ceil, floor, round, trunc: enhance tests of -0

* tests/test-ceilf1.c (main): Ensure correct sign of result.
* tests/test-ceill.c (main): Likewise.
* tests/test-floorf1.c (main): Likewise.
* tests/test-floorl.c (main): Likewise.
* tests/test-round1.c (main): Likewise.
* tests/test-roundf1.c (main): Likewise.
* tests/test-roundl.c (main): Likewise.
* tests/test-trunc1.c (main): Likewise.
* tests/test-truncf1.c (main): Likewise.
* tests/test-truncl.c (main): Likewise.

Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/ChangeLog b/ChangeLog
index 3106ba7..ea1a01f 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,19 @@
 2010-11-04  Eric Blake  <eblake@redhat.com>
 
+       ceil, floor, round, trunc: enhance tests of -0
+       * tests/test-ceilf1.c (main): Ensure correct sign of result.
+       * tests/test-ceill.c (main): Likewise.
+       * tests/test-floorf1.c (main): Likewise.
+       * tests/test-floorl.c (main): Likewise.
+       * tests/test-round1.c (main): Likewise.
+       * tests/test-roundf1.c (main): Likewise.
+       * tests/test-roundl.c (main): Likewise.
+       * tests/test-trunc1.c (main): Likewise.
+       * tests/test-truncf1.c (main): Likewise.
+       * tests/test-truncl.c (main): Likewise.
+
+2010-11-04  Eric Blake  <eblake@redhat.com>
+
        frexp, tests: work around ICC bug with -zero
        * m4/frexp.m4 (gl_FUNC_FREXP_WORKS): Compute -0.0 in a way that
        works with more compilers.

diff --git a/modules/ceilf-tests b/modules/ceilf-tests
index 040fd1b..a0472a7 100644 (file)
--- a/modules/ceilf-tests
+++ b/modules/ceilf-tests
@@ -9,6 +9,7 @@ tests/macros.h
 Depends-on:
 float
 isnanf-nolibm
+signbit
 stdbool
 stdint
 

diff --git a/tests/test-ceilf1.c b/tests/test-ceilf1.c
index 86bb49e..4e38247 100644 (file)
--- a/tests/test-ceilf1.c
+++ b/tests/test-ceilf1.c
@@ -33,7 +33,9 @@ main ()
 {
   /* Zero.  */
   ASSERT (ceilf (0.0f) == 0.0f);
+  ASSERT (!signbit (ceilf (0.0f)));
   ASSERT (ceilf (minus_zerof) == 0.0f);
+  ASSERT (!!signbit (minus_zerof) == !!signbit (ceilf (minus_zerof)));
   /* Positive numbers.  */
   ASSERT (ceilf (0.3f) == 1.0f);
   ASSERT (ceilf (0.7f) == 1.0f);

diff --git a/tests/test-ceill.c b/tests/test-ceill.c
index cac45b7..f627a9e 100644 (file)
--- a/tests/test-ceill.c
+++ b/tests/test-ceill.c
@@ -40,7 +40,9 @@ main ()
 
   /* Zero.  */
   ASSERT (ceill (0.0L) == 0.0L);
+  ASSERT (!signbit (ceill (0.0L)));
   ASSERT (ceill (minus_zerol) == 0.0L);
+  ASSERT (!!signbit (minus_zerol) == !!signbit (ceill (minus_zerol)));
   /* Positive numbers.  */
   ASSERT (ceill (0.3L) == 1.0L);
   ASSERT (ceill (0.7L) == 1.0L);

diff --git a/tests/test-floorf1.c b/tests/test-floorf1.c
index 39261d8..f0f7716 100644 (file)
--- a/tests/test-floorf1.c
+++ b/tests/test-floorf1.c
@@ -33,7 +33,9 @@ main ()
 {
   /* Zero.  */
   ASSERT (floorf (0.0f) == 0.0f);
+  ASSERT (!signbit (floorf (0.0f)));
   ASSERT (floorf (minus_zerof) == 0.0f);
+  ASSERT (!!signbit (minus_zerof) == !!signbit (floorf (minus_zerof)));
   /* Positive numbers.  */
   ASSERT (floorf (0.3f) == 0.0f);
   ASSERT (floorf (0.7f) == 0.0f);

diff --git a/tests/test-floorl.c b/tests/test-floorl.c
index 84717f8..2675a9e 100644 (file)
--- a/tests/test-floorl.c
+++ b/tests/test-floorl.c
@@ -40,7 +40,9 @@ main ()
 
   /* Zero.  */
   ASSERT (floorl (0.0L) == 0.0L);
+  ASSERT (!signbit (floorl (0.0L)));
   ASSERT (floorl (minus_zerol) == 0.0L);
+  ASSERT (!!signbit (minus_zerol) == !!signbit (floorl (minus_zerol)));
   /* Positive numbers.  */
   ASSERT (floorl (0.3L) == 0.0L);
   ASSERT (floorl (0.7L) == 0.0L);

diff --git a/tests/test-round1.c b/tests/test-round1.c
index 86fd1de..4711a74 100644 (file)
--- a/tests/test-round1.c
+++ b/tests/test-round1.c
@@ -35,7 +35,9 @@ main ()
 {
   /* Zero.  */
   ASSERT (round (0.0) == 0.0);
+  ASSERT (!signbit (round (0.0)));
   ASSERT (round (minus_zerod) == 0.0);
+  ASSERT (!!signbit (minus_zerod) == !!signbit (round (minus_zerod)));
   /* Positive numbers.  */
   ASSERT (round (0.3) == 0.0);
   ASSERT (round (0.5) == 1.0);

diff --git a/tests/test-roundf1.c b/tests/test-roundf1.c
index 33609bb..354dcf0 100644 (file)
--- a/tests/test-roundf1.c
+++ b/tests/test-roundf1.c
@@ -35,7 +35,9 @@ main ()
 {
   /* Zero.  */
   ASSERT (roundf (0.0f) == 0.0f);
+  ASSERT (!signbit (roundf (0.0f)));
   ASSERT (roundf (minus_zerof) == 0.0f);
+  ASSERT (!!signbit (minus_zerof) == !!signbit (roundf (minus_zerof)));
   /* Positive numbers.  */
   ASSERT (roundf (0.3f) == 0.0f);
   ASSERT (roundf (0.5f) == 1.0f);

diff --git a/tests/test-roundl.c b/tests/test-roundl.c
index f06db8a..bdb8ddf 100644 (file)
--- a/tests/test-roundl.c
+++ b/tests/test-roundl.c
@@ -42,7 +42,9 @@ main ()
 
   /* Zero.  */
   ASSERT (roundl (0.0L) == 0.0L);
+  ASSERT (!signbit (roundl (0.0L)));
   ASSERT (roundl (minus_zerol) == 0.0L);
+  ASSERT (!!signbit (minus_zerol) == !!signbit (roundl (minus_zerol)));
   /* Positive numbers.  */
   ASSERT (roundl (0.3L) == 0.0L);
   ASSERT (roundl (0.5L) == 1.0L);

diff --git a/tests/test-trunc1.c b/tests/test-trunc1.c
index 69530b8..5587a41 100644 (file)
--- a/tests/test-trunc1.c
+++ b/tests/test-trunc1.c
@@ -33,7 +33,9 @@ main ()
 {
   /* Zero.  */
   ASSERT (trunc (0.0) == 0.0);
+  ASSERT (!signbit (trunc (0.0)));
   ASSERT (trunc (minus_zerod) == 0.0);
+  ASSERT (!!signbit (minus_zerod) == !!signbit (trunc (minus_zerod)));
   /* Positive numbers.  */
   ASSERT (trunc (0.3) == 0.0);
   ASSERT (trunc (0.7) == 0.0);

diff --git a/tests/test-truncf1.c b/tests/test-truncf1.c
index b5f48dd..6953c8b 100644 (file)
--- a/tests/test-truncf1.c
+++ b/tests/test-truncf1.c
@@ -33,7 +33,9 @@ main ()
 {
   /* Zero.  */
   ASSERT (truncf (0.0f) == 0.0f);
+  ASSERT (!signbit (truncf (0.0f)));
   ASSERT (truncf (minus_zerof) == 0.0f);
+  ASSERT (!!signbit (minus_zerof) == !!signbit (truncf (minus_zerof)));
   /* Positive numbers.  */
   ASSERT (truncf (0.3f) == 0.0f);
   ASSERT (truncf (0.7f) == 0.0f);

diff --git a/tests/test-truncl.c b/tests/test-truncl.c
index ab1f444..f2a9644 100644 (file)
--- a/tests/test-truncl.c
+++ b/tests/test-truncl.c
@@ -40,7 +40,9 @@ main ()
 
   /* Zero.  */
   ASSERT (truncl (0.0L) == 0.0L);
+  ASSERT (!signbit (truncl (0.0L)));
   ASSERT (truncl (minus_zerol) == 0.0L);
+  ASSERT (!!signbit (minus_zerol) == !!signbit (truncl (minus_zerol)));
   /* Positive numbers.  */
   ASSERT (truncl (0.3L) == 0.0L);
   ASSERT (truncl (0.7L) == 0.0L);