RFR: 8075806: divideExact is missing in java.lang.Math

[Joe Darcy]

On Tue, 13 Jul 2021 17:21:52 GMT, Brian Burkhalter <bpb at openjdk.org> 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.

Are there examples in the JDK or its tests where a method with this definition would be used?

src/java.base/share/classes/java/lang/Math.java line 1008:

> 1006:      * Returns the quotient of the arguments, throwing an exception if the
> 1007:      * result overflows an {@code int}.  Such overflow can occur if and only
> 1008:      * if either {@code y} is zero, or both {@code x} is

I think the divide by zero case should be discussed separately from overflow.

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PR: https://git.openjdk.java.net/jdk/pull/4770