+ /* Consider the current rounding mode, cf.
+ <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/float.h.html> */
+ if (FLT_ROUNDS == 1)
+ {
+ /* The current rounding mode is round-to-nearest
+ (the default in IEEE 754). */
+
+ /* Zero. */
+ ASSERT (rint (0.0) == 0.0);
+ ASSERT (rint (minus_zerod) == 0.0);
+ /* Positive numbers. */
+ ASSERT (rint (0.3) == 0.0);
+ ASSERT (rint (0.5) == 0.0); /* unlike round() */
+ ASSERT (rint (0.7) == 1.0);
+ ASSERT (rint (1.0) == 1.0);
+ ASSERT (rint (1.5) == 2.0);
+ ASSERT (rint (1.999) == 2.0);
+ ASSERT (rint (2.0) == 2.0);
+ ASSERT (rint (2.1) == 2.0);
+ ASSERT (rint (2.5) == 2.0); /* unlike round() */
+ ASSERT (rint (2.7) == 3.0);
+ ASSERT (rint (65535.999) == 65536.0);
+ ASSERT (rint (65536.0) == 65536.0);
+ ASSERT (rint (65536.001) == 65536.0);
+ ASSERT (rint (2.341e31) == 2.341e31);
+ /* Negative numbers. */
+ ASSERT (rint (-0.3) == 0.0);
+ ASSERT (rint (-0.5) == 0.0); /* unlike round() */
+ ASSERT (rint (-0.7) == -1.0);
+ ASSERT (rint (-1.0) == -1.0);
+ ASSERT (rint (-1.5) == -2.0);
+ ASSERT (rint (-1.999) == -2.0);
+ ASSERT (rint (-2.0) == -2.0);
+ ASSERT (rint (-2.1) == -2.0);
+ ASSERT (rint (-2.5) == -2.0); /* unlike round() */
+ ASSERT (rint (-2.7) == -3.0);
+ ASSERT (rint (-65535.999) == -65536.0);
+ ASSERT (rint (-65536.0) == -65536.0);
+ ASSERT (rint (-65536.001) == -65536.0);
+ ASSERT (rint (-2.341e31) == -2.341e31);
+
+ test_function ();
+
+ return 0;
+ }
+ else
+ {
+ fputs ("Skipping test: non-standard rounding mode\n", stderr);
+ return 77;
+ }