Fix rounding errors in <, =, etc.

* etc/NEWS: Document this.
* src/bytecode.c (exec_byte_code):
* src/data.c (arithcompare):
Do not lose information when comparing floats to integers.
* test/src/data-tests.el (data-tests-=, data-tests-<)
(data-tests->, data-tests-<=, data-tests->=):
Test this.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 5b5baff44e1..17353936e7f 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -902,6 +902,11 @@ interpreting consecutive runs of numerical characters as numbers, and
 compares their numerical values.  According to this predicate,
 "foo2.png" is smaller than "foo12.png".
 
+---
+** Numeric comparisons no longer return incorrect answers due to
+internal rounding errors.  For example, (< most-positive-fixnum (+ 1.0
+most-positive-fixnum)) now correctly returns t on 64-bit hosts.
+
 +++
 ** The new function 'char-from-name' converts a Unicode name string
 to the corresponding character code.