diff options
| -rw-r--r-- | ChangeLog | 1 | ||||
| -rw-r--r-- | math/test-misc.c | 19 |
2 files changed, 20 insertions, 0 deletions
@@ -1,5 +1,6 @@ 2000-12-03 Ulrich Drepper <drepper@redhat.com> + * math/test-misc.c (main): Test for pseudo denormal numbers on x86. * sysdeps/i386/fpu/fpclassify.c: New file. * sysdeps/i386/ldbl2mpn.c (__mpn_extract_long_double): Handle the diff --git a/math/test-misc.c b/math/test-misc.c index 04935dc26d..098695f73f 100644 --- a/math/test-misc.c +++ b/math/test-misc.c @@ -144,5 +144,24 @@ main (void) } #endif +#ifdef __i386__ + /* This is a test for the strange long doubles in x86 FPUs. */ + { + union + { + char b[10]; + long double d; + } u = + { .b = { 0, 0, 0, 0, 0, 0, 0, 0x80, 0, 0 } }; + + if (fpclassify (u.d) != FP_NORMAL) + { + printf ("fpclassify (0x00008000000000000000) failed: %d (%Lg)\n", + fpclassify (u.d), u.d); + result = 1; + } + } +#endif + return result; } |