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PC World Komputer 1995 November
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PCWK1195.iso
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math.java
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1995-08-11
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/*
* @(#)Math.java 1.9 95/02/09
*
* Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/
package java.lang;
/**
* Math library.
* @version 1.9, 09 Feb 1995
*/
public final
class Math {
/**
* Don't let anyone instanciate this class
*/
private Math() {}
public static native double sin(double a);
public static native double cos(double a);
public static native double tan(double a);
public static native double asin(double a);
public static native double acos(double a);
public static native double atan(double a);
public static native double exp(double a);
public static native double log(double a);
public static native double sqrt(double a);
public static native double ceil(double a);
public static native double floor(double a);
public static native double rint(double a);
public static native double atan2(double a, double b);
public static native double annuity(double a, double b);
public static native double pow(double a, double b);
public static int round(float a) {
return (int)floor(a + 0.5);
}
public static int round(double a) {
return (int)floor(a + (double)0.5);
}
/**
* Set the seed of the random generator.
*/
public static native void srandom(int seed);
/**
* Generate a random number between 0.0 and 1.0.
* @return a number between 0.0 and 1.0.
*/
public static native double random();
public static int abs(int a) {
return (a < 0) ? -a : a;
}
public static long abs(long a) {
return (a < 0) ? -a : a;
}
public static float abs(float a) {
return (a < 0) ? -a : a;
}
public static double abs(double a) {
return (a < 0) ? -a : a;
}
public static int max(int a, int b) {
return (a >= b) ? a : b;
}
public static long max(long a, long b) {
return (a >= b) ? a : b;
}
public static float max(float a, float b) {
return (a >= b) ? a : b;
}
public static double max(double a, double b) {
return (a >= b) ? a : b;
}
public static int min(int a, int b) {
return (a <= b) ? a : b;
}
public static long min(long a, long b) {
return (a <= b) ? a : b;
}
public static float min(float a, float b) {
return (a <= b) ? a : b;
}
public static double min(double a, double b) {
return (a <= b) ? a : b;
}
}