Android Utililty Methods Long Overflow Check

List of utility methods to do Long Overflow Check

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Description

The list of methods to do Long Overflow Check are organized into topic(s).

Method

longaddAndCheck(long a, long b)
Add two long integers, checking for overflow. 
return ArithmeticUtils.addAndCheck(a, b,
        LocalizedFormats.OVERFLOW_IN_ADDITION);
longaddAndCheck(long a, long b, Localizable pattern)
Add two long integers, checking for overflow. 
long ret;
if (a > b) {
    ret = addAndCheck(b, a, pattern);
} else {
    if (a < 0) {
        if (b < 0) {
            if (Long.MIN_VALUE - b <= a) {
                ret = a + b;
...
longmulAndCheck(long a, long b)
Multiply two long integers, checking for overflow. 
long ret;
if (a > b) {
    ret = mulAndCheck(b, a);
} else {
    if (a < 0) {
        if (b < 0) {
            if (a >= Long.MAX_VALUE / b) {
                ret = a * b;
...
longsubAndCheck(long a, long b)
Subtract two long integers, checking for overflow. 
long ret;
if (b == Long.MIN_VALUE) {
    if (a < 0) {
        ret = a - b;
    } else {
        throw new MathArithmeticException(
                LocalizedFormats.OVERFLOW_IN_ADDITION, a, -b);
} else {
    ret = addAndCheck(a, -b, LocalizedFormats.OVERFLOW_IN_ADDITION);
return ret;