casting doubles to ints

From: Date: Wed, 04 Feb 2009 16:28:16 +0000
Subject: casting doubles to ints
Groups: php.internals 
Request: Send a blank email to internals+get-42918@lists.php.net to get a copy of this message
Hello all, I wanted to suggest back porting the behaviour of the DVAL_TO_LVAL macro from zend_operators.h from 5.3 to 5.2, and wondered whether people thought this was a good idea or not? The reason I want to do this is that while writing some tests, I noticed that the behaviour of casting a float to an int is a bit counter-intuitive on 64bit platforms for PHP 5.2. It looks as though this has been fixed in 5.3, and it would seem like a good idea to put this change back to 5.2 as well. From a personal point of view, it would mean I could write one test that would work on both 5.2 and 5.3, but it also seems like a sensible change, as the current behaviour is non-obvious. The change would cause some current tests to break, but I am happy to do the work to fix those up. This is how a few expressions get evaluated at the moment. Changing the macro would make the 5.2 behaviour match 5.3
Expression			5.3 (RHEL5-64)       5.2 (RHEL5-64)
(int) (PHP_INT_MAX) 9223372036854775807 9223372036854775807 (int) (PHP_INT_MAX + 1) 9223372036854775807 -9223372036854775808 (int) (PHP_INT_MAX + 1000) 9223372036854775807 -9223372036854775808 (int) (PHP_INT_MAX + 10000) 9223372036854775807 -9223372036854765568 Does this seem like a good change?

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