From nobody Sun Nov 30 19:22:14 2025 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4dKH3W4bdbz6Jh45 for ; Sun, 30 Nov 2025 19:22:15 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R12" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4dKH3W0tFFz3gWj for ; Sun, 30 Nov 2025 19:22:15 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1764530535; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=fZ8Qaj60RmT2Uo5Eevra2MVgvsadf3NIvP/35sZd+pU=; b=cFxa3QT/JuQemEe/Gr6d6o+bF19eWnVSFuGk7Gu+7Yjz6Ui+Z4Y6IwrXLlQxgsEykC1y3o apaEl4+Vzoins1cOHXr7aNRUhqcll1aIMVgE2j8MP08oXuu5SfROyPuoaRpxL71q3XKI9b jhbAG/NklPbz1p8whxmvbWugOQX3wMb7j6e7T0tdBYHRZr0GiZ8rgBZwbYcoc9hIMU/nlX WpQVbZMKZh+6pSkFKBLJQTQYrJmbQsjYf2VX1rablq/RbWqdKb1ECa09U3N7Y09RJwwouK PPq2/Ti/+gwkvBvrfyGoM3FTyaT7IUiAgaGOSnAqpijplcTDQH282wy4YRVg2g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1764530535; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=fZ8Qaj60RmT2Uo5Eevra2MVgvsadf3NIvP/35sZd+pU=; b=yNsW6XTU9u8gQytt+kGeZvW6QTYOaXA3a7PjK+5ltE8qQvpmmd19mxNKhKafWUej1IhLUe eQPDthDkJLm6eo/40AybNJyFdsAG4ahRcx5z3VccOmZDfO996CCWdLCkLK/BS2eZhkHT69 m9l+4+QPdOZpcSGmM0/6NebXjDFIoJsIcfidtHGnjGemGq4OqgPaZtuPoMVYxvOCrXlIHY Rb7RmiuMuYaOXv/A5lsfq7Rf/FLotuyMXvWhnaBj1hn/8Qj4UPoZ/JQnG39PlGV8C943P+ /3NxoyVAXwM6q/HzDH/DJp9RpSfcfTS7JI0wFCTv8yH3bY3guQJxSLAZWjB7lA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1764530535; a=rsa-sha256; cv=none; b=ZWiG86hdp8Y3E9yQaZkCgPmD/F1/+0JlNU5b9su6P22a+5rZOOxYnQogUVKb2EnRDrmSXW NWUr9/GRGF5tOsNLs6Exdg2sN3GMPc/twb5vijLeyJT5kfI7AQUDqlQ2wVKFRpfff35ChK rt4xCKme9JZMf455DQ1EHnKbwAPBK2svfD69YxZry5IIH3KsBUonmjnAgt3U4JeDra0qWs AuCIHnzDlQJf+TONyyEiIak0oNq/1eqDIWiKiw/S3FBWdmESZ294nzl6e53cMIGjH0uNXi ZoKX4jMKggxQoHZ+NO7t00XBLSYRIAMcz1NKe5TWJ/YroGoTWzxde1YbQc9Q5w== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4dKH3W037szp5f for ; Sun, 30 Nov 2025 19:22:15 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 26e27 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Sun, 30 Nov 2025 19:22:14 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Robert Clausecker Subject: git: 2fb8cbc6ef1b - main - libc/tests: add stdbit test framework and unit tests List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: fuz X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 2fb8cbc6ef1b3cc6cd60e5db07f8305623f9b044 Auto-Submitted: auto-generated Date: Sun, 30 Nov 2025 19:22:14 +0000 Message-Id: <692c9966.26e27.70621b5b@gitrepo.freebsd.org> The branch main has been updated by fuz: URL: https://cgit.FreeBSD.org/src/commit/?id=2fb8cbc6ef1b3cc6cd60e5db07f8305623f9b044 commit 2fb8cbc6ef1b3cc6cd60e5db07f8305623f9b044 Author: Robert Clausecker AuthorDate: 2025-11-18 17:33:12 +0000 Commit: Robert Clausecker CommitDate: 2025-11-30 19:21:52 +0000 libc/tests: add stdbit test framework and unit tests This adds unit tests for all 70 functions in . I'm sorry for the test framework, but it makes it so I don't have to write 70 unit tests by hand. Reviewed by: adrian, des Approved by: markj (mentor) MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D53660 --- etc/mtree/BSD.tests.dist | 2 + lib/libc/tests/Makefile | 1 + lib/libc/tests/stdbit/Makefile | 19 +++++ lib/libc/tests/stdbit/stdbit-test-framework.c | 80 ++++++++++++++++++++++ lib/libc/tests/stdbit/stdbit-test-kernel.c | 68 ++++++++++++++++++ lib/libc/tests/stdbit/stdc_bit_ceil_test.c | 20 ++++++ lib/libc/tests/stdbit/stdc_bit_floor_test.c | 25 +++++++ lib/libc/tests/stdbit/stdc_bit_width_test.c | 22 ++++++ lib/libc/tests/stdbit/stdc_count_ones_test.c | 22 ++++++ lib/libc/tests/stdbit/stdc_count_zeros_test.c | 23 +++++++ .../tests/stdbit/stdc_first_leading_one_test.c | 29 ++++++++ .../tests/stdbit/stdc_first_leading_zero_test.c | 30 ++++++++ .../tests/stdbit/stdc_first_trailing_one_test.c | 26 +++++++ .../tests/stdbit/stdc_first_trailing_zero_test.c | 27 ++++++++ lib/libc/tests/stdbit/stdc_has_single_bit_test.c | 21 ++++++ lib/libc/tests/stdbit/stdc_leading_ones_test.c | 26 +++++++ lib/libc/tests/stdbit/stdc_leading_zeros_test.c | 26 +++++++ lib/libc/tests/stdbit/stdc_trailing_ones_test.c | 23 +++++++ lib/libc/tests/stdbit/stdc_trailing_zeros_test.c | 23 +++++++ 19 files changed, 513 insertions(+) diff --git a/etc/mtree/BSD.tests.dist b/etc/mtree/BSD.tests.dist index 0380b925e64c..e2b8c8ede325 100644 --- a/etc/mtree/BSD.tests.dist +++ b/etc/mtree/BSD.tests.dist @@ -382,6 +382,8 @@ .. ssp .. + stdbit + .. stdio .. stdlib diff --git a/lib/libc/tests/Makefile b/lib/libc/tests/Makefile index 975c895770ee..ae8e0e937676 100644 --- a/lib/libc/tests/Makefile +++ b/lib/libc/tests/Makefile @@ -14,6 +14,7 @@ TESTS_SUBDIRS+= resolv TESTS_SUBDIRS+= rpc TESTS_SUBDIRS+= secure TESTS_SUBDIRS+= setjmp +TESTS_SUBDIRS+= stdbit TESTS_SUBDIRS+= stdio TESTS_SUBDIRS+= stdlib TESTS_SUBDIRS+= stdtime diff --git a/lib/libc/tests/stdbit/Makefile b/lib/libc/tests/stdbit/Makefile new file mode 100644 index 000000000000..37450056007a --- /dev/null +++ b/lib/libc/tests/stdbit/Makefile @@ -0,0 +1,19 @@ +# ensure libc functions are tested, not clang's builtins +CFLAGS+= -fno-builtin + +ATF_TESTS_C+= stdc_bit_ceil_test \ + stdc_bit_floor_test \ + stdc_bit_width_test \ + stdc_count_ones_test \ + stdc_count_zeros_test \ + stdc_first_leading_one_test \ + stdc_first_leading_zero_test \ + stdc_first_trailing_one_test \ + stdc_first_trailing_zero_test \ + stdc_has_single_bit_test \ + stdc_leading_ones_test \ + stdc_leading_zeros_test \ + stdc_trailing_ones_test \ + stdc_trailing_zeros_test + +.include diff --git a/lib/libc/tests/stdbit/stdbit-test-framework.c b/lib/libc/tests/stdbit/stdbit-test-framework.c new file mode 100644 index 000000000000..368b38fb4745 --- /dev/null +++ b/lib/libc/tests/stdbit/stdbit-test-framework.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +/* + * Test framework for stdbit functions. + * Requires the following macros to be defined: + * + * FUNCSTEM -- name of the function without type suffix + * MKREFFUNC(name, type) -- macro to generate a reference + * implementation of the function as a static function + * named name with give argument type. + */ + +#include +#include +#include +#include +#include + +#define ATF_TC_WITHOUT_HEAD1(stem, suffix) ATF_TC_WITHOUT_HEAD2(__CONCAT(stem, suffix)) +#define ATF_TC_WITHOUT_HEAD2(case) ATF_TC_WITHOUT_HEAD(case) +#define ATF_TC_BODY1(stem, suffix, tc) ATF_TC_BODY2(__CONCAT(stem, suffix), tc) +#define ATF_TC_BODY2(case, tc) ATF_TC_BODY(case, tc) + +#define SUFFIX _uc +#define TYPE unsigned char +#define TYPE_WIDTH UCHAR_WIDTH +#include "stdbit-test-kernel.c" +#undef TYPE_WIDTH +#undef TYPE +#undef SUFFIX + +#define SUFFIX _us +#define TYPE unsigned short +#define TYPE_WIDTH USHRT_WIDTH +#include "stdbit-test-kernel.c" +#undef TYPE_WIDTH +#undef TYPE +#undef SUFFIX + +#define SUFFIX _ui +#define TYPE unsigned int +#define TYPE_WIDTH UINT_WIDTH +#include "stdbit-test-kernel.c" +#undef TYPE_WIDTH +#undef TYPE +#undef SUFFIX + +#define SUFFIX _ul +#define TYPE unsigned long +#define TYPE_WIDTH ULONG_WIDTH +#include "stdbit-test-kernel.c" +#undef TYPE_WIDTH +#undef TYPE +#undef SUFFIX + +#define SUFFIX _ull +#define TYPE unsigned long long +#define TYPE_WIDTH ULLONG_WIDTH +#include "stdbit-test-kernel.c" +#undef TYPE_WIDTH +#undef TYPE +#undef SUFFIX + +#define ADD_CASE(stem, suffix) ADD_CASE1(__CONCAT(stem, suffix)) +#define ADD_CASE1(case) ATF_TP_ADD_TC(tp, case) + +ATF_TP_ADD_TCS(tp) +{ + ADD_CASE(FUNCSTEM, _uc); + ADD_CASE(FUNCSTEM, _us); + ADD_CASE(FUNCSTEM, _ui); + ADD_CASE(FUNCSTEM, _ul); + ADD_CASE(FUNCSTEM, _ull); + + return (atf_no_error()); +} diff --git a/lib/libc/tests/stdbit/stdbit-test-kernel.c b/lib/libc/tests/stdbit/stdbit-test-kernel.c new file mode 100644 index 000000000000..d584e391ff6f --- /dev/null +++ b/lib/libc/tests/stdbit/stdbit-test-kernel.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +/* + * test kernel for stdbit functions. + * Requires the following macros to be defined: + * + * FUNCSTEM -- stem of the function name + * SUFFIX -- type suffic + * TYPE -- argument type + * MKREFFUNC(ref, type) -- reference function builder + */ + +#define FUNC __CONCAT(FUNCSTEM, SUFFIX) +#define REF __CONCAT(FUNCSTEM, __CONCAT(SUFFIX, _ref)) + +MKREFFUNC(REF, TYPE) + +ATF_TC_WITHOUT_HEAD1(FUNCSTEM, SUFFIX); +ATF_TC_BODY1(FUNCSTEM, SUFFIX, tc) +{ + uintmax_t has, want; + size_t i, j; + TYPE value; + + /* test all single-bit patterns */ + for (i = 0; i < TYPE_WIDTH; i++) { + value = (TYPE)1 << i; + has = FUNC(value); + want = REF(value); + ATF_CHECK_EQ_MSG(has, want, "%s(%#jx) == %#jx != %#jx == %s(%#jx)", + __XSTRING(FUNC), (uintmax_t)value, has, want, __XSTRING(REF), (uintmax_t)value); + } + + /* test all double-bit patterns */ + for (i = 0; i < TYPE_WIDTH; i++) { + for (j = 0; j < i; j++) { + value = (TYPE)1 << i | (TYPE)1 << j; + has = FUNC(value); + want = REF(value); + ATF_CHECK_EQ_MSG(has, want, "%s(%#jx) == %#jx != %#jx == %s(%#jx)", + __XSTRING(FUNC), (uintmax_t)value, has, want, __XSTRING(REF), (uintmax_t)value); + } + } + + /* test all barber-pole patterns */ + value = ~(TYPE)0; + for (i = 0; i < TYPE_WIDTH; i++) { + has = FUNC(value); + want = REF(value); + ATF_CHECK_EQ_MSG(has, want, "%s(%#jx) == %#jx != %#jx == %s(%#jx)", + __XSTRING(FUNC), (uintmax_t)value, has, want, __XSTRING(REF), (uintmax_t)value); + + value = ~value; + has = FUNC(value); + want = REF(value); + ATF_CHECK_EQ_MSG(has, want, "%s(%#jx) == %#jx != %#jx == %s(%#jx)", + __XSTRING(FUNC), (uintmax_t)value, has, want, __XSTRING(REF), (uintmax_t)value); + + value = ~value << 1; + } +} + +#undef REF +#undef FUNC diff --git a/lib/libc/tests/stdbit/stdc_bit_ceil_test.c b/lib/libc/tests/stdbit/stdc_bit_ceil_test.c new file mode 100644 index 000000000000..0495da55c5d9 --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_bit_ceil_test.c @@ -0,0 +1,20 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_bit_ceil +#define MKREFFUNC(name, type) \ + static type \ + name(type value) \ + { \ + type ceil = 1; \ + \ + while (ceil < value && ceil != 0) \ + ceil <<= 1; \ + \ + return (ceil); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_bit_floor_test.c b/lib/libc/tests/stdbit/stdc_bit_floor_test.c new file mode 100644 index 000000000000..a2c5b5f7d8ce --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_bit_floor_test.c @@ -0,0 +1,25 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_bit_floor +#define MKREFFUNC(name, type) \ + static type \ + name(type value) \ + { \ + type floor = 1; \ + \ + if (value == 0) \ + return (0); \ + \ + while (value != 1) { \ + floor <<= 1; \ + value >>= 1; \ + } \ + \ + return (floor); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_bit_width_test.c b/lib/libc/tests/stdbit/stdc_bit_width_test.c new file mode 100644 index 000000000000..bfcb2b3bd779 --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_bit_width_test.c @@ -0,0 +1,22 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_bit_width +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + unsigned width = 0; \ + \ + while (value != 0) { \ + value >>= 1; \ + width++; \ + } \ + \ + return (width); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_count_ones_test.c b/lib/libc/tests/stdbit/stdc_count_ones_test.c new file mode 100644 index 000000000000..9093edde495b --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_count_ones_test.c @@ -0,0 +1,22 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_count_ones +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + unsigned count = 0; \ + \ + while (value != 0) { \ + count += value & 1; \ + value >>= 1; \ + } \ + \ + return (count); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_count_zeros_test.c b/lib/libc/tests/stdbit/stdc_count_zeros_test.c new file mode 100644 index 000000000000..a82de6696a64 --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_count_zeros_test.c @@ -0,0 +1,23 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_count_zeros +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + unsigned count = 0; \ + \ + value = ~value; \ + while (value != 0) { \ + count += value & 1; \ + value >>= 1; \ + } \ + \ + return (count); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_first_leading_one_test.c b/lib/libc/tests/stdbit/stdc_first_leading_one_test.c new file mode 100644 index 000000000000..7312789262ea --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_first_leading_one_test.c @@ -0,0 +1,29 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_first_leading_one +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + type bit = 1; \ + unsigned pos = 1; \ + \ + if (value == 0) \ + return (0); \ + \ + while ((type)(bit << 1) != 0) \ + bit <<= 1; \ + \ + while ((bit & value) == 0) { \ + bit >>= 1; \ + pos++; \ + } \ + \ + return (pos); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_first_leading_zero_test.c b/lib/libc/tests/stdbit/stdc_first_leading_zero_test.c new file mode 100644 index 000000000000..df2a1f4b8673 --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_first_leading_zero_test.c @@ -0,0 +1,30 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_first_leading_zero +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + type bit = 1; \ + unsigned pos = 1; \ + \ + value = ~value; \ + if (value == 0) \ + return (0); \ + \ + while ((type)(bit << 1) != 0) \ + bit <<= 1; \ + \ + while ((bit & value) == 0) { \ + bit >>= 1; \ + pos++; \ + } \ + \ + return (pos); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_first_trailing_one_test.c b/lib/libc/tests/stdbit/stdc_first_trailing_one_test.c new file mode 100644 index 000000000000..43284786cd0e --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_first_trailing_one_test.c @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_first_trailing_one +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + type bit = 1; \ + unsigned pos = 1; \ + \ + if (value == 0) \ + return (0); \ + \ + while ((bit & value) == 0) { \ + bit <<= 1; \ + pos++; \ + } \ + \ + return (pos); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_first_trailing_zero_test.c b/lib/libc/tests/stdbit/stdc_first_trailing_zero_test.c new file mode 100644 index 000000000000..ab2a995dcc86 --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_first_trailing_zero_test.c @@ -0,0 +1,27 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_first_trailing_zero +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + type bit = 1; \ + unsigned pos = 1; \ + \ + value = ~value; \ + if (value == 0) \ + return (0); \ + \ + while ((bit & value) == 0) { \ + bit <<= 1; \ + pos++; \ + } \ + \ + return (pos); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_has_single_bit_test.c b/lib/libc/tests/stdbit/stdc_has_single_bit_test.c new file mode 100644 index 000000000000..3426deccd8d0 --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_has_single_bit_test.c @@ -0,0 +1,21 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_has_single_bit +#define MKREFFUNC(name, type) \ + static bool \ + name(type value) \ + { \ + type bit; \ + \ + for (bit = 1; bit != 0; bit <<= 1) \ + if (value == bit) \ + return (true); \ + \ + return (false); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_leading_ones_test.c b/lib/libc/tests/stdbit/stdc_leading_ones_test.c new file mode 100644 index 000000000000..616b3d5e6279 --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_leading_ones_test.c @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_leading_ones +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + type bit = 1; \ + unsigned count = 0; \ + \ + while ((type)(bit << 1) != 0) \ + bit <<= 1; \ + \ + while (bit != 0 && (bit & value) != 0) { \ + bit >>= 1; \ + count++; \ + } \ + \ + return (count); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_leading_zeros_test.c b/lib/libc/tests/stdbit/stdc_leading_zeros_test.c new file mode 100644 index 000000000000..7c9d26e86456 --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_leading_zeros_test.c @@ -0,0 +1,26 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_leading_zeros +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + type bit = 1; \ + unsigned count = 0; \ + \ + while ((type)(bit << 1) != 0) \ + bit <<= 1; \ + \ + while (bit != 0 && (bit & value) == 0) { \ + bit >>= 1; \ + count++; \ + } \ + \ + return (count); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_trailing_ones_test.c b/lib/libc/tests/stdbit/stdc_trailing_ones_test.c new file mode 100644 index 000000000000..9e261cc543de --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_trailing_ones_test.c @@ -0,0 +1,23 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_trailing_ones +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + type bit = 1; \ + unsigned count = 0; \ + \ + while (bit != 0 && (bit & value) != 0) { \ + bit <<= 1; \ + count++; \ + } \ + \ + return (count); \ + } + +#include "stdbit-test-framework.c" diff --git a/lib/libc/tests/stdbit/stdc_trailing_zeros_test.c b/lib/libc/tests/stdbit/stdc_trailing_zeros_test.c new file mode 100644 index 000000000000..81fe11c5c82a --- /dev/null +++ b/lib/libc/tests/stdbit/stdc_trailing_zeros_test.c @@ -0,0 +1,23 @@ +/* + * Copyright (c) 2025 Robert Clausecker + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#define FUNCSTEM stdc_trailing_zeros +#define MKREFFUNC(name, type) \ + static unsigned \ + name(type value) \ + { \ + type bit = 1; \ + unsigned count = 0; \ + \ + while (bit != 0 && (bit & value) == 0) { \ + bit <<= 1; \ + count++; \ + } \ + \ + return (count); \ + } + +#include "stdbit-test-framework.c"