20.11

java.lang.Math

THE PACKAGE JAVA.LANG

20.11.14

public static double IEEEremainder(double x, double y)

This method computes the remainder operation on two arguments as prescribed

by the IEEE 754 standard: the remainder value is mathematically equal to

x

y

n

 where

n

 is the mathematical integer closest to the exact mathematical

value of the quotient

x

y

; if two mathematical integers are equally close to

x

y

then

n

 is the integer that is even. If the remainder is zero, its sign is the same as the

sign of the first argument.

Special cases:

If either argument is NaN, or the first argument is infinite, or the second argu 

ment is positive zero or negative zero, then the result is NaN.

If the first argument is finite and the second argument is infinite, then the

result is the same as the first argument.

20.11.15

public static double ceil(double a)

The result is 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)

.

20.11.16

public static double floor(double a)

The result is 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.

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