| java.lang.Object
 java.lang.Math
| Math | | final public strictfp class Math (Code) | | The class Math contains methods for performing basic
numeric operations.
version:
12/17/01 (CLDC 1.1)
since:
JDK1.0, CLDC 1.0 |
| Field Summary | |
| final public static double | E
The double value that is closer than any other to
e, the base of the natural logarithms. | | final public 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 | |
| public static int | abs(int a)
Returns the absolute value of an int value.
If the argument is not negative, the argument is returned.
If the argument is negative, the negation of the argument is returned.
Note that if the argument is equal to the value of
Integer.MIN_VALUE, the most negative representable
int value, the result is that same value, which is
negative.
Parameters:
a - an int value. | | public static long | abs(long a)
Returns the absolute value of a long value.
If the argument is not negative, the argument is returned.
If the argument is negative, the negation of the argument is returned.
Note that if the argument is equal to the value of
Long.MIN_VALUE, the most negative representable
long value, the result is that same value, which is
negative.
Parameters:
a - a long value. | | public static float | abs(float a)
Returns the absolute value of a float value.
If the argument is not negative, the argument is returned.
If the argument is negative, the negation of the argument is returned.
Special cases:
- If the argument is positive zero or negative zero, the
result is positive zero.
- If the argument is infinite, the result is positive infinity.
- If the argument is NaN, the result is NaN.
In other words, the result is equal to the value of the expression:
Float.intBitsToFloat(0x7fffffff & Float.floatToIntBits(a))
Parameters:
a - a float value. | | public static double | abs(double a)
Returns the absolute value of a double value.
If the argument is not negative, the argument is returned.
If the argument is negative, the negation of the argument is returned.
Special cases:
- If the argument is positive zero or negative zero, the result
is positive zero.
- If the argument is infinite, the result is positive infinity.
- If the argument is NaN, the result is NaN.
In other words, the result is equal to the value of the expression:
Double.longBitsToDouble((Double.doubleToLongBits(a)<<1)>>>1)
Parameters:
a - a double value. | | native public static double | ceil(double a)
Returns the smallest (closest to negative infinity)
double value that is not less than the argument and is
equal to a mathematical integer. | | native public static double | cos(double a)
Returns the trigonometric cosine of an angle. | | native public static double | floor(double a)
Returns the largest (closest to positive infinity)
double value that is not greater than the argument and
is equal to a mathematical integer. | | public static int | max(int a, int b)
Returns the greater of two int values. | | public static long | max(long a, long b)
Returns the greater of two long values. | | public static float | max(float a, float b)
Returns the greater of two float values. | | public static double | max(double a, double b)
Returns the greater of two double values. | | public static int | min(int a, int b)
Returns the smaller of two int values. | | public static long | min(long a, long b)
Returns the smaller of two long values. | | public static float | min(float a, float b)
Returns the smaller of two float values. | | public static double | min(double a, double b)
Returns the smaller of two double values. | | native public static double | sin(double a)
Returns the trigonometric sine of an angle. | | native public static double | sqrt(double a)
Returns the correctly rounded positive square root of a
double value.
Special cases:
- If the argument is NaN or less than zero, then the result
is NaN.
- If the argument is positive infinity, then the result is positive
infinity.
- If the argument is positive zero or negative zero, then the
result is the same as the argument.
Parameters:
a - a double value. | | native public static double | tan(double a)
Returns the trigonometric tangent of an angle. | | public static double | toDegrees(double angrad)
Converts an angle measured in radians to the equivalent angle
measured in degrees. | | public static double | toRadians(double angdeg)
Converts an angle measured in degrees to the equivalent angle
measured in radians. |
| E | | final public static double E(Code) | | The double value that is closer than any other to
e, the base of the natural logarithms.
since:
CLDC 1.1 |
| PI | | final public static double PI(Code) | | The double value that is closer than any other to
pi, the ratio of the circumference of a circle to its diameter.
since:
CLDC 1.1 |
| abs | | public static int abs(int a)(Code) | | Returns the absolute value of an int value.
If the argument is not negative, the argument is returned.
If the argument is negative, the negation of the argument is returned.
Note that if the argument is equal to the value of
Integer.MIN_VALUE, the most negative representable
int value, the result is that same value, which is
negative.
Parameters:
a - an int value. the absolute value of the argument.
See Also: java.lang.Integer.MIN_VALUE |
| abs | | public static long abs(long a)(Code) | | Returns the absolute value of a long value.
If the argument is not negative, the argument is returned.
If the argument is negative, the negation of the argument is returned.
Note that if the argument is equal to the value of
Long.MIN_VALUE, the most negative representable
long value, the result is that same value, which is
negative.
Parameters:
a - a long value. the absolute value of the argument.
See Also: java.lang.Long.MIN_VALUE |
| abs | | public static float abs(float a)(Code) | | Returns the absolute value of a float value.
If the argument is not negative, the argument is returned.
If the argument is negative, the negation of the argument is returned.
Special cases:
- If the argument is positive zero or negative zero, the
result is positive zero.
- If the argument is infinite, the result is positive infinity.
- If the argument is NaN, the result is NaN.
In other words, the result is equal to the value of the expression:
Float.intBitsToFloat(0x7fffffff & Float.floatToIntBits(a))
Parameters:
a - a float value. the absolute value of the argument.
since:
CLDC 1.1 |
| abs | | public static double abs(double a)(Code) | | Returns the absolute value of a double value.
If the argument is not negative, the argument is returned.
If the argument is negative, the negation of the argument is returned.
Special cases:
- If the argument is positive zero or negative zero, the result
is positive zero.
- If the argument is infinite, the result is positive infinity.
- If the argument is NaN, the result is NaN.
In other words, the result is equal to the value of the expression:
Double.longBitsToDouble((Double.doubleToLongBits(a)<<1)>>>1)
Parameters:
a - a double value. the absolute value of the argument.
since:
CLDC 1.1 |
| ceil | | native public static double ceil(double a)(Code) | | Returns the smallest (closest to negative infinity)
double value that is not less than the argument and is
equal to a mathematical integer. Special cases:
- If the argument value is already equal to a mathematical
integer, then the result is the same as the argument.
- If the argument is NaN or an infinity or positive zero or negative
zero, then the result is the same as the argument.
- If the argument value is less than zero but greater than -1.0,
then the result is negative zero.
Note that the value of Math.ceil(x) is exactly the
value of -Math.floor(-x).
Parameters:
a - a double value. the smallest (closest to negative infinity)double value that is not less than the argumentand is equal to a mathematical integer.
since:
CLDC 1.1 |
| cos | | native public static double cos(double a)(Code) | | Returns the trigonometric cosine of an angle. Special case:
- If the argument is NaN or an infinity, then the
result is NaN.
Parameters:
a - an angle, in radians. the cosine of the argument.
since:
CLDC 1.1 |
| floor | | native public static double floor(double a)(Code) | | Returns the largest (closest to positive infinity)
double value that is not greater than the argument and
is equal to a mathematical integer. Special cases:
- If the argument value is already equal to a mathematical
integer, then the result is the same as the argument.
- If the argument is NaN or an infinity or positive zero or
negative zero, then the result is the same as the argument.
Parameters:
a - a double value. the largest (closest to positive infinity)double value that is not greater than the argumentand is equal to a mathematical integer.
since:
CLDC 1.1 |
| max | | public static int max(int a, int b)(Code) | | Returns the greater of two int values. That is, the
result is the argument closer to the value of
Integer.MAX_VALUE. If the arguments have the same value,
the result is that same value.
Parameters:
a - an int value.
Parameters:
b - an int value. the larger of a and b.
See Also: java.lang.Long.MAX_VALUE |
| max | | public static long max(long a, long b)(Code) | | Returns the greater of two long values. That is, the
result is the argument closer to the value of
Long.MAX_VALUE. If the arguments have the same value,
the result is that same value.
Parameters:
a - a long value.
Parameters:
b - a long value. the larger of a and b.
See Also: java.lang.Long.MAX_VALUE |
| max | | public static float max(float a, float b)(Code) | | Returns the greater of two float values. That is, the
result is the argument closer to positive infinity. If the
arguments have the same value, the result is that same value. If
either value is NaN, then the result is NaN.
Unlike the the numerical comparison operators, this method considers
negative zero to be strictly smaller than positive zero. If one
argument is positive zero and the other negative zero, the result
is positive zero.
Parameters:
a - a float value.
Parameters:
b - a float value. the larger of a and b. |
| max | | public static double max(double a, double b)(Code) | | Returns the greater of two double values. That is, the
result is the argument closer to positive infinity. If the
arguments have the same value, the result is that same value. If
either value is NaN, then the result is NaN.
Unlike the the numerical comparison operators, this method considers
negative zero to be strictly smaller than positive zero. If one
argument is positive zero and the other negative zero, the result
is positive zero.
Parameters:
a - a double value.
Parameters:
b - a double value. the larger of a and b. |
| min | | public static int min(int a, int b)(Code) | | Returns the smaller of two int values. That is, the
result the argument closer to the value of Integer.MIN_VALUE.
If the arguments have the same value, the result is that same value.
Parameters:
a - an int value.
Parameters:
b - an int value. the smaller of a and b.
See Also: java.lang.Long.MIN_VALUE |
| min | | public static long min(long a, long b)(Code) | | Returns the smaller of two long values. That is, the
result is the argument closer to the value of
Long.MIN_VALUE. If the arguments have the same value,
the result is that same value.
Parameters:
a - a long value.
Parameters:
b - a long value. the smaller of a and b.
See Also: java.lang.Long.MIN_VALUE |
| min | | public static float min(float a, float b)(Code) | | Returns the smaller of two float values. That is, the
result is the value closer to negative infinity. If the arguments
have the same value, the result is that same value. If either value
is NaN, then the result is NaN. Unlike the
the numerical comparison operators, this method considers negative zero
to be strictly smaller than positive zero. If one argument is
positive zero and the other is negative zero, the result is negative
zero.
Parameters:
a - a float value.
Parameters:
b - a float value. the smaller of a and b.
since:
CLDC 1.1 |
| min | | public static double min(double a, double b)(Code) | | Returns the smaller of two double values. That is, the
result is the value closer to negative infinity. If the arguments have
the same value, the result is that same value. If either value
is NaN, then the result is NaN. Unlike the
the numerical comparison operators, this method considers negative zero
to be strictly smaller than positive zero. If one argument is
positive zero and the other is negative zero, the result is negative
zero.
Parameters:
a - a double value.
Parameters:
b - a double value. the smaller of a and b.
since:
CLDC 1.1 |
| sin | | native public static double sin(double a)(Code) | | Returns the trigonometric sine of an angle. Special cases:
- If the argument is NaN or an infinity, then the
result is NaN.
- If the argument is positive zero, then the result is
positive zero; if the argument is negative zero, then the
result is negative zero.
Parameters:
a - an angle, in radians. the sine of the argument.
since:
CLDC 1.1 |
| sqrt | | native public static double sqrt(double a)(Code) | | Returns the correctly rounded positive square root of a
double value.
Special cases:
- If the argument is NaN or less than zero, then the result
is NaN.
- If the argument is positive infinity, then the result is positive
infinity.
- If the argument is positive zero or negative zero, then the
result is the same as the argument.
Parameters:
a - a double value. the positive square root of a.If the argument is NaN or less than zero, the result is NaN.
since:
CLDC 1.1 |
| tan | | native public static double tan(double a)(Code) | | Returns the trigonometric tangent of an angle. Special cases:
- If the argument is NaN or an infinity, then the result
is NaN.
- If the argument is positive zero, then the result is
positive zero; if the argument is negative zero, then the
result is negative zero
Parameters:
a - an angle, in radians. the tangent of the argument.
since:
CLDC 1.1 |
| toDegrees | | public static double toDegrees(double angrad)(Code) | | Converts an angle measured in radians to the equivalent angle
measured in degrees.
Parameters:
angrad - an angle, in radians the measurement of the angle angradin degrees.
since:
CLDC 1.1 |
| toRadians | | public static double toRadians(double angdeg)(Code) | | Converts an angle measured in degrees to the equivalent angle
measured in radians.
Parameters:
angdeg - an angle, in degrees the measurement of the angle angdegin radians.
since:
CLDC 1.1 |
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