Sorry, typo
int q = x / y;
if ((x & y & q) >= 0) {
return q; // q, not r
}
throw new ArithmeticException("integer overflow");
On 2021-07-14 21:26, Raffaello Giulietti wrote:
One could also divide first and then check the result:
int q = x / y;
if ((x & y & q) >= 0) {
return r;
}
throw new ArithmeticException("integer overflow");
No idea about relative perf.
On 2021-07-13 19:32, Brian Burkhalter wrote:
Please consider this proposal to add `divideExact()` methods for
integral data types to `java.lang.Math` thereby rounding out "exact"
support to all four basic arithmetic operations.
-------------
Commit messages:
- 8075806: divideExact is missing in java.lang.Math
Changes: https://git.openjdk.java.net/jdk/pull/4770/files
Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4770&range=00
Issue: https://bugs.openjdk.java.net/browse/JDK-8075806
Stats: 109 lines in 2 files changed: 100 ins; 5 del; 4 mod
Patch: https://git.openjdk.java.net/jdk/pull/4770.diff
Fetch: git fetch https://git.openjdk.java.net/jdk
pull/4770/head:pull/4770
PR: https://git.openjdk.java.net/jdk/pull/4770
