Make std.math.isIdentical work in CTFE

[dlangBugzillaToGithub]

n8sh.secondary reported this on 2019-09-08T16:13:35Z

Transfered from https://issues.dlang.org/show_bug.cgi?id=20197

Description

Making std.math.isIdentical work for real NaN when real is more than 64 bits requires either changing `is` for floats to be a binary comparison (like https://github.com/dlang/dmd/pull/7568) or adding support for CTFE reinterpretation of reals as byte arrays. This is a subissue of Issue #17007.

[dlangBugzillaToGithub]

n8sh.secondary commented on 2020-06-06T00:16:16Z

Actually it doesn't require this since in CTFE there is no way to construct a real nan with a payload that would be lost when casting to double.

[dlangBugzillaToGithub]

dlang-bot commented on 2020-06-06T01:32:49Z

@n8sh created dlang/phobos pull request #7515 "Make std.math.isIdentical work in CTFE" fixing this issue:

- Fix Issue 20197 - Make std.math.isIdentical work in CTFE

https://github.com/dlang/phobos/pull/7515