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| author | Alan Modra <amodra@gmail.com> | 2014-04-02 13:46:19 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2014-04-02 13:46:19 +1030 |
| commit | b0abbc21034f0e5edc49023d8fda0616173faf17 (patch) | |
| tree | 0fed607adb9e4140a33d412fe9d6ec187fd403ac /math | |
| parent | af6b17973cbc07ac06cfb40eeab5cc2391fb489a (diff) | |
| download | glibc-b0abbc21034f0e5edc49023d8fda0616173faf17.tar.gz glibc-b0abbc21034f0e5edc49023d8fda0616173faf17.tar.xz glibc-b0abbc21034f0e5edc49023d8fda0616173faf17.zip | |
Correct IBM long double nextafterl.
Fix for values near a power of two, and some tidies. [BZ #16739] * sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c (__nextafterl): Correct output when value is near a power of two. Use int64_t for lx and remove casts. Use decimal rather than hex exponent constants. Don't use long double multiplication when double will suffice. * math/libm-test.inc (nextafter_test_data): Add tests. * NEWS: Add 16739 and 16786 to bug list.
Diffstat (limited to 'math')
| -rw-r--r-- | math/libm-test.inc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc index 19194f63e9..967b679e94 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -8302,6 +8302,14 @@ static const struct test_ff_f_data nextafter_test_data[] = // XXX Enable once gcc is fixed. //TEST_ff_f (nextafter, 0x0.00000040000000000000p-16385L, -0.1L, 0x0.0000003ffffffff00000p-16385L), #endif +#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 106 + TEST_ff_f (nextafter, 1.0L, -10.0L, 1.0L-0x1p-106L, NO_EXCEPTION), + TEST_ff_f (nextafter, 1.0L, 10.0L, 1.0L+0x1p-105L, NO_EXCEPTION), + TEST_ff_f (nextafter, 1.0L-0x1p-106L, 10.0L, 1.0L, NO_EXCEPTION), + TEST_ff_f (nextafter, -1.0L, -10.0L, -1.0L-0x1p-105L, NO_EXCEPTION), + TEST_ff_f (nextafter, -1.0L, 10.0L, -1.0L+0x1p-106L, NO_EXCEPTION), + TEST_ff_f (nextafter, -1.0L+0x1p-106L, -10.0L, -1.0L, NO_EXCEPTION), +#endif /* XXX We need the hexadecimal FP number representation here for further tests. */ |