mirror of
https://https.git.savannah.gnu.org/git/gnulib.git
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Bruno Haible
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.
59 lines
2.1 KiB
C
59 lines
2.1 KiB
C
/* Test of sqrt*() 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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/* Randomized tests. */
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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]; /* 0.0 <= x <= 16.0 */
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DOUBLE y = SQRT (x);
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DOUBLE err = y * y - x;
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ASSERT (y >= L_(0.0));
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ASSERT (err > - L_(16.0) / TWO_MANT_DIG
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&& err < L_(16.0) / TWO_MANT_DIG);
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}
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for (int i = 0; i < countof (RANDOM) / 4; i++)
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for (int j = 0; j < countof (RANDOM) / 4; j++)
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{
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DOUBLE x = L_(16.0) * RANDOM[i]; /* 0.0 <= x <= 16.0 */
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DOUBLE y = L_(16.0) * RANDOM[j]; /* 0.0 <= y <= 16.0 */
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if (x > L_(0.0) && y > L_(0.0))
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{
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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 p = SQRT (x) * SQRT (y) * SQRT (z);
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ASSERT (p > L_(1.0) - L_(4.0) / TWO_MANT_DIG
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&& p < L_(1.0) + L_(4.0) / 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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