glibc

Commit Graph

Author	SHA1	Message	Date
Alan Modra	650ef4bd79	PowerPC floating point little-endian [4 of 15] http://sourceware.org/ml/libc-alpha/2013-08/msg00084.html Another batch of ieee854 macros and union replacement. These four files also have bugs fixed with this patch. The fact that the two doubles in an IBM long double may have different signs means that negation and absolute value operations can't just twiddle one sign bit as you can with ieee864 style extended double. fmodl, remainderl, erfl and erfcl all had errors of this type. erfl also returned +1 for large magnitude negative input where it should return -1. The hypotl error is innocuous since the value adjusted twice is only used as a flag. The e_hypotl.c tests for large "a" and small "b" are mutually exclusive because we've already exited when x/y > 2*120. That allows some further small simplifications. [BZ #15734], [BZ #15735] sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl): Rewrite all uses of ieee875 long double macros and unions. Simplify test for 0.0L. Correct \|x\|<\|y\| and \|x\|=\|y\| test. Use ldbl_extract_mantissa value for ix,iy exponents. Properly normalize after ldbl_extract_mantissa, and don't add hidden bit already handled. Don't treat low word of ieee854 mantissa like low word of IBM long double and mask off bit when testing for zero. * sysdeps/ieee754/ldbl-128ibm/e_hypotl.c (__ieee754_hypotl): Rewrite all uses of ieee875 long double macros and unions. Simplify tests for 0.0L and inf. Correct double adjustment of k. Delete dead code adjusting ha,hb. Simplify code setting kld. Delete two600 and two1022, instead use their values. Recognise that tests for large "a" and small "b" are mutually exclusive. Rename vars. Comment. * sysdeps/ieee754/ldbl-128ibm/e_remainderl.c (__ieee754_remainderl): Rewrite all uses of ieee875 long double macros and unions. Simplify test for 0.0L and nan. Correct negation. * sysdeps/ieee754/ldbl-128ibm/s_erfl.c (__erfl): Rewrite all uses of ieee875 long double macros and unions. Correct output for large magnitude x. Correct absolute value calculation. (__erfcl): Likewise. * math/libm-test.inc: Add tests for errors discovered in IBM long double versions of fmodl, remainderl, erfl and erfcl.	13 years ago
Alan Modra	1b6adf888d	PowerPC floating point little-endian [1 of 15] http://sourceware.org/ml/libc-alpha/2013-08/msg00081.html This is the first of a series of patches to ban ieee854_long_double and the ieee854_long_double macros when using IBM long double. union ieee854_long_double just isn't correct for IBM long double, especially when little-endian, and pretending it is OK has allowed a number of bugs to remain undetected in sysdeps/ieee754/ldbl-128ibm/. This changes the few places in generic code that use it. * stdio-common/printf_size.c (__printf_size): Don't use union ieee854_long_double in fpnum union. * stdio-common/printf_fphex.c (__printf_fphex): Likewise. Use signbit macro to retrieve sign from long double. * stdio-common/printf_fp.c (___printf_fp): Use signbit macro to retrieve sign from long double. * sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Adjust for fpnum change. * sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise. * sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise. * sysdeps/x86_64/fpu/printf_fphex.c: Likewise. * math/test-misc.c (main): Don't use union ieee854_long_double. ports/ * sysdeps/ia64/fpu/printf_fphex.c: Adjust for fpnum change.	13 years ago
Siddhesh Poyarekar	cfa3c8865f	New test cases for sin and cos for multiple precision fallback	13 years ago
Maciej W. Rozycki	95e7cf295e	Fix static-binary lazy FPU context allocation Long ago static startup did not parse the auxiliary vector and therefore could not get at any `AT_FPUCW' tag to check whether upon FPU context allocation the kernel would use a FPU control word setting different to that provided by the `__fpu_control' variable. Static startup therefore always initialized the FPU control word, forcing immediate FPU context allocation even for binaries that otherwise never used the FPU. As from GIT commit `f8f900ecb9` static startup supports parsing the auxiliary vector, so now it can avoid explicit initialization of the FPU control word, just as can dynamic startup, in the usual case where the setting written to the FPU control word would be the same as the kernel uses. This defers FPU context allocation until the binary itself actually pokes at the FPU. Note that the `AT_FPUCW' tag is usually absent from the auxiliary vector in which case _FPU_DEFAULT is assumed to be the kernel default.	13 years ago
Joseph Myers	ffa3cd7f1a	Fix lgammaf spurious underflow (bug 15427).	13 years ago
Joseph Myers	b7835e3223	Fix spurious jnf underflows (bug 14155).	13 years ago
Thomas Schwinge	f1cc4c8654	math: Additional type conversion tests These have helped me find and fix type conversion issues in QEMU's MIPS hardware emulation. While certainly glibc is not the best place for such tests, they're just an enhancement of tests already present.	13 years ago
Joseph Myers	8fe89494e6	Fix cexp (NaN + i0) (bug 15532).	13 years ago
Joseph Myers	acd06bb11f	Fix fdim handling of infinities (bug 15797).	13 years ago
Joseph Myers	c980f2f4fe	Fix cproj handling of (finite, NaN) arguments (bug 15531).	13 years ago
Andreas Schwab	ca0a6bc4c5	Fix cbrtl for ldbl-96	13 years ago
David S. Miller	f959cfd790	Annotate more cases of math bug 15319. * math/libm-test.inc (casin_test_data): Annotate more cases of missing underflows from atanl/atan2l due to bug 15319. (casinh_test_data): Likewise.	13 years ago
Joseph Myers	b8c792af85	Allow fesetround failures in math/test-misc.c if ROUNDING_TESTS fails.	13 years ago
Joseph Myers	c91e082525	Avoid spurious failures from <fenv.h> fallback functions (bug 15654).	13 years ago
Joseph Myers	1a8463176c	Use math-tests.h more in math/test-misc.	13 years ago
Joseph Myers	8fc75e6fb7	Add another fma test.	13 years ago
Joseph Myers	94f2c07669	Make more libm tests condition exceptions tests with math-tests.h.	13 years ago
Joseph Myers	f1d73d30df	Add exception information to math-tests.h and use it in libm-test.inc.	13 years ago
Joseph Myers	0efa6f8b99	Add rounding mode information to math-tests.h and use it in libm-test.inc.	13 years ago
Joseph Myers	9c84384cc1	Remove trailing whitespace.	13 years ago
Carlos O'Donell	8b0ccb2d7f	BZ #15536 : Fix ulp for 128-bit IBM long double. In 128-bit IBM long double the precision of the type decreases as you approach subnormal numbers, equaling that of a double for subnormal numbers. Therefore adjust the computation in ulp to use 2^(MIN_EXP - MANT_DIG) which is correct for FP_SUBNORMAL for all types.	13 years ago
Joseph Myers	fab7ce3f5b	Link extra-libs consistently with libc and ld.so.	13 years ago
Joseph Myers	0323d08657	Fix ldbl-96 hypotl of subnormals (bug 15529).	13 years ago
Joseph Myers	dd4259b9f7	Test drem and pow10 in libm-test.inc.	13 years ago
Joseph Myers	4f8dfe270b	Use same tests for isfinite/finite, lgamma/gamma.	13 years ago
Carlos O'Donell	e96e37676f	Correctly compute ulp near zero. The current value used for ulp near zero is wrong, and this commit fixes it such that ulp(0) is the smallest subnormal value nearest to zero, which makes the most sense for testing values near zero. Note that this is not what Java does; they use the nearest normal value, which is less accurate than what we want for glibc. Note that there is no correct implementation of ulp since there is no strict mathmatical definition that is accepted by all groups using IEEE 754. Previously with the large ulp values near zero there were tests that previously passed, but were in fact billions of ulp away from the precise answer. With this commit we now need to disable one of the cpow tests which is revealed to be inaccurate (bug 14473). --- 2013-05-24 Carlos O'Donell <carlos@redhat.com> * math/libm-test.inc (MAX_EXP): Define. (ULPDIFF): Define. (ulp): New function. (check_float_internal): Use ULPDIFF. (cpow_test): Disable failing test. (check_ulp): Test ulp() implemetnation. (main): Call check_ulp before starting tests.	13 years ago
Joseph Myers	e8bdba36c5	Remove libm-test START_DATA and END_DATA.	13 years ago
Joseph Myers	b679a606ca	Make libm-test START and END into ordinary macros.	13 years ago
Joseph Myers	351fe55087	Don't include function names in test data in generated libm-test.c.	13 years ago
Joseph Myers	b50a71810b	Don't include expected results in libm-test test names.	13 years ago
Joseph Myers	db62a90753	Handle sincos with generic libm-test logic.	13 years ago
Joseph Myers	f16cc3eb81	Simplify gen-libm-test.pl handling of tests with extra outputs.	13 years ago
Joseph Myers	2ee094ff75	Don't disable CMPLXL macro for __NO_LONG_DOUBLE_MATH (bug 15488).	13 years ago
Joseph Myers	3779b5b64a	Make libm-test look up ulps by name at runtime.	13 years ago
Joseph Myers	bb38759d6d	Fix remainder exceptions and directed-rounding results (bugs 15480, 15485).	13 years ago
Joseph Myers	a00bdcf0e0	Simplify libm-test extra-output initialization.	13 years ago
Joseph Myers	de407f79a2	Don't handle ulps for integer tests in libm-test.inc.	13 years ago
Joseph Myers	8269107fe6	Test more cases of "inexact" exceptions in libm-test.inc.	13 years ago
Joseph Myers	c58b274f01	Test for errno setting in more pole error cases.	13 years ago
Joseph Myers	0ab349044b	Remove ENOSYS tests in libm-test.inc.	13 years ago
Joseph Myers	323e5cb792	Remove libm-test support for TEST_* inside functions.	13 years ago
Joseph Myers	8c75f67421	Convert TEST_extra tests from code to data.	13 years ago
Richard Henderson	e6e49e59c1	De-stringify constants in math/atest-exp2.c.	13 years ago
Joseph Myers	105a07dfc0	Support testing "inexact" exceptions in libm-test.inc.	13 years ago
Joseph Myers	e9eee333b9	Test for errno setting in more overflow error cases.	13 years ago
Joseph Myers	1c38ff73fd	Convert TEST_cc_c tests from code to data.	13 years ago
Joseph Myers	15c7c18dc6	Convert TEST_f_L tests from code to data.	13 years ago
Peter Collingbourne	f137ff1383	Remove const attribute on get_log2 This function is not const, as it can modify log2_m and log2_m_inited.	13 years ago
Joseph Myers	3608cb241e	Convert TEST_f_l tests from code to data.	13 years ago
Joseph Myers	b861c6c4c9	Consistently use TEST_f_L in tests of llrint and llround.	13 years ago

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718 Commits (c7738d0822fd34e95ebf01ce8fa8ea397bc4843d)