// ex: se sts=4 sw=4 expandtab:
/**
* Yeti core library - Number interface.
*
* Copyright (c) 2007,2008 Madis Janson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package yeti.lang;
import java.math.BigInteger;
public final class FloatNum extends Num {
private final double v;
public FloatNum(double num) {
v = num;
}
public Num add(Num num) {
return new FloatNum(v + num.doubleValue());
}
public Num add(long num) {
return new FloatNum(v + num);
}
public Num add(RatNum num) {
return new FloatNum(v + num.doubleValue());
}
public Num add(BigInteger num) {
return new FloatNum(v + num.doubleValue());
}
public Num mul(Num num) {
return new FloatNum(v * num.doubleValue());
}
public Num mul(long num) {
return new FloatNum(v * num);
}
public Num mul(RatNum num) {
return new FloatNum(v * num.doubleValue());
}
public Num mul(BigInteger num) {
return new FloatNum(v * num.doubleValue());
}
public Num div(Num num) {
return new FloatNum(v / num.doubleValue());
}
public Num div(long num) {
return new FloatNum(v / num);
}
public Num divFrom(long num) {
return new FloatNum(num / v);
}
public Num divFrom(RatNum num) {
return new FloatNum(num.doubleValue() / v);
}
public Num intDiv(Num num) {
double res = (v >= 0 ? Math.floor(v) : Math.ceil(v)) /
num.doubleValue();
return res > 2147483647.0 || res < -2147483647.0
? new FloatNum(res >= 0 ? Math.floor(res) : Math.ceil(res))
: (Num) new IntNum((long) res);
}
public Num intDiv(int num) {
double res = (v >= 0 ? Math.floor(v) : Math.ceil(v)) / num;
return res > 2147483647.0 || res < -2147483647.0
? new FloatNum(res >= 0 ? Math.floor(res) : Math.ceil(res))
: (Num) new IntNum((long) res);
}
public Num intDivFrom(long num) {
return new IntNum((long)
(num / (v >= 0 ? Math.floor(v) : Math.ceil(v))));
}
public Num intDivFrom(BigInteger num) {
// XXX
double res = num.doubleValue() /
(v >= 0 ? Math.floor(v) : Math.ceil(v));
return res > 2147483647.0 || res < -2147483647.0
? new FloatNum(res >= 0 ? Math.floor(res) : Math.ceil(res))
: (Num) new IntNum((long) res);
}
public Num rem(Num num) {
return new IntNum((long) v % num.longValue());
}
public Num rem(int num) {
return new IntNum((long) v % num);
}
public Num remFrom(long num) {
return new IntNum(num % (long) v);
}
public Num remFrom(BigInteger num) {
// XXX
double res = num.doubleValue() %
(v >= 0 ? Math.floor(v) : Math.ceil(v));
return res > 2147483647.0 || res < -2147483647.0
? new FloatNum(res >= 0 ? Math.floor(res) : Math.ceil(res))
: (Num) new IntNum((long) res);
}
public Num sub(Num num) {
return new FloatNum(v - num.doubleValue());
}
public Num sub(long num) {
return new FloatNum(v - num);
}
public Num subFrom(long num) {
return new FloatNum(num - v);
}
public Num subFrom(RatNum num) {
return new FloatNum(num.doubleValue() - v);
}
public Num subFrom(BigInteger num) {
return new FloatNum(num.doubleValue() - v);
}
public Num and(Num num) {
return new IntNum(num.longValue() & (long) v);
}
public Num and(BigInteger num) {
return new IntNum(num.longValue() & (long) v);
}
public Num or(Num num) {
return num.or((long) v);
}
public Num or(long num) {
return new IntNum(num | (long) v);
}
public Num xor(Num num) {
return num.xor((long) v);
}
public Num xor(long num) {
return new IntNum(num ^ (long) v);
}
public byte byteValue() {
return (byte) v;
}
public short shortValue() {
return (short) v;
}
public int intValue() {
return (int) v;
}
public long longValue() {
return (long) v;
}
public float floatValue() {
return (float) v;
}
public double doubleValue() {
return v;
}
public int compareTo(Object num) {
double x = ((Number) num).doubleValue();
return v < x ? -1 : v > x ? 1 : 0;
}
public int rCompare(long num) {
return v < num ? 1 : v > num ? -1 : 0;
}
public int rCompare(RatNum num) {
double x = num.doubleValue();
return v < x ? 1 : v > x ? -1 : 0;
}
public int rCompare(BigInteger num) {
double x = num.doubleValue();
return v < x ? 1 : v > x ? -1 : 0;
}
public String toString() {
return Double.toString(v);
}
public int hashCode() {
// hashCode must be same when equals is same
// a bit rough, but hopefully it satisfies that condition ;)
long x = (long) v;
long d = Double.doubleToLongBits(v - x);
if (d != 0x8000000000000000L) {
x ^= d;
}
return (int) (x ^ (x >>> 32));
}
public boolean equals(Object num) {
// It returns false when comparing two NaNs, however this should still
// follow the hashCode/equals contract as it is allowed to have same
// hashCode for values not equal. A bit weirdness can happen, like not
// founding NaN from hash containing it, but fixing it isn't probably
// worth the performance overhead of making equals more complicated.
// Just avoid using NaN's, they are fucked up in IEEE (and therefore
// JVM) floats.
return num instanceof Num && v == ((Num) num).doubleValue();
}
}