[src/trunk]: src/tests/lib/libm Test ldexp(x, n) == x * exp2(n) && ldexpf(x, ...

[jruoho <jruoho%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5809b875277a
branches:  trunk
changeset: 769519:5809b875277a
user:      jruoho <jruoho%NetBSD.org@localhost>
date:      Tue Sep 13 07:03:36 2011 +0000

description:
Test ldexp(x, n) == x * exp2(n) && ldexpf(x, n) == x * exp2f(n).

diffstat:

 tests/lib/libm/t_ldexp.c |  48 ++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 46 insertions(+), 2 deletions(-)

diffs (89 lines):

diff -r 513d57e5dc90 -r 5809b875277a tests/lib/libm/t_ldexp.c
--- a/tests/lib/libm/t_ldexp.c  Tue Sep 13 06:50:41 2011 +0000
+++ b/tests/lib/libm/t_ldexp.c  Tue Sep 13 07:03:36 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ldexp.c,v 1.4 2011/09/12 17:46:39 jruoho Exp $ */
+/* $NetBSD: t_ldexp.c,v 1.5 2011/09/13 07:03:36 jruoho Exp $ */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ldexp.c,v 1.4 2011/09/12 17:46:39 jruoho Exp $");
+__RCSID("$NetBSD: t_ldexp.c,v 1.5 2011/09/13 07:03:36 jruoho Exp $");
 
 #include <math.h>
 #include <limits.h>
@@ -41,6 +41,27 @@
 /*
  * ldexp(3)
  */
+ATF_TC(ldexp_exp2);
+ATF_TC_HEAD(ldexp_exp2, tc)
+{
+       atf_tc_set_md_var(tc, "descr", "Test ldexp(x, n) == x * exp2(n)");
+}
+
+ATF_TC_BODY(ldexp_exp2, tc)
+{
+#ifndef __vax__
+       const double n[] = { 1, 2, 3, 25, 50, 100, 123, 321, 500 };
+       const double x = 12.1288221;
+       double y;
+       size_t i;
+
+       for (i = 0; i < __arraycount(n); i++) {
+               y = ldexp(x, n[i]);
+               ATF_CHECK(x * exp2(n[i]));
+       }
+#endif
+}
+
 ATF_TC(ldexp_nan);
 ATF_TC_HEAD(ldexp_nan, tc)
 {
@@ -143,6 +164,27 @@
 #endif
 }
 
+ATF_TC(ldexpf_exp2f);
+ATF_TC_HEAD(ldexpf_exp2f, tc)
+{
+       atf_tc_set_md_var(tc, "descr", "Test ldexpf(x, n) == x * exp2f(n)");
+}
+
+ATF_TC_BODY(ldexpf_exp2f, tc)
+{
+#ifndef __vax__
+       const float n[] = { 1, 2, 3, 25, 50, 100, 123, 321, 500 };
+       const float x = 12.1288221;
+       float y;
+       size_t i;
+
+       for (i = 0; i < __arraycount(n); i++) {
+               y = ldexpf(x, n[i]);
+               ATF_CHECK(x * exp2f(n[i]));
+       }
+#endif
+}
+
 ATF_TC(ldexpf_nan);
 ATF_TC_HEAD(ldexpf_nan, tc)
 {
@@ -252,12 +294,14 @@
 ATF_TP_ADD_TCS(tp)
 {
 
+       ATF_TP_ADD_TC(tp, ldexp_exp2);
        ATF_TP_ADD_TC(tp, ldexp_nan);
        ATF_TP_ADD_TC(tp, ldexp_inf_neg);
        ATF_TP_ADD_TC(tp, ldexp_inf_pos);
        ATF_TP_ADD_TC(tp, ldexp_zero_neg);
        ATF_TP_ADD_TC(tp, ldexp_zero_pos);
 
+       ATF_TP_ADD_TC(tp, ldexpf_exp2f);
        ATF_TP_ADD_TC(tp, ldexpf_nan);
        ATF_TP_ADD_TC(tp, ldexpf_inf_neg);
        ATF_TP_ADD_TC(tp, ldexpf_inf_pos);