Compare and round more carefully

* etc/NEWS: Document this.
* src/data.c (store_symval_forwarding):
* src/sound.c (parse_sound):
Do not botch NaN comparison.
* src/data.c (cons_to_unsigned, cons_to_signed):
Signal an error if a floating-point arg is not integral.
* src/data.c (cons_to_unsigned, cons_to_signed):
* src/fileio.c (file_offset):
Use simpler overflow check.
* src/dbusbind.c (xd_extract_signed, xd_extract_unsigned):
Avoid rounding error in overflow check.
(Fcar_less_than_car): Use arithcompare directly.
* test/src/charset-tests.el: New file.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 9c995930fbf..fe02236ecc2 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -915,6 +915,11 @@ Emacs integers with %e, %f, or %g conversions.  For example, on these
 hosts (eql N (string-to-number (format "%.0f" N))) now returns t for
 all Emacs integers N.
 
+---
+** Calls that accept floating-point integers (for use on hosts with
+limited integer range) now signal an error if arguments are not
+integral.  For example (decode-char 'ascii 0.5) now signals an error.
+
 +++
 ** The new function 'char-from-name' converts a Unicode name string
 to the corresponding character code.