System.out.println(StrictMath.multiplyFull(5000, 100)); // 500000
System.out.println(StrictMath.multiplyFull(5000, -100)); // -500000
System.out.println(StrictMath.multiplyFull(1000000, 1000000)); // 1000000000000
// 4611686014132420609
System.out.println(StrictMath.multiplyFull(Integer.MAX_VALUE, Integer.MAX_VALUE));
// 4611686018427387904
System.out.println(StrictMath.multiplyFull(Integer.MIN_VALUE, Integer.MIN_VALUE));
static long multiplyHigh (long x, long y)
Returns as a long the most significant 64 bits of the 128-bit product of two 64-bit factors.
Please see also : unsignedMultiplyHigh(long x, long y)
final var x = 0x1234567890abcdefL;
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x0L)); // 0x0
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x1L)); // 0x0
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x10L)); // 0x1
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x100L)); // 0x12
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x1000L)); // 0x123
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x10000L)); // 0x1234
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x100000L)); // 0x12345
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x1000000L)); // 0x123456
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x10000000L)); // 0x1234567
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x100000000L)); // 0x12345678
static int negateExact (int a)
Returns the negation of the argument, throwing an exception if the result overflows an int.
System.out.println(StrictMath.negateExact(Integer.MAX_VALUE)); // -2147483647
System.out.println(StrictMath.negateExact(100)); // -100
System.out.println(StrictMath.negateExact(1)); // -1
System.out.println(StrictMath.negateExact(0)); // 0
System.out.println(StrictMath.negateExact(-100)); // 100
try {
final int value = StrictMath.negateExact(Integer.MIN_VALUE);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException! : " + e.getMessage());
}
// Result
// ↓
//ArithmeticException! : integer overflow
static long negateExact (long a)
Returns the negation of the argument, throwing an exception if the result overflows a long.
This method is equivalent except a type to negateExact(int a).
static double nextAfter (double start, double direction)
Returns the floating-point number adjacent to the first argument in the direction of the second argument.
System.out.println(StrictMath.nextAfter(1.0, 2.0)); // 1.0000000000000002
System.out.println(StrictMath.nextAfter(1.0000000000000001, 2.0)); // 1.0000000000000002
System.out.println(StrictMath.nextAfter(1.0000000000000002, 2.0)); // 1.0000000000000004
System.out.println(StrictMath.nextAfter(1.0000000000000003, 2.0)); // 1.0000000000000004
System.out.println(StrictMath.nextAfter(1.0, -2.0)); // 0.9999999999999999
System.out.println(StrictMath.nextAfter(0.9999999999999999, -2.0)); // 0.9999999999999998
System.out.println(StrictMath.nextAfter(0.9999999999999998, -2.0)); // 0.9999999999999997
System.out.println(StrictMath.nextAfter(1.0, 1.0)); // 1.0
System.out.println(StrictMath.nextAfter(1.0, Double.NaN)); // NaN
System.out.println(StrictMath.nextAfter(Double.MIN_VALUE, -1.0)); // 0.0
// 1.7976931348623157E308 ( = Double.MAX_VALUE)
System.out.println(StrictMath.nextAfter(Double.POSITIVE_INFINITY, -1.0));
static float nextAfter (float start, double direction)
Returns the floating-point number adjacent to the first argument in the direction of the second argument.
This method is equivalent except a type to nextAfter(double start, double direction).
static double nextDown (double d)
Returns the floating-point value adjacent to d in the direction of negative infinity.
System.out.println(StrictMath.nextDown(1.0)); // 0.9999999999999999
System.out.println(StrictMath.nextDown(0.9999999999999999)); // 0.9999999999999998
System.out.println(StrictMath.nextDown(0.9999999999999998)); // 0.9999999999999997
System.out.println(StrictMath.nextDown(Double.NaN)); // NaN
System.out.println(StrictMath.nextDown(Double.NEGATIVE_INFINITY)); // -Infinity
System.out.println(StrictMath.nextDown(0.0)); // -4.9E-324 ( = -Double.MIN_VALUE )
static float nextDown (float f)
Returns the floating-point value adjacent to f in the direction of negative infinity.
This method is equivalent except a type to nextDown(double d).
static double nextUp (double d)
Returns the floating-point value adjacent to d in the direction of positive infinity.
System.out.println(StrictMath.nextUp(1.0)); // 1.0000000000000002
System.out.println(StrictMath.nextUp(1.0000000000000001)); // 1.0000000000000002
System.out.println(StrictMath.nextUp(1.0000000000000002)); // 1.0000000000000004
System.out.println(StrictMath.nextUp(1.0000000000000003)); // 1.0000000000000004
System.out.println(StrictMath.nextUp(Double.NaN)); // NaN
System.out.println(StrictMath.nextUp(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.nextUp(0.0)); // 4.9E-324 ( = Double.MIN_VALUE )
static float nextUp (float f)
Returns the floating-point value adjacent to f in the direction of positive infinity.
This method is equivalent except a type to nextUp(double d).
static double pow (double a, double b)
Returns the value of the first argument raised to the power of the second argument.
System.out.println(StrictMath.pow(2.0, 0.0)); // 1.0
System.out.println(StrictMath.pow(2.0, 1.0)); // 2.0
System.out.println(StrictMath.pow(2.0, 2.0)); // 4.0
System.out.println(StrictMath.pow(2.0, 3.0)); // 8.0
System.out.println(StrictMath.pow(2.0, 4.0)); // 16.0
System.out.println(StrictMath.pow(2.0, -1.0)); // 0.5
System.out.println(StrictMath.pow(2.0, -2.0)); // 0.25
System.out.println(StrictMath.pow(2.0, -3.0)); // 0.125
System.out.println(StrictMath.pow(2.0, -4.0)); // 0.0625
System.out.println(StrictMath.pow(2.0, Double.NaN)); // NaN
System.out.println(StrictMath.pow(Double.NaN, 2.0)); // NaN
System.out.println(StrictMath.pow(2.0, Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.pow(0.5, Double.NEGATIVE_INFINITY)); // Infinity
System.out.println(StrictMath.pow(2.0, Double.NEGATIVE_INFINITY)); // 0.0
System.out.println(StrictMath.pow(0.5, Double.POSITIVE_INFINITY)); // 0.0
System.out.println(StrictMath.pow(0.0, 2.0)); // 0.0
System.out.println(StrictMath.pow(Double.POSITIVE_INFINITY, -2.0)); // 0.0
System.out.println(StrictMath.pow(0.0, -2.0)); // Infinity
System.out.println(StrictMath.pow(Double.POSITIVE_INFINITY, 2.0)); // Infinity
static double random ()
Returns a double value with a positive sign, greater than or equal to 0.0 and less than 1.0.
Please see also : Random , RandomGenerator
System.out.println(StrictMath.random()); // 0.2637632679380906
System.out.println(StrictMath.random()); // 0.43028303277317403
System.out.println(StrictMath.random()); // 0.5014048102036631
System.out.println(StrictMath.random()); // 0.8983305345177616
System.out.println(StrictMath.random()); // 0.05255565620878788
static double rint (double a)
Returns the double value that is closest in value to the argument and is equal to a mathematical integer.
System.out.println(StrictMath.rint(0.0)); // 0.0
System.out.println(StrictMath.rint(0.1)); // 0.0
System.out.println(StrictMath.rint(0.2)); // 0.0
System.out.println(StrictMath.rint(0.4)); // 0.0
System.out.println(StrictMath.rint(0.5)); // 0.0
System.out.println(StrictMath.rint(0.51)); // 1.0
System.out.println(StrictMath.rint(0.6)); // 1.0
System.out.println(StrictMath.rint(0.9)); // 1.0
System.out.println(StrictMath.rint(1.1)); // 1.0
System.out.println(StrictMath.rint(1.2)); // 1.0
System.out.println(StrictMath.rint(1.4)); // 1.0
System.out.println(StrictMath.rint(1.5)); // 2.0
System.out.println(StrictMath.rint(1.6)); // 2.0
System.out.println(StrictMath.rint(-99.4)); // -99.0
System.out.println(StrictMath.rint(-99.5)); // -100.0
System.out.println(StrictMath.rint(-99.6)); // -100.0
System.out.println(StrictMath.rint(Double.NaN)); // NaN
System.out.println(StrictMath.rint(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.rint(Double.NEGATIVE_INFINITY)); // -Infinity
static long round (double a)
Returns the closest long to the argument, with ties rounding to positive infinity.
System.out.println(StrictMath.round(0.0)); // 0
System.out.println(StrictMath.round(0.1)); // 0
System.out.println(StrictMath.round(0.2)); // 0
System.out.println(StrictMath.round(0.4)); // 0
System.out.println(StrictMath.round(0.5)); // 1
System.out.println(StrictMath.round(0.6)); // 1
System.out.println(StrictMath.round(0.9)); // 1
System.out.println(StrictMath.round(1.1)); // 1
System.out.println(StrictMath.round(1.2)); // 1
System.out.println(StrictMath.round(1.4)); // 1
System.out.println(StrictMath.round(1.5)); // 2
System.out.println(StrictMath.round(1.6)); // 2
System.out.println(StrictMath.round(-99.4)); // -99
System.out.println(StrictMath.round(-99.5)); // -99
System.out.println(StrictMath.round(-99.6)); // -100
System.out.println(StrictMath.round(Double.NaN)); // NaN
// 9223372036854775807 ( = Long.MAX_VALUE )
System.out.println(StrictMath.round(Double.POSITIVE_INFINITY));
// -9223372036854775808 ( = Long.MIN_VALUE )
System.out.println(StrictMath.round(Double.NEGATIVE_INFINITY));
static int round (float a)
Returns the closest int to the argument, with ties rounding to positive infinity.
This method is equivalent except a type to round(double a).
static double scalb (double d, int scaleFactor)
Returns d × 2scaleFactor rounded as if performed by a single correctly rounded floating-point multiply.
System.out.println(StrictMath.scalb(2.0, 0)); // 2.0
System.out.println(StrictMath.scalb(2.0, 1)); // 4.0
System.out.println(StrictMath.scalb(2.0, 2)); // 8.0
System.out.println(StrictMath.scalb(2.0, 3)); // 16.0
System.out.println(StrictMath.scalb(2.0, 4)); // 32.0
System.out.println(StrictMath.scalb(2.0, -1)); // 1.0
System.out.println(StrictMath.scalb(2.0, -2)); // 0.5
System.out.println(StrictMath.scalb(2.0, -3)); // 0.25
System.out.println(StrictMath.scalb(2.0, -4)); // 0.125
System.out.println(StrictMath.scalb(Double.NaN, 1)); // NaN
System.out.println(StrictMath.scalb(Double.POSITIVE_INFINITY, 1)); // Infinity
System.out.println(StrictMath.scalb(Double.NEGATIVE_INFINITY, 1)); // -Infinity
System.out.println(StrictMath.scalb(0.0, 100)); // 0.0
static float scalb (float f, int scaleFactor)
Returns f × 2scaleFactor rounded as if performed by a single correctly rounded floating-point multiply.
This method is equivalent except a type to scalb(double d, int scaleFactor).
static double signum (double d)
Returns the signum function of the argument; zero if the argument is zero, 1.0 if the argument is greater than zero, -1.0 if the argument is less than zero.
System.out.println(StrictMath.signum(2.0)); // 1.0
System.out.println(StrictMath.signum(-2.0)); // -1.0
System.out.println(StrictMath.signum(100.0)); // 1.0
System.out.println(StrictMath.signum(-100.0)); // -1.0
System.out.println(StrictMath.signum(0.0)); // 0.0
System.out.println(StrictMath.signum(-0.0)); // -0.0
System.out.println(StrictMath.signum(Double.NaN)); // NaN
System.out.println(StrictMath.signum(Double.POSITIVE_INFINITY)); // 1.0
System.out.println(StrictMath.signum(Double.NEGATIVE_INFINITY)); // -1.0
static float signum (float f)
Returns the signum function of the argument; zero if the argument is zero, 1.0f if the argument is greater than zero, -1.0f if the argument is less than zero.
This method is equivalent except a type to signum(double d).
static double sin (double a)
Returns the trigonometric sine of an angle.
System.out.println(StrictMath.sin(-StrictMath.PI)); // -1.2246467991473532E-16 (≒ 0.0)
System.out.println(StrictMath.sin(-StrictMath.PI * 0.75)); // -0.7071067811865476
System.out.println(StrictMath.sin(-StrictMath.PI * 0.5)); // -1.0
System.out.println(StrictMath.sin(-StrictMath.PI * 0.25)); // -0.7071067811865475
System.out.println(StrictMath.sin(0.0)); // 0.0
System.out.println(StrictMath.sin(StrictMath.PI * 0.25)); // 0.7071067811865475
System.out.println(StrictMath.sin(StrictMath.PI * 0.5)); // 1.0
System.out.println(StrictMath.sin(StrictMath.PI * 0.75)); // 0.7071067811865476
System.out.println(StrictMath.sin(StrictMath.PI)); // 1.2246467991473532E-16 (≒ 0.0)
System.out.println(StrictMath.sin(Double.NEGATIVE_INFINITY)); // NaN
System.out.println(StrictMath.sin(Double.POSITIVE_INFINITY)); // NaN
System.out.println(StrictMath.sin(Double.NaN)); // NaN
static double sinh (double x)
Returns the hyperbolic sine of a double value.
System.out.println(StrictMath.sinh(-1.0)); // -1.1752011936438014
System.out.println(StrictMath.sinh(-0.5)); // -0.5210953054937474
System.out.println(StrictMath.sinh(0.0)); // 0.0
System.out.println(StrictMath.sinh(0.5)); // 0.5210953054937474
System.out.println(StrictMath.sinh(1.0)); // 1.1752011936438014
System.out.println(StrictMath.sinh(Double.NEGATIVE_INFINITY)); // -Infinity
System.out.println(StrictMath.sinh(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.sinh(Double.NaN)); // NaN
static double sqrt (double a)
Returns the correctly rounded positive square root of a double value.
System.out.println(StrictMath.sqrt(0.0)); // 0.0
System.out.println(StrictMath.sqrt(1.0)); // 1.0
System.out.println(StrictMath.sqrt(2.0)); // 1.4142135623730951
System.out.println(StrictMath.sqrt(4.0)); // 2.0
System.out.println(StrictMath.sqrt(9.0)); // 3.0
System.out.println(StrictMath.sqrt(16.0)); // 4.0
System.out.println(StrictMath.sqrt(25.0)); // 5.0
System.out.println(StrictMath.sqrt(-1.0)); // NaN
System.out.println(StrictMath.sqrt(Double.NaN)); // NaN
System.out.println(StrictMath.sqrt(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.sqrt(Double.NEGATIVE_INFINITY)); // NaN
static int subtractExact (int x, int y)
Returns the difference of the arguments, throwing an exception if the result overflows an int.
System.out.println(StrictMath.subtractExact(10, 1)); // 9
System.out.println(StrictMath.subtractExact(10, 2)); // 8
System.out.println(StrictMath.subtractExact(10, 3)); // 7
System.out.println(StrictMath.subtractExact(10, -1)); // 11
System.out.println(StrictMath.subtractExact(10, -2)); // 12
System.out.println(StrictMath.subtractExact(10, -3)); // 13
System.out.println(StrictMath.subtractExact(1000, 1)); // 999
System.out.println(StrictMath.subtractExact(-1000, 1)); // -1001
try {
System.out.println("MIN_VALUE : " + Integer.MIN_VALUE);
final var value = StrictMath.subtractExact(Integer.MIN_VALUE, 1);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//MIN_VALUE : -2147483648
//ArithmeticException!
final int value = Integer.MIN_VALUE - 1;
System.out.println(value); // 2147483647
static long subtractExact (long x, long y)
Returns the difference of the arguments, throwing an exception if the result overflows a long.
This method is equivalent except a type to subtractExact(int x, int y).
static double tan (double a)
Returns the trigonometric tangent of an angle.
System.out.println(StrictMath.tan(-StrictMath.PI * 0.5)); // -1.633123935319537E16 (≒ -Infinity)
System.out.println(StrictMath.tan(-StrictMath.PI * 0.25)); // -0.9999999999999999 (≒ -1.0)
System.out.println(StrictMath.tan(0.0)); // 0.0
System.out.println(StrictMath.tan(StrictMath.PI * 0.25)); // 0.9999999999999999 (≒ 1.0)
System.out.println(StrictMath.tan(StrictMath.PI * 0.5)); // 1.633123935319537E16 (≒ Infinity)
System.out.println(StrictMath.tan(Double.NEGATIVE_INFINITY)); // NaN
System.out.println(StrictMath.tan(Double.POSITIVE_INFINITY)); // NaN
System.out.println(StrictMath.tan(Double.NaN)); // NaN
static double tanh (double x)
Returns the hyperbolic tangent of a double value.
System.out.println(StrictMath.tanh(-1.0)); // -0.7615941559557649
System.out.println(StrictMath.tanh(-0.5)); // -0.46211715726000974
System.out.println(StrictMath.tanh(0.0)); // 0.0
System.out.println(StrictMath.tanh(0.5)); // 0.46211715726000974
System.out.println(StrictMath.tanh(1.0)); // 0.7615941559557649
System.out.println(StrictMath.tanh(Double.NEGATIVE_INFINITY)); // -1.0
System.out.println(StrictMath.tanh(Double.POSITIVE_INFINITY)); // 1.0
System.out.println(StrictMath.tanh(Double.NaN)); // NaN
static double toDegrees (double angrad)
Converts an angle measured in radians to an approximately equivalent angle measured in degrees.
System.out.println(StrictMath.toDegrees(0.0)); // 0.0
System.out.println(StrictMath.toDegrees(StrictMath.PI * 0.5)); // 90.0
System.out.println(StrictMath.toDegrees(StrictMath.PI)); // 180.0
System.out.println(StrictMath.toDegrees(StrictMath.PI * 1.5)); // 270.0
System.out.println(StrictMath.toDegrees(StrictMath.PI * 2.0)); // 360.0
static int toIntExact (long value)
Returns the value of the long argument, throwing an exception if the value overflows an int.
System.out.println(StrictMath.toIntExact(0L)); // 0
System.out.println(StrictMath.toIntExact(100L)); // 100
System.out.println(StrictMath.toIntExact(-100L)); // -100
System.out.println(StrictMath.toIntExact(Integer.MAX_VALUE)); // 2147483647
System.out.println(StrictMath.toIntExact(Integer.MIN_VALUE)); // -2147483648
try {
final var value = StrictMath.toIntExact(Integer.MAX_VALUE + 1L);
} catch (ArithmeticException e) {
System.out.println("ArithmeticException!");
}
// Result
// ↓
//ArithmeticException!
static double toRadians (double angdeg)
Converts an angle measured in degrees to an approximately equivalent angle measured in radians.
System.out.println(StrictMath.toRadians(0.0)); // 0.0
System.out.println(StrictMath.toRadians(90.0)); // 1.5707963267948966 ( ≒ StrictMath.PI * 0.5 )
System.out.println(StrictMath.toRadians(180.0)); // 3.141592653589793 ( ≒ StrictMath.PI * 1.0 )
System.out.println(StrictMath.toRadians(270.0)); // 4.71238898038469 ( ≒ StrictMath.PI * 1.5 )
System.out.println(StrictMath.toRadians(360.0)); // 6.283185307179586 ( ≒ StrictMath.PI * 2.0 )
static double ulp (double d)
Returns the size of an ulp of the argument.
System.out.println(StrictMath.ulp(1.0)); // 2.220446049250313E-16
System.out.println(StrictMath.ulp(2.0)); // 4.440892098500626E-16
System.out.println(StrictMath.ulp(3.0)); // 4.440892098500626E-16
System.out.println(StrictMath.ulp(4.0)); // 8.881784197001252E-16
System.out.println(StrictMath.ulp(5.0)); // 8.881784197001252E-16
System.out.println(StrictMath.ulp(1000.0)); // 1.1368683772161603E-13
System.out.println(StrictMath.ulp(2000.0)); // 2.2737367544323206E-13
System.out.println(StrictMath.ulp(3000.0)); // 4.547473508864641E-13
System.out.println(StrictMath.ulp(Double.NaN)); // NaN
System.out.println(StrictMath.ulp(Double.POSITIVE_INFINITY)); // Infinity
System.out.println(StrictMath.ulp(Double.NEGATIVE_INFINITY)); // Infinity
System.out.println(StrictMath.ulp(0.0)); // 4.9E-324 ( = Double.MIN_VALUE )
System.out.printf("%a%n", StrictMath.ulp(Double.MAX_VALUE)); // 0x1.0p971
static float ulp (float f)
Returns the size of an ulp of the argument.
This method is equivalent except a type to ulp(double d).
static long unsignedMultiplyHigh (long x, long y)
Returns as a long the most significant 64 bits of the unsigned 128-bit product of two unsigned 64-bit factors.
Please see also : multiplyHigh(long x, long y)
final var x = Long.MAX_VALUE;
System.out.printf("0x%x%n", x); // 0x7fffffffffffffff
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x10L)); // 0x7
System.out.printf("0x%x%n", StrictMath.unsignedMultiplyHigh(x, 0x10L)); // 0x7
final var x = Long.MIN_VALUE;
System.out.printf("0x%x%n", x); // 0x8000000000000000
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x10L)); // 0xfffffffffffffff8
System.out.printf("0x%x%n", StrictMath.unsignedMultiplyHigh(x, 0x10L)); // 0x8
System.out.printf("0x%x%n", StrictMath.multiplyHigh(x, 0x100L)); // 0xffffffffffffff80
System.out.printf("0x%x%n", StrictMath.unsignedMultiplyHigh(x, 0x100L)); // 0x80