[Gmp-commit] /var/hg/gmp: mini-gmp tests: Use volatile for floating point var...

[mercurial at gmplib.org]

details:   /var/hg/gmp/rev/ad6a16e4df98
changeset: 15485:ad6a16e4df98
user:      Niels M?ller <nisse at lysator.liu.se>
date:      Mon Feb 25 17:21:49 2013 +0100
description:
mini-gmp tests: Use volatile for floating point variables.

diffstat:

 ChangeLog                 |  5 ++++-
 mini-gmp/tests/t-double.c |  4 +++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diffs (32 lines):

diff -r b6058270834c -r ad6a16e4df98 ChangeLog
--- a/ChangeLog	Mon Feb 25 15:48:02 2013 +0100
+++ b/ChangeLog	Mon Feb 25 17:21:49 2013 +0100
@@ -1,10 +1,13 @@
 2013-02-25  Niels Möller  <nisse at lysator.liu.se>
 
+	* mini-gmp/tests/t-double.c (testmain): Declare double variables
+	as volatile, to drop extended precision.
+
 	* mini-gmp/tests/testutils.c (testfree): New function. Use it
 	everywhere where test programs deallocate storage allocated via
 	the mini-gmp allocation functions, including uses of mpz_get_str
 	for various test failure messages.
-	
+
 	* mpz/limbs_finish.c (mpz_limbs_finish): New file and function.
 	* mpz/limbs_modify.c (mpz_limbs_modify): New file and function.
 	* mpz/limbs_read.c (mpz_limbs_read): New file and function.
diff -r b6058270834c -r ad6a16e4df98 mini-gmp/tests/t-double.c
--- a/mini-gmp/tests/t-double.c	Mon Feb 25 15:48:02 2013 +0100
+++ b/mini-gmp/tests/t-double.c	Mon Feb 25 17:21:49 2013 +0100
@@ -83,7 +83,9 @@
 
   for (i = 0; i < COUNT; i++)
     {
-      double d, f;
+      /* Use volatile, to avoid extended precision in floating point
+	 registers, e.g., on m68k and 80387. */
+      volatile double d, f;
       unsigned long m;
       int e;