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/*
* Copyright 2016 Carlos Ballesteros Velasco
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package java.lang;
import com.jtransc.annotation.JTranscKeep;
import com.jtransc.internal.JTranscCType;
public final class Long extends Number implements Comparable {
public static final long MIN_VALUE = 0x8000000000000000L;
public static final long MAX_VALUE = 0x7fffffffffffffffL;
public static final Class TYPE = (Class) Class.getPrimitiveClass("long");
public static String toString(long i, int radix) {
if (i == 0) return "0";
if (i == MIN_VALUE) return "-9223372036854775808";
StringBuilder out = new StringBuilder();
boolean negative = (i < 0);
if (negative) i = -i;
while (i != 0) {
out.append(JTranscCType.encodeDigit((int) (((i % radix) + radix) % radix)));
i /= radix;
}
if (negative) out.append("-");
out.reverse();
return out.toString();
}
public static String toUnsignedString(long i, int radix) {
if (i == 0) return "0";
StringBuilder out = new StringBuilder();
while (i != 0) {
out.append(JTranscCType.encodeDigit((int) Long.remainderUnsigned(i, radix)));
i = Long.divideUnsigned(i, radix);
}
out.reverse();
return out.toString();
}
public static String toHexString(long i) {
return toUnsignedString(i, 16);
}
public static String toOctalString(long i) {
return toUnsignedString(i, 8);
}
public static String toBinaryString(long i) {
return toUnsignedString(i, 2);
}
//@HaxeMethodBody("return N.str('' + p0);")
public static String toString(long i) {
return toString(i, 10);
}
public static String toUnsignedString(long i) {
return toUnsignedString(i, 10);
}
public static long parseLong(String s, int radix) throws NumberFormatException {
long result = 0;
int len = s.length();
boolean negative = (s.charAt(0) == '-');
int sign = negative ? -1 : 1;
int n = negative ? 1 : 0;
for (; n < len; n++) {
result *= radix;
result += JTranscCType.decodeDigit(s.charAt(n));
}
return result * sign;
}
// @TODO: CHECK!
public static long parseUnsignedLong(String s, int radix) throws NumberFormatException {
return parseLong(s, radix);
}
public static Long valueOf(String s, int radix) throws NumberFormatException {
return Long.valueOf(parseLong(s, radix));
}
public static long parseLong(String s) throws NumberFormatException {
return parseLong(s, 10);
}
public static long parseUnsignedLong(String s) throws NumberFormatException {
return parseUnsignedLong(s, 10);
}
public static Long valueOf(String s) throws NumberFormatException {
return valueOf(s, 10);
}
@JTranscKeep
public static Long valueOf(long l) {
return new Long(l);
}
public static Long decode(String nm) throws NumberFormatException {
if (nm.length() == 0) throw new NumberFormatException("Zero length string");
if (nm.startsWith("-")) return -decode(nm.substring(1));
if (nm.startsWith("+")) return decode(nm.substring(1));
if (nm.startsWith("0x")) return parseLong(nm.substring(2), 16);
if (nm.startsWith("0X")) return parseLong(nm.substring(2), 16);
if (nm.startsWith("#")) return parseLong(nm.substring(1), 16);
if (nm.startsWith("0")) return parseLong(nm.substring(1), 8);
return parseLong(nm, 10);
}
private final long value;
public Long(long value) {
this.value = value;
}
public Long(String s) throws NumberFormatException {
this.value = parseLong(s, 10);
}
public byte byteValue() {
return (byte) value;
}
public short shortValue() {
return (short) value;
}
public int intValue() {
return (int) value;
}
public long longValue() {
return value;
}
public float floatValue() {
return (float) value;
}
public double doubleValue() {
return (double) value;
}
public String toString() {
return toString(value);
}
@Override
public int hashCode() {
return Long.hashCode(value);
}
public static int hashCode(long value) {
return (int) (value ^ (value >>> 32));
}
public boolean equals(Object obj) {
if (!(obj instanceof Long)) return false;
return value == ((Long) obj).longValue();
}
public static Long getLong(String nm) {
return getLong(nm, null);
}
public static Long getLong(String nm, long val) {
return getLong(nm, Long.valueOf(val));
}
public static Long getLong(String nm, Long val) {
String out = System.getProperty(nm);
if (out == null) return val;
try {
return decode(nm);
} catch (NumberFormatException e) {
return val;
}
}
public int compareTo(Long anotherLong) {
return compare(this.value, anotherLong.value);
}
public static int compare(long x, long y) {
return (x < y) ? -1 : ((x == y) ? 0 : 1);
}
public static int compareUnsigned(long x, long y) {
return compare(x ^ MIN_VALUE, y ^ MIN_VALUE);
}
// https://github.com/google/guava/blob/master/guava/src/com/google/common/primitives/UnsignedLongs.java
// https://github.com/google/guava/blob/master/guava/src/com/google/common/primitives/UnsignedLong.java
public static long divideUnsigned(long dividend, long divisor) {
if (divisor < 0) return (compareUnsigned(dividend, divisor) < 0) ? 0 : 1;
if (dividend >= 0) return dividend / divisor;
long quotient = ((dividend >>> 1) / divisor) << 1;
long rem = dividend - quotient * divisor;
return quotient + (compareUnsigned(rem, divisor) >= 0 ? 1 : 0);
}
public static long remainderUnsigned(long dividend, long divisor) {
if (divisor < 0) return (compareUnsigned(dividend, divisor) < 0) ? dividend : (dividend - divisor);
if (dividend >= 0) return dividend % divisor;
long quotient = ((dividend >>> 1) / divisor) << 1;
long rem = dividend - quotient * divisor;
return rem - (compareUnsigned(rem, divisor) >= 0 ? divisor : 0);
}
public static final int SIZE = 64;
public static final int BYTES = SIZE / Byte.SIZE;
public static long highestOneBit(long v) {
// Hacker's Delight, Figure 3-1
v |= (v >> 1);
v |= (v >> 2);
v |= (v >> 4);
v |= (v >> 8);
v |= (v >> 16);
v |= (v >> 32);
return v - (v >>> 1);
}
public static long lowestOneBit(long v) {
return v & -v;
}
public static int numberOfLeadingZeros(long v) {
// After Hacker's Delight, Figure 5-6
if (v < 0) return 0;
if (v == 0) return 64;
// On a 64-bit VM, the two previous tests should probably be replaced by
// if (v <= 0) return ((int) (~v >> 57)) & 64;
int n = 1;
int i = (int) (v >>> 32);
if (i == 0) {
n += 32;
i = (int) v;
}
if (i >>> 16 == 0) {
n += 16;
i <<= 16;
}
if (i >>> 24 == 0) {
n += 8;
i <<= 8;
}
if (i >>> 28 == 0) {
n += 4;
i <<= 4;
}
if (i >>> 30 == 0) {
n += 2;
i <<= 2;
}
return n - (i >>> 31);
}
public static int numberOfTrailingZeros(long v) {
int low = (int) v;
return low != 0 ? Integer.numberOfTrailingZeros(low) : 32 + Integer.numberOfTrailingZeros((int) (v >>> 32));
}
public static int bitCount(long v) {
// Combines techniques from several sources
v -= (v >>> 1) & 0x5555555555555555L;
v = (v & 0x3333333333333333L) + ((v >>> 2) & 0x3333333333333333L);
int i = ((int) (v >>> 32)) + (int) v;
i = (i & 0x0F0F0F0F) + ((i >>> 4) & 0x0F0F0F0F);
i += i >>> 8;
i += i >>> 16;
return i & 0x0000007F;
}
public static long rotateLeft(long value, int distance) {
return (value << distance) | (value >>> -distance);
}
public static long rotateRight(long value, int distance) {
return (value >>> distance) | (value << -distance);
}
public static long reverse(long v) {
// Hacker's Delight 7-1, with minor tweak from Veldmeijer
// http://graphics.stanford.edu/~seander/bithacks.html
v = ((v >>> 1) & 0x5555555555555555L) | ((v & 0x5555555555555555L) << 1);
v = ((v >>> 2) & 0x3333333333333333L) | ((v & 0x3333333333333333L) << 2);
v = ((v >>> 4) & 0x0F0F0F0F0F0F0F0FL) | ((v & 0x0F0F0F0F0F0F0F0FL) << 4);
v = ((v >>> 8) & 0x00FF00FF00FF00FFL) | ((v & 0x00FF00FF00FF00FFL) << 8);
v = ((v >>> 16) & 0x0000FFFF0000FFFFL) | ((v & 0x0000FFFF0000FFFFL) << 16);
return ((v >>> 32)) | ((v) << 32);
}
public static int signum(long v) {
return (int) ((v >> 63) | (-v >>> 63));
}
public static long reverseBytes(long v) {
// Hacker's Delight 7-1, with minor tweak from Veldmeijer
// http://graphics.stanford.edu/~seander/bithacks.html
v = ((v >>> 8) & 0x00FF00FF00FF00FFL) | ((v & 0x00FF00FF00FF00FFL) << 8);
v = ((v >>> 16) & 0x0000FFFF0000FFFFL) | ((v & 0x0000FFFF0000FFFFL) << 16);
return ((v >>> 32)) | ((v) << 32);
}
public static long sum(long l, long r) {
return l + r;
}
public static long max(long l, long r) {
return Math.max(l, r);
}
public static long min(long l, long r) {
return Math.min(l, r);
}
}
