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f1d55e9f84
Done through sed -e 's/SIZEOF \([(][^()]*[)]\)/countof \1/g' * lib/boot-time.c: Include <stdcountof.h>. * lib/readutmp.c: Include <stdcountof.h>. * lib/boot-time-aux.h (get_linux_boot_time_fallback, get_openbsd_boot_time, get_windows_boot_time): Use countof. * lib/duplocale.c: Include <stdcountof.h>. (SIZEOF): Remove macro. (duplocale): Use countof instead. * lib/fatal-signal.c: Include <stdcountof.h>. (SIZEOF): Remove macro. (num_fatal_signals, actions_allocated): Use countof instead. * lib/iconv_open.c: Include <stdcountof.h>. (SIZEOF): Remove macro. (rpl_iconv_open): Use countof instead. * lib/term-style-control.c: Include <stdcountof.h>. (SIZEOF): Remove macro. (num_job_control_signals): Use countof instead. * lib/uniconv/u16-conv-to-enc.c: Include <stdcountof.h>. (SIZEOF): Remove macro. * lib/uniconv/u32-conv-to-enc.c: Include <stdcountof.h>. (SIZEOF): Remove macro. * lib/uniconv/u-conv-to-enc.h (FUNC): Use countof instead. * lib/uniconv/u16-strconv-to-enc.c: Include <stdcountof.h>. (SIZEOF): Remove macro. * lib/uniconv/u32-strconv-to-enc.c: Include <stdcountof.h>. (SIZEOF): Remove macro. * lib/uniconv/u-strconv-to-enc.h (FUNC): Use countof instead. * lib/uniname/uniname.c: Include <stdcountof.h>. (SIZEOF): Remove macro. (unicode_name_word, unicode_name_word_lookup, unicode_code_to_index, unicode_index_to_code, unicode_character_name, unicode_name_character): Use countof instead. * lib/uniwidth/width.c: Include <stdcountof.h>. (SIZEOF): Remove macro. (uc_width): Use countof instead. * lib/wait-process.c: Include <stdcountof.h>. (SIZEOF): Remove macro. (slaves_allocated): Use countof instead. * lib/gen-uni-tables.c (countof): Renamed from SIZEOF. * modules/boot-time (Depends-on): Add stdcountof-h. * modules/readutmp (Depends-on): Likewise. * modules/duplocale (Depends-on): Likewise. * modules/fatal-signal (Depends-on): Likewise. * modules/iconv_open (Depends-on): Likewise. * modules/term-style-control (Depends-on): Likewise. * modules/uniconv/u16-conv-to-enc (Depends-on): Likewise. * modules/uniconv/u32-conv-to-enc (Depends-on): Likewise. * modules/uniconv/u16-strconv-to-enc (Depends-on): Likewise. * modules/uniconv/u32-strconv-to-enc (Depends-on): Likewise. * modules/uniname/uniname (Depends-on): Likewise. * modules/uniwidth/width (Depends-on): Likewise. * modules/wait-process (Depends-on): Likewise. * tests/macros.h (SIZEOF): Remove macro. * tests/**/*.[hc]: Use countof instead of SIZEOF. Include <stdcountof.h> as needed. * modules/**/*-tests (Depends-on): Add stdcountof-h if needed.
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/* Test of log10*() function family.
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Copyright (C) 2012-2026 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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static void
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test_function (void)
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{
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const DOUBLE TWO_MANT_DIG =
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/* Assume MANT_DIG <= 5 * 31.
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Use the identity
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n = floor(n/5) + floor((n+1)/5) + ... + floor((n+4)/5). */
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(DOUBLE) (1U << ((MANT_DIG - 1) / 5))
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* (DOUBLE) (1U << ((MANT_DIG - 1 + 1) / 5))
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* (DOUBLE) (1U << ((MANT_DIG - 1 + 2) / 5))
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* (DOUBLE) (1U << ((MANT_DIG - 1 + 3) / 5))
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* (DOUBLE) (1U << ((MANT_DIG - 1 + 4) / 5));
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/* Pole. */
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{
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DOUBLE z = LOG10 (L_(0.0));
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ASSERT (z == - HUGEVAL);
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}
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{
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DOUBLE z = LOG10 (MINUS_ZERO);
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ASSERT (z == - HUGEVAL);
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}
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/* Randomized tests. */
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{
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/* Error bound, in ulps. */
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const DOUBLE err_bound =
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(sizeof (DOUBLE) > sizeof (double) ?
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#if defined __i386__ && defined __FreeBSD__
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/* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
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precision in the compiler but 64 bits of precision at runtime. See
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<https://lists.gnu.org/r/bug-gnulib/2008-07/msg00063.html>.
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The compiler has truncated all 'long double' literals in log10l.c to
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53 bits of precision. */
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L_(18.0)
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#else
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L_(3.0)
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#endif
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: L_(3.0));
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for (int i = 0; i < countof (RANDOM); i++)
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{
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DOUBLE x = L_(16.0) * RANDOM[i] + L_(1.0); /* 1.0 <= x <= 17.0 */
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DOUBLE y = LOG10 (x);
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DOUBLE z = LOG10 (L_(1.0) / x);
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DOUBLE err = y + z;
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ASSERT (y >= L_(0.0));
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ASSERT (z <= L_(0.0));
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ASSERT (err > - err_bound / TWO_MANT_DIG
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&& err < err_bound / TWO_MANT_DIG);
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}
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}
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{
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/* Error bound, in ulps. */
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const DOUBLE err_bound =
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(sizeof (DOUBLE) > sizeof (double) ?
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#if defined __i386__ && defined __FreeBSD__
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/* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
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precision in the compiler but 64 bits of precision at runtime. See
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<https://lists.gnu.org/r/bug-gnulib/2008-07/msg00063.html>.
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The compiler has truncated all 'long double' literals in log10l.c to
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53 bits of precision. */
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L_(38.0)
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#else
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L_(5.0)
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#endif
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: L_(5.0));
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for (int i = 0; i < countof (RANDOM) / 5; i++)
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for (int j = 0; j < countof (RANDOM) / 5; j++)
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{
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DOUBLE x = L_(17.0) / (L_(16.0) - L_(15.0) * RANDOM[i]) - L_(1.0);
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DOUBLE y = L_(17.0) / (L_(16.0) - L_(15.0) * RANDOM[j]) - L_(1.0);
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/* 1/16 <= x,y <= 16 */
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DOUBLE z = L_(1.0) / (x * y);
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/* Approximately x * y * z = 1. */
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DOUBLE err = LOG10 (x) + LOG10 (y) + LOG10 (z);
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ASSERT (err > - err_bound / TWO_MANT_DIG
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&& err < err_bound / TWO_MANT_DIG);
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}
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}
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}
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volatile DOUBLE x;
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DOUBLE y;
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