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glibc/math/test-math-finite.h

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Run libm-test tests for finite-math-only functions. This patch arranges for the libm-test tests to be run for the finite-math-only function variants, in addition to the existing runs for out-of-line and bits/mathinline.h inline variants. gen-libm-test.pl is made to add a flag to all tests with non-finite inputs or outputs so that they can be skipped at runtime when the finite-math-only variants are being tested (skipping is for all rounding modes; that is, -ffinite-math-only is being treated as excluding overflow cases even when the rounding mode is such that the overflowed result is finite). errno setting is not tested for these variants (in general they don't set it, and it's implementation-defined in ISO C whether it's set on underflow, with the glibc definition being that it may not be for -ffinite-math-only; other cases where errno would normally be expected to be set are mostly excluded as having non-finite or overflowing arguments or results). As with the inline function tests, these ones are built with -D__FINITE_MATH_ONLY=1 to select the function variants, rather than -ffinite-math-only. Use of -ffinite-math-only would not be suitable for these tests because it would also affect libm-test.inc code that e.g. tests whether results are infinities or NaNs - if these function variants have bugs that incorrectly produce such results, we want them to show up in the tests, which means the compiler should not be optimizing the tests on the basis of results being finite. The finite-math-only functions share the same ulps settings as the main out-of-line functions. These interfaces were one significant group of untested ABIs listed at <https://sourceware.org/ml/libc-alpha/2013-07/msg00386.html>. I haven't rerun the script to list untested interfaces, but I expect that the vast bulk of interfaces there are still untested and could do with testcases being added (or, if applicable, being made compat symbols; in general, most symbols not starting '_' are safe bets to add tests for, while _* need more investigation of what the actual public API is, if any). I'd like to encourage people to help reduce the accumulation of untested interfaces by adding more tests. Tested for x86_64 and x86. Given my recent lgamma/gamma and log* fixes, the new tests pass (before those fixes, the new tests showed up those bugs, so illustrating the practical utility of having tests for these function variants). * math/libm-test.inc (NON_FINITE): New macro. (enable_test): Do not run tests flagged NON_FINITE if TEST_FINITE. * math/gen-libm-test.pl (show_exceptions): Add argument $non_finite. (parse_args): Update call to show_exceptions. * math/test-math-finite.h: New file. * math/test-math-no-finite.h: Likewise. * math/test-double-finite.c: Likewise. * math/test-float-finite.c: Likewise. * math/test-ldouble-finite.c: Likewise. * math/test-double.c: Include "test-math-no-finite.h". * math/test-float.c: Include "test-math-no-finite.h". * math/test-ldouble.c: Include "test-math-no-finite.h". * math/test-math-inline.h (TEST_FINITE): New macro. * math/test-math-vector.h (TEST_FINITE): Likewise. * math/Makefile (test-longdouble-yes): Add test-ldouble-finite. (libm-tests): Add test-float-finite and test-double-finite. ($(objpfx)test-float-finite.o): New dependency on $(objpfx)libm-test.stmp. ($(objpfx)test-double-finite.o): Likewise. ($(objpfx)test-ldouble-finite.o): Likewise. (libm-test-no-inline-cflags): New variable. (libm-test-finite-cflags): Likewise. (CFLAGS-test-float-finite.c): Likewise. (CFLAGS-test-double-finite.c): Likewise. (CFLAGS-test-ldouble-finite.c): Likewise. (CFLAGS-test-float.c): Use $(libm-test-no-inline-cflags). (CFLAGS-test-double.c): Likewise. (CFLAGS-test-ldouble.c): Likewise.
2015-11-06 00:28:16 +01:00
/* Common definitions for libm tests for finite-math-only.
Update copyright dates with scripts/update-copyrights. * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
2019-01-01 01:11:28 +01:00
Copyright (C) 2015-2019 Free Software Foundation, Inc.
Run libm-test tests for finite-math-only functions. This patch arranges for the libm-test tests to be run for the finite-math-only function variants, in addition to the existing runs for out-of-line and bits/mathinline.h inline variants. gen-libm-test.pl is made to add a flag to all tests with non-finite inputs or outputs so that they can be skipped at runtime when the finite-math-only variants are being tested (skipping is for all rounding modes; that is, -ffinite-math-only is being treated as excluding overflow cases even when the rounding mode is such that the overflowed result is finite). errno setting is not tested for these variants (in general they don't set it, and it's implementation-defined in ISO C whether it's set on underflow, with the glibc definition being that it may not be for -ffinite-math-only; other cases where errno would normally be expected to be set are mostly excluded as having non-finite or overflowing arguments or results). As with the inline function tests, these ones are built with -D__FINITE_MATH_ONLY=1 to select the function variants, rather than -ffinite-math-only. Use of -ffinite-math-only would not be suitable for these tests because it would also affect libm-test.inc code that e.g. tests whether results are infinities or NaNs - if these function variants have bugs that incorrectly produce such results, we want them to show up in the tests, which means the compiler should not be optimizing the tests on the basis of results being finite. The finite-math-only functions share the same ulps settings as the main out-of-line functions. These interfaces were one significant group of untested ABIs listed at <https://sourceware.org/ml/libc-alpha/2013-07/msg00386.html>. I haven't rerun the script to list untested interfaces, but I expect that the vast bulk of interfaces there are still untested and could do with testcases being added (or, if applicable, being made compat symbols; in general, most symbols not starting '_' are safe bets to add tests for, while _* need more investigation of what the actual public API is, if any). I'd like to encourage people to help reduce the accumulation of untested interfaces by adding more tests. Tested for x86_64 and x86. Given my recent lgamma/gamma and log* fixes, the new tests pass (before those fixes, the new tests showed up those bugs, so illustrating the practical utility of having tests for these function variants). * math/libm-test.inc (NON_FINITE): New macro. (enable_test): Do not run tests flagged NON_FINITE if TEST_FINITE. * math/gen-libm-test.pl (show_exceptions): Add argument $non_finite. (parse_args): Update call to show_exceptions. * math/test-math-finite.h: New file. * math/test-math-no-finite.h: Likewise. * math/test-double-finite.c: Likewise. * math/test-float-finite.c: Likewise. * math/test-ldouble-finite.c: Likewise. * math/test-double.c: Include "test-math-no-finite.h". * math/test-float.c: Include "test-math-no-finite.h". * math/test-ldouble.c: Include "test-math-no-finite.h". * math/test-math-inline.h (TEST_FINITE): New macro. * math/test-math-vector.h (TEST_FINITE): Likewise. * math/Makefile (test-longdouble-yes): Add test-ldouble-finite. (libm-tests): Add test-float-finite and test-double-finite. ($(objpfx)test-float-finite.o): New dependency on $(objpfx)libm-test.stmp. ($(objpfx)test-double-finite.o): Likewise. ($(objpfx)test-ldouble-finite.o): Likewise. (libm-test-no-inline-cflags): New variable. (libm-test-finite-cflags): Likewise. (CFLAGS-test-float-finite.c): Likewise. (CFLAGS-test-double-finite.c): Likewise. (CFLAGS-test-ldouble-finite.c): Likewise. (CFLAGS-test-float.c): Use $(libm-test-no-inline-cflags). (CFLAGS-test-double.c): Likewise. (CFLAGS-test-ldouble.c): Likewise.
2015-11-06 00:28:16 +01:00
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#define TEST_FINITE 1
#define TEST_ERRNO 0
Clean up libm vector tests exception test disabling. The libm vector tests disable tests of exception raising via defining macros EXCEPTION_TESTS_float and EXCEPTION_TESTS_double to 0 in the headers for individual vector lengths. As EXCEPTION_TESTS is used in code in libm-test-driver.c that is otherwise ready to be built only once per type, this is not a good idea; it's better to define TEST_EXCEPTIONS appropriately so that flag_test_exceptions then gets initialized appropriately. Furthermore, it's better to do this just once, in test-math-vector.h, since there is no actual dependence on the vector length or type. This patch duly makes that change. Tested for x86_64. * math/test-math-finite.h (TEST_EXCEPTIONS): New macro. * math/test-math-no-finite.h (TEST_EXCEPTIONS): Likewise. * math/test-math-vector.h (TEST_EXCEPTIONS): Likewise. * math/test-math-no-inline.h (TEST_EXCEPTIONS): Remove macro. * math/test-double-vlen2.h (EXCEPTION_TESTS_double): Likewise. * math/test-double-vlen4.h (EXCEPTION_TESTS_double): Likewise. * math/test-double-vlen8.h (EXCEPTION_TESTS_double): Likewise. * math/test-float-vlen4.h (EXCEPTION_TESTS_float): Likewise. * math/test-float-vlen8.h (EXCEPTION_TESTS_float): Likewise. * math/test-float-vlen16.h (EXCEPTION_TESTS_float): Likewise.
2017-02-08 00:06:19 +01:00
#define TEST_EXCEPTIONS 1