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Use gcc __builtin_stdc_* builtins in stdbit.h if possible

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The following patch uses the GCC 14 __builtin_stdc_* builtins in stdbit.h
for the type-generic macros, so that when compiled with GCC 14 or later,
it supports not just 8/16/32/64-bit unsigned integers, but also 128-bit
(if target supports them) and unsigned _BitInt (any supported precision).
And so that the macros don't expand arguments multiple times and can be
evaluated in constant expressions.

The new testcase is gcc's gcc/testsuite/gcc.dg/builtin-stdc-bit-1.c
adjusted to test stdbit.h and the type-generic macros in there instead
of the builtins and adjusted to use glibc test framework rather than
gcc style tests with __builtin_abort ().

Signed-off-by: Jakub Jelinek <jakub@redhat.com>
Reviewed-by: Joseph Myers <josmyers@redhat.com>
This commit is contained in:
Jakub Jelinek 2024-01-31 19:17:27 +01:00
parent 903cd86606
commit da89496337
5 changed files with 860 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
NEWS
View File

@ -9,7 +9,10 @@ Version 2.40
Major new features:
[Add new features here]
* The <stdbit.h> header type-generic macros have been changed when using
GCC 14.1 or later to use __builtin_stdc_bit_ceil etc. built-in functions
in order to support unsigned __int128 and/or unsigned _BitInt(N) operands
with arbitrary precisions when supported by the target.
Deprecated and removed features, and other changes affecting compatibility:

8
manual/stdbit.texi
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@ -32,7 +32,13 @@ and @code{unsigned long long int}. In addition, there is a
corresponding type-generic macro (not listed below), named the same as
the functions but without any suffix such as @samp{_uc}. The
type-generic macro can only be used with an argument of an unsigned
integer type with a width of 8, 16, 32 or 64 bits.
integer type with a width of 8, 16, 32 or 64 bits, or when using
a compiler with support for
@uref{https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html@code{__builtin_stdc_bit_ceil}},
etc.@:, built-in functions such as GCC 14.1 or later
any unsigned integer type those built-in functions support.
In GCC 14.1 that includes support for @code{unsigned __int128} and
@code{unsigned _BitInt(@var{n})} if supported by the target.
@deftypefun {unsigned int} stdc_leading_zeros_uc (unsigned char @var{x})
@deftypefunx {unsigned int} stdc_leading_zeros_us (unsigned short @var{x})

1
stdlib/Makefile
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@ -308,6 +308,7 @@ tests := \
tst-setcontext10 \
tst-setcontext11 \
tst-stdbit-Wconversion \
tst-stdbit-builtins \
tst-stdc_bit_ceil \
tst-stdc_bit_floor \
tst-stdc_bit_width \

84
stdlib/stdbit.h
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@ -64,9 +64,13 @@ extern unsigned int stdc_leading_zeros_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_leading_zeros_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_leading_zeros(x) \
#if __glibc_has_builtin (__builtin_stdc_leading_zeros)
# define stdc_leading_zeros(x) (__builtin_stdc_leading_zeros (x))
#else
# define stdc_leading_zeros(x) \
(stdc_leading_zeros_ull (x) \
- (unsigned int) (8 * (sizeof (0ULL) - sizeof (x))))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
static __always_inline unsigned int
@ -116,9 +120,13 @@ extern unsigned int stdc_leading_ones_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_leading_ones_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_leading_ones(x) \
#if __glibc_has_builtin (__builtin_stdc_leading_ones)
# define stdc_leading_ones(x) (__builtin_stdc_leading_ones (x))
#else
# define stdc_leading_ones(x) \
(stdc_leading_ones_ull ((unsigned long long int) (x) \
<< 8 * (sizeof (0ULL) - sizeof (x))))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
static __always_inline unsigned int
@ -168,11 +176,15 @@ extern unsigned int stdc_trailing_zeros_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_trailing_zeros_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_trailing_zeros(x) \
#if __glibc_has_builtin (__builtin_stdc_trailing_zeros)
# define stdc_trailing_zeros(x) (__builtin_stdc_trailing_zeros (x))
#else
# define stdc_trailing_zeros(x) \
(sizeof (x) == 8 ? stdc_trailing_zeros_ull (x) \
: sizeof (x) == 4 ? stdc_trailing_zeros_ui (x) \
: sizeof (x) == 2 ? stdc_trailing_zeros_us (__pacify_uint16 (x)) \
: stdc_trailing_zeros_uc (__pacify_uint8 (x)))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_ctzll)
static __always_inline unsigned int
@ -222,7 +234,11 @@ extern unsigned int stdc_trailing_ones_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_trailing_ones_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_trailing_ones(x) (stdc_trailing_ones_ull (x))
#if __glibc_has_builtin (__builtin_stdc_trailing_ones)
# define stdc_trailing_ones(x) (__builtin_stdc_trailing_ones (x))
#else
# define stdc_trailing_ones(x) (stdc_trailing_ones_ull (x))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_ctzll)
static __always_inline unsigned int
@ -272,11 +288,15 @@ extern unsigned int stdc_first_leading_zero_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_first_leading_zero_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_first_leading_zero(x) \
#if __glibc_has_builtin (__builtin_stdc_first_leading_zero)
# define stdc_first_leading_zero(x) (__builtin_stdc_first_leading_zero (x))
#else
# define stdc_first_leading_zero(x) \
(sizeof (x) == 8 ? stdc_first_leading_zero_ull (x) \
: sizeof (x) == 4 ? stdc_first_leading_zero_ui (x) \
: sizeof (x) == 2 ? stdc_first_leading_zero_us (__pacify_uint16 (x)) \
: stdc_first_leading_zero_uc (__pacify_uint8 (x)))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
static __always_inline unsigned int
@ -326,11 +346,15 @@ extern unsigned int stdc_first_leading_one_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_first_leading_one_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_first_leading_one(x) \
#if __glibc_has_builtin (__builtin_stdc_first_leading_one)
# define stdc_first_leading_one(x) (__builtin_stdc_first_leading_one (x))
#else
# define stdc_first_leading_one(x) \
(sizeof (x) == 8 ? stdc_first_leading_one_ull (x) \
: sizeof (x) == 4 ? stdc_first_leading_one_ui (x) \
: sizeof (x) == 2 ? stdc_first_leading_one_us (__pacify_uint16 (x)) \
: stdc_first_leading_one_uc (__pacify_uint8 (x)))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
static __always_inline unsigned int
@ -380,11 +404,15 @@ extern unsigned int stdc_first_trailing_zero_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_first_trailing_zero_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_first_trailing_zero(x) \
#if __glibc_has_builtin (__builtin_stdc_first_trailing_zero)
# define stdc_first_trailing_zero(x) (__builtin_stdc_first_trailing_zero (x))
#else
# define stdc_first_trailing_zero(x) \
(sizeof (x) == 8 ? stdc_first_trailing_zero_ull (x) \
: sizeof (x) == 4 ? stdc_first_trailing_zero_ui (x) \
: sizeof (x) == 2 ? stdc_first_trailing_zero_us (__pacify_uint16 (x)) \
: stdc_first_trailing_zero_uc (__pacify_uint8 (x)))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_ctzll)
static __always_inline unsigned int
@ -434,11 +462,15 @@ extern unsigned int stdc_first_trailing_one_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_first_trailing_one_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_first_trailing_one(x) \
#if __glibc_has_builtin (__builtin_stdc_first_trailing_one)
# define stdc_first_trailing_one(x) (__builtin_stdc_first_trailing_one (x))
#else
# define stdc_first_trailing_one(x) \
(sizeof (x) == 8 ? stdc_first_trailing_one_ull (x) \
: sizeof (x) == 4 ? stdc_first_trailing_one_ui (x) \
: sizeof (x) == 2 ? stdc_first_trailing_one_us (__pacify_uint16 (x)) \
: stdc_first_trailing_one_uc (__pacify_uint8 (x)))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_ctzll)
static __always_inline unsigned int
@ -488,9 +520,13 @@ extern unsigned int stdc_count_zeros_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_count_zeros_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_count_zeros(x) \
#if __glibc_has_builtin (__builtin_stdc_count_zeros)
# define stdc_count_zeros(x) (__builtin_stdc_count_zeros (x))
#else
# define stdc_count_zeros(x) \
(stdc_count_zeros_ull (x) \
- (unsigned int) (8 * (sizeof (0ULL) - sizeof (x))))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_popcountll)
static __always_inline unsigned int
@ -540,7 +576,11 @@ extern unsigned int stdc_count_ones_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_count_ones_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_count_ones(x) (stdc_count_ones_ull (x))
#if __glibc_has_builtin (__builtin_stdc_count_ones)
# define stdc_count_ones(x) (__builtin_stdc_count_ones (x))
#else
# define stdc_count_ones(x) (stdc_count_ones_ull (x))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_popcountll)
static __always_inline unsigned int
@ -590,10 +630,14 @@ extern bool stdc_has_single_bit_ul (unsigned long int __x)
__extension__
extern bool stdc_has_single_bit_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_has_single_bit(x) \
#if __glibc_has_builtin (__builtin_stdc_has_single_bit)
# define stdc_has_single_bit(x) (__builtin_stdc_has_single_bit (x))
#else
# define stdc_has_single_bit(x) \
((bool) (sizeof (x) <= sizeof (unsigned int) \
? stdc_has_single_bit_ui (x) \
: stdc_has_single_bit_ull (x)))
#endif
static __always_inline bool
__hsb64_inline (uint64_t __x)
@ -641,7 +685,11 @@ extern unsigned int stdc_bit_width_ul (unsigned long int __x)
__extension__
extern unsigned int stdc_bit_width_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_bit_width(x) (stdc_bit_width_ull (x))
#if __glibc_has_builtin (__builtin_stdc_bit_width)
# define stdc_bit_width(x) (__builtin_stdc_bit_width (x))
#else
# define stdc_bit_width(x) (stdc_bit_width_ull (x))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
static __always_inline unsigned int
@ -691,7 +739,11 @@ extern unsigned long int stdc_bit_floor_ul (unsigned long int __x)
__extension__
extern unsigned long long int stdc_bit_floor_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_bit_floor(x) ((__typeof (x)) stdc_bit_floor_ull (x))
#if __glibc_has_builtin (__builtin_stdc_bit_floor)
# define stdc_bit_floor(x) (__builtin_stdc_bit_floor (x))
#else
# define stdc_bit_floor(x) ((__typeof (x)) stdc_bit_floor_ull (x))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
static __always_inline uint64_t
@ -743,7 +795,11 @@ extern unsigned long int stdc_bit_ceil_ul (unsigned long int __x)
__extension__
extern unsigned long long int stdc_bit_ceil_ull (unsigned long long int __x)
__THROW __attribute_const__;
#define stdc_bit_ceil(x) ((__typeof (x)) stdc_bit_ceil_ull (x))
#if __glibc_has_builtin (__builtin_stdc_bit_ceil)
# define stdc_bit_ceil(x) (__builtin_stdc_bit_ceil (x))
#else
# define stdc_bit_ceil(x) ((__typeof (x)) stdc_bit_ceil_ull (x))
#endif
#if __GNUC_PREREQ (3, 4) || __glibc_has_builtin (__builtin_clzll)
static __always_inline uint64_t

778
stdlib/tst-stdbit-builtins.c Normal file
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@ -0,0 +1,778 @@
/* Test <stdbit.h> type-generic macros with compiler __builtin_stdc_* support.
Copyright (C) 2024 Free Software Foundation, Inc.
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
<https://www.gnu.org/licenses/>. */
#include <stdbit.h>
#include <limits.h>
#include <support/check.h>
#if __glibc_has_builtin (__builtin_stdc_leading_zeros) \
&& __glibc_has_builtin (__builtin_stdc_leading_ones) \
&& __glibc_has_builtin (__builtin_stdc_trailing_zeros) \
&& __glibc_has_builtin (__builtin_stdc_trailing_ones) \
&& __glibc_has_builtin (__builtin_stdc_first_leading_zero) \
&& __glibc_has_builtin (__builtin_stdc_first_leading_one) \
&& __glibc_has_builtin (__builtin_stdc_first_trailing_zero) \
&& __glibc_has_builtin (__builtin_stdc_first_trailing_one) \
&& __glibc_has_builtin (__builtin_stdc_count_zeros) \
&& __glibc_has_builtin (__builtin_stdc_count_ones) \
&& __glibc_has_builtin (__builtin_stdc_has_single_bit) \
&& __glibc_has_builtin (__builtin_stdc_bit_width) \
&& __glibc_has_builtin (__builtin_stdc_bit_floor) \
&& __glibc_has_builtin (__builtin_stdc_bit_ceil)
# if !defined (BITINT_MAXWIDTH) && defined (__BITINT_MAXWIDTH__)
# define BITINT_MAXWIDTH __BITINT_MAXWIDTH__
# endif
typedef unsigned char uc;
typedef unsigned short us;
typedef unsigned int ui;
typedef unsigned long int ul;
typedef unsigned long long int ull;
# define expr_has_type(e, t) _Generic (e, default : 0, t : 1)
static int
do_test (void)
{
TEST_COMPARE (stdc_leading_zeros ((uc) 0), CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_leading_zeros ((uc) 0), ui), 1);
TEST_COMPARE (stdc_leading_zeros ((us) 0), sizeof (short) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_leading_zeros ((us) 0), ui), 1);
TEST_COMPARE (stdc_leading_zeros (0U), sizeof (int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_leading_zeros (0U), ui), 1);
TEST_COMPARE (stdc_leading_zeros (0UL), sizeof (long int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_leading_zeros (0UL), ui), 1);
TEST_COMPARE (stdc_leading_zeros (0ULL), sizeof (long long int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_leading_zeros (0ULL), ui), 1);
TEST_COMPARE (stdc_leading_zeros ((uc) ~0U), 0);
TEST_COMPARE (stdc_leading_zeros ((us) ~0U), 0);
TEST_COMPARE (stdc_leading_zeros (~0U), 0);
TEST_COMPARE (stdc_leading_zeros (~0UL), 0);
TEST_COMPARE (stdc_leading_zeros (~0ULL), 0);
TEST_COMPARE (stdc_leading_zeros ((uc) 3), CHAR_BIT - 2);
TEST_COMPARE (stdc_leading_zeros ((us) 9), sizeof (short) * CHAR_BIT - 4);
TEST_COMPARE (stdc_leading_zeros (34U), sizeof (int) * CHAR_BIT - 6);
TEST_COMPARE (stdc_leading_zeros (130UL), sizeof (long int) * CHAR_BIT - 8);
TEST_COMPARE (stdc_leading_zeros (512ULL),
sizeof (long long int) * CHAR_BIT - 10);
TEST_COMPARE (stdc_leading_ones ((uc) 0), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones ((uc) 0), ui), 1);
TEST_COMPARE (stdc_leading_ones ((us) 0), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones ((us) 0), ui), 1);
TEST_COMPARE (stdc_leading_ones (0U), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones (0U), ui), 1);
TEST_COMPARE (stdc_leading_ones (0UL), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones (0UL), ui), 1);
TEST_COMPARE (stdc_leading_ones (0ULL), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones (0ULL), ui), 1);
TEST_COMPARE (stdc_leading_ones ((uc) ~0U), CHAR_BIT);
TEST_COMPARE (stdc_leading_ones ((us) ~0U), sizeof (short) * CHAR_BIT);
TEST_COMPARE (stdc_leading_ones (~0U), sizeof (int) * CHAR_BIT);
TEST_COMPARE (stdc_leading_ones (~0UL), sizeof (long int) * CHAR_BIT);
TEST_COMPARE (stdc_leading_ones (~0ULL), sizeof (long long int) * CHAR_BIT);
TEST_COMPARE (stdc_leading_ones ((uc) ~3), CHAR_BIT - 2);
TEST_COMPARE (stdc_leading_ones ((us) ~9), sizeof (short) * CHAR_BIT - 4);
TEST_COMPARE (stdc_leading_ones (~34U), sizeof (int) * CHAR_BIT - 6);
TEST_COMPARE (stdc_leading_ones (~130UL), sizeof (long int) * CHAR_BIT - 8);
TEST_COMPARE (stdc_leading_ones (~512ULL),
sizeof (long long int) * CHAR_BIT - 10);
TEST_COMPARE (stdc_trailing_zeros ((uc) 0), CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros ((uc) 0), ui), 1);
TEST_COMPARE (stdc_trailing_zeros ((us) 0), sizeof (short) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros ((us) 0), ui), 1);
TEST_COMPARE (stdc_trailing_zeros (0U), sizeof (int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros (0U), ui), 1);
TEST_COMPARE (stdc_trailing_zeros (0UL), sizeof (long int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros (0UL), ui), 1);
TEST_COMPARE (stdc_trailing_zeros (0ULL), sizeof (long long int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros (0ULL), ui), 1);
TEST_COMPARE (stdc_trailing_zeros ((uc) ~0U), 0);
TEST_COMPARE (stdc_trailing_zeros ((us) ~0U), 0);
TEST_COMPARE (stdc_trailing_zeros (~0U), 0);
TEST_COMPARE (stdc_trailing_zeros (~0UL), 0);
TEST_COMPARE (stdc_trailing_zeros (~0ULL), 0);
TEST_COMPARE (stdc_trailing_zeros ((uc) 2), 1);
TEST_COMPARE (stdc_trailing_zeros ((us) 24), 3);
TEST_COMPARE (stdc_trailing_zeros (32U), 5);
TEST_COMPARE (stdc_trailing_zeros (128UL), 7);
TEST_COMPARE (stdc_trailing_zeros (512ULL), 9);
TEST_COMPARE (stdc_trailing_ones ((uc) 0), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones ((uc) 0), ui), 1);
TEST_COMPARE (stdc_trailing_ones ((us) 0), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones ((us) 0), ui), 1);
TEST_COMPARE (stdc_trailing_ones (0U), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones (0U), ui), 1);
TEST_COMPARE (stdc_trailing_ones (0UL), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones (0UL), ui), 1);
TEST_COMPARE (stdc_trailing_ones (0ULL), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones (0ULL), ui), 1);
TEST_COMPARE (stdc_trailing_ones ((uc) ~0U), CHAR_BIT);
TEST_COMPARE (stdc_trailing_ones ((us) ~0U), sizeof (short) * CHAR_BIT);
TEST_COMPARE (stdc_trailing_ones (~0U), sizeof (int) * CHAR_BIT);
TEST_COMPARE (stdc_trailing_ones (~0UL), sizeof (long int) * CHAR_BIT);
TEST_COMPARE (stdc_trailing_ones (~0ULL), sizeof (long long int) * CHAR_BIT);
TEST_COMPARE (stdc_trailing_ones ((uc) 5), 1);
TEST_COMPARE (stdc_trailing_ones ((us) 15), 4);
TEST_COMPARE (stdc_trailing_ones (127U), 7);
TEST_COMPARE (stdc_trailing_ones (511UL), 9);
TEST_COMPARE (stdc_trailing_ones (~0ULL >> 2),
sizeof (long long int) * CHAR_BIT - 2);
TEST_COMPARE (stdc_first_leading_zero ((uc) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero ((uc) 0), ui), 1);
TEST_COMPARE (stdc_first_leading_zero ((us) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero ((us) 0), ui), 1);
TEST_COMPARE (stdc_first_leading_zero (0U), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero (0U), ui), 1);
TEST_COMPARE (stdc_first_leading_zero (0UL), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero (0UL), ui), 1);
TEST_COMPARE (stdc_first_leading_zero (0ULL), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero (0ULL), ui), 1);
TEST_COMPARE (stdc_first_leading_zero ((uc) ~0U), 0);
TEST_COMPARE (stdc_first_leading_zero ((us) ~0U), 0);
TEST_COMPARE (stdc_first_leading_zero (~0U), 0);
TEST_COMPARE (stdc_first_leading_zero (~0UL), 0);
TEST_COMPARE (stdc_first_leading_zero (~0ULL), 0);
TEST_COMPARE (stdc_first_leading_zero ((uc) ~3U), CHAR_BIT - 1);
TEST_COMPARE (stdc_first_leading_zero ((us) ~15U),
sizeof (short) * CHAR_BIT - 3);
TEST_COMPARE (stdc_first_leading_zero (~63U), sizeof (int) * CHAR_BIT - 5);
TEST_COMPARE (stdc_first_leading_zero (~255UL),
sizeof (long int) * CHAR_BIT - 7);
TEST_COMPARE (stdc_first_leading_zero (~1023ULL),
sizeof (long long int) * CHAR_BIT - 9);
TEST_COMPARE (stdc_first_leading_one ((uc) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one ((uc) 0), ui), 1);
TEST_COMPARE (stdc_first_leading_one ((us) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one ((us) 0), ui), 1);
TEST_COMPARE (stdc_first_leading_one (0U), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one (0U), ui), 1);
TEST_COMPARE (stdc_first_leading_one (0UL), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one (0UL), ui), 1);
TEST_COMPARE (stdc_first_leading_one (0ULL), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one (0ULL), ui), 1);
TEST_COMPARE (stdc_first_leading_one ((uc) ~0U), 1);
TEST_COMPARE (stdc_first_leading_one ((us) ~0U), 1);
TEST_COMPARE (stdc_first_leading_one (~0U), 1);
TEST_COMPARE (stdc_first_leading_one (~0UL), 1);
TEST_COMPARE (stdc_first_leading_one (~0ULL), 1);
TEST_COMPARE (stdc_first_leading_one ((uc) 3), CHAR_BIT - 1);
TEST_COMPARE (stdc_first_leading_one ((us) 9),
sizeof (short) * CHAR_BIT - 3);
TEST_COMPARE (stdc_first_leading_one (34U), sizeof (int) * CHAR_BIT - 5);
TEST_COMPARE (stdc_first_leading_one (130UL),
sizeof (long int) * CHAR_BIT - 7);
TEST_COMPARE (stdc_first_leading_one (512ULL),
sizeof (long long int) * CHAR_BIT - 9);
TEST_COMPARE (stdc_first_trailing_zero ((uc) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero ((uc) 0), ui), 1);
TEST_COMPARE (stdc_first_trailing_zero ((us) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero ((us) 0), ui), 1);
TEST_COMPARE (stdc_first_trailing_zero (0U), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero (0U), ui), 1);
TEST_COMPARE (stdc_first_trailing_zero (0UL), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero (0UL), ui), 1);
TEST_COMPARE (stdc_first_trailing_zero (0ULL), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero (0ULL), ui), 1);
TEST_COMPARE (stdc_first_trailing_zero ((uc) ~0U), 0);
TEST_COMPARE (stdc_first_trailing_zero ((us) ~0U), 0);
TEST_COMPARE (stdc_first_trailing_zero (~0U), 0);
TEST_COMPARE (stdc_first_trailing_zero (~0UL), 0);
TEST_COMPARE (stdc_first_trailing_zero (~0ULL), 0);
TEST_COMPARE (stdc_first_trailing_zero ((uc) 2), 1);
TEST_COMPARE (stdc_first_trailing_zero ((us) 15), 5);
TEST_COMPARE (stdc_first_trailing_zero (63U), 7);
TEST_COMPARE (stdc_first_trailing_zero (128UL), 1);
TEST_COMPARE (stdc_first_trailing_zero (511ULL), 10);
TEST_COMPARE (stdc_first_trailing_one ((uc) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one ((uc) 0), ui), 1);
TEST_COMPARE (stdc_first_trailing_one ((us) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one ((us) 0), ui), 1);
TEST_COMPARE (stdc_first_trailing_one (0U), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one (0U), ui), 1);
TEST_COMPARE (stdc_first_trailing_one (0UL), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one (0UL), ui), 1);
TEST_COMPARE (stdc_first_trailing_one (0ULL), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one (0ULL), ui), 1);
TEST_COMPARE (stdc_first_trailing_one ((uc) ~0U), 1);
TEST_COMPARE (stdc_first_trailing_one ((us) ~0U), 1);
TEST_COMPARE (stdc_first_trailing_one (~0U), 1);
TEST_COMPARE (stdc_first_trailing_one (~0UL), 1);
TEST_COMPARE (stdc_first_trailing_one (~0ULL), 1);
TEST_COMPARE (stdc_first_trailing_one ((uc) 4), 3);
TEST_COMPARE (stdc_first_trailing_one ((us) 96), 6);
TEST_COMPARE (stdc_first_trailing_one (127U), 1);
TEST_COMPARE (stdc_first_trailing_one (511UL), 1);
TEST_COMPARE (stdc_first_trailing_one (~0ULL << 12), 13);
TEST_COMPARE (stdc_count_zeros ((uc) 0), CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_count_zeros ((uc) 0), ui), 1);
TEST_COMPARE (stdc_count_zeros ((us) 0), sizeof (short) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_count_zeros ((us) 0), ui), 1);
TEST_COMPARE (stdc_count_zeros (0U), sizeof (int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_count_zeros (0U), ui), 1);
TEST_COMPARE (stdc_count_zeros (0UL), sizeof (long int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_count_zeros (0UL), ui), 1);
TEST_COMPARE (stdc_count_zeros (0ULL), sizeof (long long int) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_count_zeros (0ULL), ui), 1);
TEST_COMPARE (stdc_count_zeros ((uc) ~0U), 0);
TEST_COMPARE (stdc_count_zeros ((us) ~0U), 0);
TEST_COMPARE (stdc_count_zeros (~0U), 0);
TEST_COMPARE (stdc_count_zeros (~0UL), 0);
TEST_COMPARE (stdc_count_zeros (~0ULL), 0);
TEST_COMPARE (stdc_count_zeros ((uc) 1U), CHAR_BIT - 1);
TEST_COMPARE (stdc_count_zeros ((us) 42), sizeof (short) * CHAR_BIT - 3);
TEST_COMPARE (stdc_count_zeros (291U), sizeof (int) * CHAR_BIT - 4);
TEST_COMPARE (stdc_count_zeros (~1315UL), 5);
TEST_COMPARE (stdc_count_zeros (3363ULL),
sizeof (long long int) * CHAR_BIT - 6);
TEST_COMPARE (stdc_count_ones ((uc) 0), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones ((uc) 0), ui), 1);
TEST_COMPARE (stdc_count_ones ((us) 0), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones ((us) 0), ui), 1);
TEST_COMPARE (stdc_count_ones (0U), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones (0U), ui), 1);
TEST_COMPARE (stdc_count_ones (0UL), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones (0UL), ui), 1);
TEST_COMPARE (stdc_count_ones (0ULL), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones (0ULL), ui), 1);
TEST_COMPARE (stdc_count_ones ((uc) ~0U), CHAR_BIT);
TEST_COMPARE (stdc_count_ones ((us) ~0U), sizeof (short) * CHAR_BIT);
TEST_COMPARE (stdc_count_ones (~0U), sizeof (int) * CHAR_BIT);
TEST_COMPARE (stdc_count_ones (~0UL), sizeof (long int) * CHAR_BIT);
TEST_COMPARE (stdc_count_ones (~0ULL), sizeof (long long int) * CHAR_BIT);
TEST_COMPARE (stdc_count_ones ((uc) ~1U), CHAR_BIT - 1);
TEST_COMPARE (stdc_count_ones ((us) ~42), sizeof (short) * CHAR_BIT - 3);
TEST_COMPARE (stdc_count_ones (~291U), sizeof (int) * CHAR_BIT - 4);
TEST_COMPARE (stdc_count_ones (1315UL), 5);
TEST_COMPARE (stdc_count_ones (~3363ULL),
sizeof (long long int) * CHAR_BIT - 6);
TEST_COMPARE (stdc_has_single_bit ((uc) 0), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit ((uc) 0), _Bool), 1);
TEST_COMPARE (stdc_has_single_bit ((us) 0), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit ((us) 0), _Bool), 1);
TEST_COMPARE (stdc_has_single_bit (0U), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit (0U), _Bool), 1);
TEST_COMPARE (stdc_has_single_bit (0UL), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit (0UL), _Bool), 1);
TEST_COMPARE (stdc_has_single_bit (0ULL), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit (0ULL), _Bool), 1);
TEST_COMPARE (stdc_has_single_bit ((uc) 2), 1);
TEST_COMPARE (stdc_has_single_bit ((us) 8), 1);
TEST_COMPARE (stdc_has_single_bit (32U), 1);
TEST_COMPARE (stdc_has_single_bit (128UL), 1);
TEST_COMPARE (stdc_has_single_bit (512ULL), 1);
TEST_COMPARE (stdc_has_single_bit ((uc) 7), 0);
TEST_COMPARE (stdc_has_single_bit ((us) 96), 0);
TEST_COMPARE (stdc_has_single_bit (513U), 0);
TEST_COMPARE (stdc_has_single_bit (1022UL), 0);
TEST_COMPARE (stdc_has_single_bit (12ULL), 0);
TEST_COMPARE (stdc_bit_width ((uc) 0), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width ((uc) 0), ui), 1);
TEST_COMPARE (stdc_bit_width ((us) 0), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width ((us) 0), ui), 1);
TEST_COMPARE (stdc_bit_width (0U), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width (0U), ui), 1);
TEST_COMPARE (stdc_bit_width (0UL), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width (0UL), ui), 1);
TEST_COMPARE (stdc_bit_width (0ULL), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width (0ULL), ui), 1);
TEST_COMPARE (stdc_bit_width ((uc) ~0U), CHAR_BIT);
TEST_COMPARE (stdc_bit_width ((us) ~0U), sizeof (short) * CHAR_BIT);
TEST_COMPARE (stdc_bit_width (~0U), sizeof (int) * CHAR_BIT);
TEST_COMPARE (stdc_bit_width (~0UL), sizeof (long int) * CHAR_BIT);
TEST_COMPARE (stdc_bit_width (~0ULL), sizeof (long long int) * CHAR_BIT);
TEST_COMPARE (stdc_bit_width ((uc) ((uc) ~0U >> 1)), CHAR_BIT - 1);
TEST_COMPARE (stdc_bit_width ((uc) 6), 3);
TEST_COMPARE (stdc_bit_width ((us) 12U), 4);
TEST_COMPARE (stdc_bit_width ((us) ((us) ~0U >> 5)),
sizeof (short) * CHAR_BIT - 5);
TEST_COMPARE (stdc_bit_width (137U), 8);
TEST_COMPARE (stdc_bit_width (269U), 9);
TEST_COMPARE (stdc_bit_width (39UL), 6);
TEST_COMPARE (stdc_bit_width (~0UL >> 2), sizeof (long int) * CHAR_BIT - 2);
TEST_COMPARE (stdc_bit_width (1023ULL), 10);
TEST_COMPARE (stdc_bit_width (1024ULL), 11);
TEST_COMPARE (stdc_bit_floor ((uc) 0), 0);
TEST_COMPARE (expr_has_type (stdc_bit_floor ((uc) 0), uc), 1);
TEST_COMPARE (stdc_bit_floor ((us) 0), 0);
TEST_COMPARE (expr_has_type (stdc_bit_floor ((us) 0), us), 1);
TEST_COMPARE (stdc_bit_floor (0U), 0U);
TEST_COMPARE (expr_has_type (stdc_bit_floor (0U), ui), 1);
TEST_COMPARE (stdc_bit_floor (0UL), 0UL);
TEST_COMPARE (expr_has_type (stdc_bit_floor (0UL), ul), 1);
TEST_COMPARE (stdc_bit_floor (0ULL), 0ULL);
TEST_COMPARE (expr_has_type (stdc_bit_floor (0ULL), ull), 1);
TEST_COMPARE (stdc_bit_floor ((uc) ~0U), (1U << (CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_floor ((us) ~0U),
(1U << (sizeof (short) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_floor (~0U), (1U << (sizeof (int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_floor (~0UL),
(1UL << (sizeof (long int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_floor (~0ULL),
(1ULL << (sizeof (long long int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_floor ((uc) 4), 4);
TEST_COMPARE (stdc_bit_floor ((uc) 7), 4);
TEST_COMPARE (stdc_bit_floor ((us) 8U), 8);
TEST_COMPARE (stdc_bit_floor ((us) 31U), 16);
TEST_COMPARE (stdc_bit_floor (137U), 128U);
TEST_COMPARE (stdc_bit_floor (269U), 256U);
TEST_COMPARE (stdc_bit_floor (511UL), 256UL);
TEST_COMPARE (stdc_bit_floor (512UL), 512UL);
TEST_COMPARE (stdc_bit_floor (513UL), 512ULL);
TEST_COMPARE (stdc_bit_floor (1024ULL), 1024ULL);
TEST_COMPARE (stdc_bit_ceil ((uc) 0), 1);
TEST_COMPARE (expr_has_type (stdc_bit_ceil ((uc) 0), uc), 1);
TEST_COMPARE (stdc_bit_ceil ((us) 0), 1);
TEST_COMPARE (expr_has_type (stdc_bit_ceil ((us) 0), us), 1);
TEST_COMPARE (stdc_bit_ceil (0U), 1U);
TEST_COMPARE (expr_has_type (stdc_bit_ceil (0U), ui), 1);
TEST_COMPARE (stdc_bit_ceil (0UL), 1UL);
TEST_COMPARE (expr_has_type (stdc_bit_ceil (0UL), ul), 1);
TEST_COMPARE (stdc_bit_ceil (0ULL), 1ULL);
TEST_COMPARE (expr_has_type (stdc_bit_ceil (0ULL), ull), 1);
TEST_COMPARE (stdc_bit_ceil ((uc) ~0U), 0);
TEST_COMPARE (stdc_bit_ceil ((us) ~0U), 0);
TEST_COMPARE (stdc_bit_ceil (~0U), 0U);
TEST_COMPARE (stdc_bit_ceil (~0UL), 0UL);
TEST_COMPARE (stdc_bit_ceil (~0ULL), 0ULL);
TEST_COMPARE (stdc_bit_ceil ((uc) ((uc) ~0U >> 1)), (1U << (CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil ((uc) ((uc) ~0U >> 1)), (1U << (CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil ((us) ((us) ~0U >> 1)),
(1U << (sizeof (short) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil ((us) ((us) ~0U >> 1)),
(1U << (sizeof (short) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil (~0U >> 1),
(1U << (sizeof (int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil (1U << (sizeof (int) * CHAR_BIT - 1)),
(1U << (sizeof (int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil (~0UL >> 1),
(1UL << (sizeof (long int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil (~0UL >> 1),
(1UL << (sizeof (long int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil (1ULL
<< (sizeof (long long int) * CHAR_BIT - 1)),
(1ULL << (sizeof (long long int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil (~0ULL >> 1),
(1ULL << (sizeof (long long int) * CHAR_BIT - 1)));
TEST_COMPARE (stdc_bit_ceil ((uc) 1), 1);
TEST_COMPARE (stdc_bit_ceil ((uc) 2), 2);
TEST_COMPARE (stdc_bit_ceil ((us) 3U), 4);
TEST_COMPARE (stdc_bit_ceil ((us) 4U), 4);
TEST_COMPARE (stdc_bit_ceil (5U), 8U);
TEST_COMPARE (stdc_bit_ceil (269U), 512U);
TEST_COMPARE (stdc_bit_ceil (511UL), 512UL);
TEST_COMPARE (stdc_bit_ceil (512UL), 512UL);
TEST_COMPARE (stdc_bit_ceil (513ULL), 1024ULL);
TEST_COMPARE (stdc_bit_ceil (1025ULL), 2048ULL);
# ifdef __SIZEOF_INT128__
TEST_COMPARE (stdc_leading_zeros ((unsigned __int128) 0),
sizeof (__int128) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_leading_zeros ((unsigned __int128) 0), ui),
1);
TEST_COMPARE (stdc_leading_zeros (~(unsigned __int128) 0), 0);
TEST_COMPARE (stdc_leading_ones ((unsigned __int128) 0), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones ((unsigned __int128) 0), ui),
1);
TEST_COMPARE (stdc_leading_ones (~(unsigned __int128) 0),
sizeof (__int128) * CHAR_BIT);
TEST_COMPARE (stdc_trailing_zeros ((unsigned __int128) 0),
sizeof (__int128) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros ((unsigned __int128) 0),
ui), 1);
TEST_COMPARE (stdc_trailing_zeros (~(unsigned __int128) 0), 0);
TEST_COMPARE (stdc_trailing_ones ((unsigned __int128) 0), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones ((unsigned __int128) 0), ui),
1);
TEST_COMPARE (stdc_trailing_ones (~(unsigned __int128) 0),
sizeof (__int128) * CHAR_BIT);
TEST_COMPARE (stdc_first_leading_zero ((unsigned __int128) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero ((unsigned __int128) 0),
ui), 1);
TEST_COMPARE (stdc_first_leading_zero (~(unsigned __int128) 0), 0);
TEST_COMPARE (stdc_first_leading_one ((unsigned __int128) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one ((unsigned __int128) 0),
ui), 1);
TEST_COMPARE (stdc_first_leading_one (~(unsigned __int128) 0), 1);
TEST_COMPARE (stdc_first_trailing_zero ((unsigned __int128) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero ((unsigned __int128)
0), ui), 1);
TEST_COMPARE (stdc_first_trailing_zero (~(unsigned __int128) 0), 0);
TEST_COMPARE (stdc_first_trailing_one ((unsigned __int128) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one ((unsigned __int128) 0),
ui), 1);
TEST_COMPARE (stdc_first_trailing_one (~(unsigned __int128) 0), 1);
TEST_COMPARE (stdc_count_zeros ((unsigned __int128) 0),
sizeof (__int128) * CHAR_BIT);
TEST_COMPARE (expr_has_type (stdc_count_zeros ((unsigned __int128) 0), ui),
1);
TEST_COMPARE (stdc_count_zeros (~(unsigned __int128) 0), 0);
TEST_COMPARE (stdc_count_ones ((unsigned __int128) 0), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones ((unsigned __int128) 0), ui),
1);
TEST_COMPARE (stdc_count_ones (~(unsigned __int128) 0),
sizeof (__int128) * CHAR_BIT);
TEST_COMPARE (stdc_has_single_bit ((unsigned __int128) 0), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit ((unsigned __int128) 0),
_Bool), 1);
TEST_COMPARE (stdc_has_single_bit (~(unsigned __int128) 0), 0);
TEST_COMPARE (stdc_bit_width ((unsigned __int128) 0), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width ((unsigned __int128) 0), ui), 1);
TEST_COMPARE (stdc_bit_width (~(unsigned __int128) 0),
sizeof (__int128) * CHAR_BIT);
TEST_COMPARE (stdc_bit_floor ((unsigned __int128) 0) != 0, 0);
TEST_COMPARE (expr_has_type (stdc_bit_floor ((unsigned __int128) 0),
unsigned __int128), 1);
TEST_COMPARE (stdc_bit_floor (~(unsigned __int128) 0)
!= ((unsigned __int128) 1) << (sizeof (__int128)
* CHAR_BIT - 1), 0);
TEST_COMPARE (stdc_bit_ceil ((unsigned __int128) 0) != 1, 0);
TEST_COMPARE (expr_has_type (stdc_bit_ceil ((unsigned __int128) 0),
unsigned __int128), 1);
TEST_COMPARE (stdc_bit_ceil ((unsigned __int128) 1) != 1, 0);
TEST_COMPARE (stdc_bit_ceil ((~(unsigned __int128) 0) >> 1)
!= ((unsigned __int128) 1) << (sizeof (__int128)
* CHAR_BIT - 1), 0);
TEST_COMPARE (stdc_bit_ceil (~(unsigned __int128) 0) != 0, 0);
# endif
uc a = 0;
TEST_COMPARE (stdc_bit_width (a++), 0);
TEST_COMPARE (a, 1);
ull b = 0;
TEST_COMPARE (stdc_bit_width (b++), 0);
TEST_COMPARE (b, 1);
TEST_COMPARE (stdc_bit_floor (a++), 1);
TEST_COMPARE (a, 2);
TEST_COMPARE (stdc_bit_floor (b++), 1);
TEST_COMPARE (b, 2);
TEST_COMPARE (stdc_bit_ceil (a++), 2);
TEST_COMPARE (a, 3);
TEST_COMPARE (stdc_bit_ceil (b++), 2);
TEST_COMPARE (b, 3);
TEST_COMPARE (stdc_leading_zeros (a++), CHAR_BIT - 2);
TEST_COMPARE (a, 4);
TEST_COMPARE (stdc_leading_zeros (b++),
sizeof (long long int) * CHAR_BIT - 2);
TEST_COMPARE (b, 4);
TEST_COMPARE (stdc_leading_ones (a++), 0);
TEST_COMPARE (a, 5);
TEST_COMPARE (stdc_leading_ones (b++), 0);
TEST_COMPARE (b, 5);
TEST_COMPARE (stdc_trailing_zeros (a++), 0);
TEST_COMPARE (a, 6);
TEST_COMPARE (stdc_trailing_zeros (b++), 0);
TEST_COMPARE (b, 6);
TEST_COMPARE (stdc_trailing_ones (a++), 0);
TEST_COMPARE (a, 7);
TEST_COMPARE (stdc_trailing_ones (b++), 0);
TEST_COMPARE (b, 7);
TEST_COMPARE (stdc_first_leading_zero (a++), 1);
TEST_COMPARE (a, 8);
TEST_COMPARE (stdc_first_leading_zero (b++), 1);
TEST_COMPARE (b, 8);
TEST_COMPARE (stdc_first_leading_one (a++), CHAR_BIT - 3);
TEST_COMPARE (a, 9);
TEST_COMPARE (stdc_first_leading_one (b++),
sizeof (long long int) * CHAR_BIT - 3);
TEST_COMPARE (b, 9);
TEST_COMPARE (stdc_first_trailing_zero (a++), 2);
TEST_COMPARE (a, 10);
TEST_COMPARE (stdc_first_trailing_zero (b++), 2);
TEST_COMPARE (b, 10);
TEST_COMPARE (stdc_first_trailing_one (a++), 2);
TEST_COMPARE (a, 11);
TEST_COMPARE (stdc_first_trailing_one (b++), 2);
TEST_COMPARE (b, 11);
TEST_COMPARE (stdc_count_zeros (a++), CHAR_BIT - 3);
TEST_COMPARE (a, 12);
TEST_COMPARE (stdc_count_zeros (b++),
sizeof (long long int) * CHAR_BIT - 3);
TEST_COMPARE (b, 12);
TEST_COMPARE (stdc_count_ones (a++), 2);
TEST_COMPARE (a, 13);
TEST_COMPARE (stdc_count_ones (b++), 2);
TEST_COMPARE (b, 13);
TEST_COMPARE (stdc_has_single_bit (a++), 0);
TEST_COMPARE (a, 14);
TEST_COMPARE (stdc_has_single_bit (b++), 0);
TEST_COMPARE (b, 14);
# ifdef BITINT_MAXWIDTH
# if BITINT_MAXWIDTH >= 64
TEST_COMPARE (stdc_leading_zeros (0uwb), 1);
TEST_COMPARE (expr_has_type (stdc_leading_zeros (0uwb), ui), 1);
TEST_COMPARE (stdc_leading_zeros (1uwb), 0);
TEST_COMPARE (expr_has_type (stdc_leading_zeros (1uwb), ui), 1);
TEST_COMPARE (stdc_leading_ones (0uwb), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones (0uwb), ui), 1);
TEST_COMPARE (stdc_leading_ones (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_leading_ones (1uwb), ui), 1);
TEST_COMPARE (stdc_trailing_zeros (0uwb), 1);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros (0uwb), ui), 1);
TEST_COMPARE (stdc_trailing_zeros (1uwb), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros (1uwb), ui), 1);
TEST_COMPARE (stdc_trailing_ones (0uwb), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones (0uwb), ui), 1);
TEST_COMPARE (stdc_trailing_ones (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_trailing_ones (1uwb), ui), 1);
TEST_COMPARE (stdc_first_leading_zero (0uwb), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero (0uwb), ui), 1);
TEST_COMPARE (stdc_first_leading_zero (1uwb), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero (1uwb), ui), 1);
TEST_COMPARE (stdc_first_leading_one (0uwb), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one (0uwb), ui), 1);
TEST_COMPARE (stdc_first_leading_one (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_one (1uwb), ui), 1);
TEST_COMPARE (stdc_first_trailing_zero (0uwb), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero (0uwb), ui), 1);
TEST_COMPARE (stdc_first_trailing_zero (1uwb), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero (1uwb), ui), 1);
TEST_COMPARE (stdc_first_trailing_one (0uwb), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one (0uwb), ui), 1);
TEST_COMPARE (stdc_first_trailing_one (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one (1uwb), ui), 1);
TEST_COMPARE (stdc_count_zeros (0uwb), 1);
TEST_COMPARE (expr_has_type (stdc_count_zeros (0uwb), ui), 1);
TEST_COMPARE (stdc_count_zeros (1uwb), 0);
TEST_COMPARE (expr_has_type (stdc_count_zeros (1uwb), ui), 1);
TEST_COMPARE (stdc_count_ones (0uwb), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones (0uwb), ui), 1);
TEST_COMPARE (stdc_count_ones (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_count_ones (1uwb), ui), 1);
TEST_COMPARE (stdc_has_single_bit (0uwb), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit (0uwb), _Bool), 1);
TEST_COMPARE (stdc_has_single_bit (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_has_single_bit (1uwb), _Bool), 1);
TEST_COMPARE (stdc_bit_width (0uwb), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width (0uwb), ui), 1);
TEST_COMPARE (stdc_bit_width (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_bit_width (1uwb), ui), 1);
TEST_COMPARE (stdc_bit_floor (0uwb), 0);
TEST_COMPARE (expr_has_type (stdc_bit_floor (0uwb), unsigned _BitInt(1)), 1);
TEST_COMPARE (stdc_bit_floor (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_bit_floor (1uwb), unsigned _BitInt(1)), 1);
TEST_COMPARE (stdc_bit_ceil (0uwb), 1);
TEST_COMPARE (expr_has_type (stdc_bit_ceil (0uwb), unsigned _BitInt(1)), 1);
TEST_COMPARE (stdc_bit_ceil (1uwb), 1);
TEST_COMPARE (expr_has_type (stdc_bit_ceil (1uwb), unsigned _BitInt(1)), 1);
unsigned _BitInt(1) c = 0;
TEST_COMPARE (stdc_bit_floor (c++), 0);
TEST_COMPARE (c, 1);
TEST_COMPARE (stdc_bit_floor (c++), 1);
TEST_COMPARE (c, 0);
TEST_COMPARE (stdc_bit_ceil (c++), 1);
TEST_COMPARE (c, 1);
TEST_COMPARE (stdc_bit_ceil (c++), 1);
TEST_COMPARE (c, 0);
# endif
# if BITINT_MAXWIDTH >= 512
TEST_COMPARE (stdc_leading_zeros ((unsigned _BitInt(512)) 0), 512);
TEST_COMPARE (expr_has_type (stdc_leading_zeros ((unsigned _BitInt(512)) 0),
ui), 1);
TEST_COMPARE (stdc_leading_zeros ((unsigned _BitInt(373)) 0), 373);
TEST_COMPARE (expr_has_type (stdc_leading_zeros ((unsigned _BitInt(373)) 0),
ui), 1);
TEST_COMPARE (stdc_leading_zeros (~(unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (stdc_leading_zeros (~(unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (stdc_leading_zeros ((unsigned _BitInt(512)) 275), 512 - 9);
TEST_COMPARE (stdc_leading_zeros ((unsigned _BitInt(373)) 512), 373 - 10);
TEST_COMPARE (stdc_leading_ones ((unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones ((unsigned _BitInt(512)) 0),
ui), 1);
TEST_COMPARE (stdc_leading_ones ((unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_leading_ones ((unsigned _BitInt(373)) 0),
ui), 1);
TEST_COMPARE (stdc_leading_ones (~(unsigned _BitInt(512)) 0), 512);
TEST_COMPARE (stdc_leading_ones (~(unsigned _BitInt(373)) 0), 373);
TEST_COMPARE (stdc_leading_ones (~(unsigned _BitInt(512)) 275), 512 - 9);
TEST_COMPARE (stdc_leading_ones (~(unsigned _BitInt(373)) 512), 373 - 10);
TEST_COMPARE (stdc_trailing_zeros ((unsigned _BitInt(512)) 0), 512);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros ((unsigned _BitInt(512)) 0),
ui), 1);
TEST_COMPARE (stdc_trailing_zeros ((unsigned _BitInt(373)) 0), 373);
TEST_COMPARE (expr_has_type (stdc_trailing_zeros ((unsigned _BitInt(373)) 0),
ui), 1);
TEST_COMPARE (stdc_trailing_zeros (~(unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (stdc_trailing_zeros (~(unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (stdc_trailing_zeros ((unsigned _BitInt(512)) 256), 8);
TEST_COMPARE (stdc_trailing_zeros ((unsigned _BitInt(373)) 512), 9);
TEST_COMPARE (stdc_trailing_ones ((unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones ((unsigned _BitInt(512)) 0),
ui), 1);
TEST_COMPARE (stdc_trailing_ones ((unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_trailing_ones ((unsigned _BitInt(373)) 0),
ui), 1);
TEST_COMPARE (stdc_trailing_ones (~(unsigned _BitInt(512)) 0), 512);
TEST_COMPARE (stdc_trailing_ones (~(unsigned _BitInt(373)) 0), 373);
TEST_COMPARE (stdc_trailing_ones ((unsigned _BitInt(512)) 255), 8);
TEST_COMPARE (stdc_trailing_ones ((~(unsigned _BitInt(373)) 0) >> 2),
373 - 2);
TEST_COMPARE (stdc_first_leading_zero ((unsigned _BitInt(512)) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero ((unsigned _BitInt(512))
0), ui), 1);
TEST_COMPARE (stdc_first_leading_zero ((unsigned _BitInt(373)) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_leading_zero ((unsigned _BitInt(373))
0), ui), 1);
TEST_COMPARE (stdc_first_leading_zero (~(unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (stdc_first_leading_zero (~(unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (stdc_first_leading_zero (~(unsigned _BitInt(512)) 511),
512 - 8);
TEST_COMPARE (stdc_first_leading_zero (~(unsigned _BitInt(373)) 1023),
373 - 9);
TEST_COMPARE (stdc_first_leading_one ((unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one ((unsigned _BitInt(512))
0), ui), 1);
TEST_COMPARE (stdc_first_leading_one ((unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_leading_one ((unsigned _BitInt(373))
0), ui), 1);
TEST_COMPARE (stdc_first_leading_one (~(unsigned _BitInt(512)) 0), 1);
TEST_COMPARE (stdc_first_leading_one (~(unsigned _BitInt(373)) 0), 1);
TEST_COMPARE (stdc_first_leading_one ((unsigned _BitInt(512)) 275), 512 - 8);
TEST_COMPARE (stdc_first_leading_one ((unsigned _BitInt(373)) 512), 373 - 9);
TEST_COMPARE (stdc_first_trailing_zero ((unsigned _BitInt(512)) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero ((unsigned
_BitInt(512)) 0),
ui), 1);
TEST_COMPARE (stdc_first_trailing_zero ((unsigned _BitInt(373)) 0), 1);
TEST_COMPARE (expr_has_type (stdc_first_trailing_zero ((unsigned
_BitInt(373)) 0),
ui), 1);
TEST_COMPARE (stdc_first_trailing_zero (~(unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (stdc_first_trailing_zero (~(unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (stdc_first_trailing_zero ((unsigned _BitInt(512)) 255), 9);
TEST_COMPARE (stdc_first_trailing_zero ((unsigned _BitInt(373)) 511), 10);
TEST_COMPARE (stdc_first_trailing_one ((unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one ((unsigned _BitInt(512))
0), ui), 1);
TEST_COMPARE (stdc_first_trailing_one ((unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_first_trailing_one ((unsigned _BitInt(373))
0), ui), 1);
TEST_COMPARE (stdc_first_trailing_one (~(unsigned _BitInt(512)) 0), 1);
TEST_COMPARE (stdc_first_trailing_one (~(unsigned _BitInt(373)) 0), 1);
TEST_COMPARE (stdc_first_trailing_one (((unsigned _BitInt(512)) 255) << 175),
176);
TEST_COMPARE (stdc_first_trailing_one ((~(unsigned _BitInt(373)) 0) << 311),
312);
TEST_COMPARE (stdc_count_zeros ((unsigned _BitInt(512)) 0), 512);
TEST_COMPARE (expr_has_type (stdc_count_zeros ((unsigned _BitInt(512)) 0),
ui), 1);
TEST_COMPARE (stdc_count_zeros ((unsigned _BitInt(373)) 0), 373);
TEST_COMPARE (expr_has_type (stdc_count_zeros ((unsigned _BitInt(373)) 0),
ui), 1);
TEST_COMPARE (stdc_count_zeros (~(unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (stdc_count_zeros (~(unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (stdc_count_zeros ((unsigned _BitInt(512)) 1315), 512 - 5);
TEST_COMPARE (stdc_count_zeros ((unsigned _BitInt(373)) 3363), 373 - 6);
TEST_COMPARE (stdc_count_ones ((unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones ((unsigned _BitInt(512)) 0),
ui), 1);
TEST_COMPARE (stdc_count_ones ((unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_count_ones ((unsigned _BitInt(373)) 0),
ui), 1);
TEST_COMPARE (stdc_count_ones (~(unsigned _BitInt(512)) 0), 512);
TEST_COMPARE (stdc_count_ones (~(unsigned _BitInt(373)) 0), 373);
TEST_COMPARE (stdc_count_ones (~(unsigned _BitInt(512)) 1315), 512 - 5);
TEST_COMPARE (stdc_count_ones (~(unsigned _BitInt(373)) 3363), 373 - 6);
TEST_COMPARE (stdc_has_single_bit ((unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit ((unsigned _BitInt(512)) 0),
_Bool), 1);
TEST_COMPARE (stdc_has_single_bit ((unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_has_single_bit ((unsigned _BitInt(373)) 0),
_Bool), 1);
TEST_COMPARE (stdc_has_single_bit (~(unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (stdc_has_single_bit (~(unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (stdc_has_single_bit (((unsigned _BitInt(512)) 1022) << 279),
0);
TEST_COMPARE (stdc_has_single_bit (((unsigned _BitInt(373)) 12) << 305), 0);
TEST_COMPARE (stdc_bit_width ((unsigned _BitInt(512)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width ((unsigned _BitInt(512)) 0),
ui), 1);
TEST_COMPARE (stdc_bit_width ((unsigned _BitInt(373)) 0), 0);
TEST_COMPARE (expr_has_type (stdc_bit_width ((unsigned _BitInt(373)) 0),
ui), 1);
TEST_COMPARE (stdc_bit_width (~(unsigned _BitInt(512)) 0), 512);
TEST_COMPARE (stdc_bit_width (~(unsigned _BitInt(373)) 0), 373);
TEST_COMPARE (stdc_bit_width (((unsigned _BitInt(512)) 1023) << 405),
405 + 10);
TEST_COMPARE (stdc_bit_width (((unsigned _BitInt(373)) 1024) << 242),
242 + 11);
TEST_COMPARE (stdc_bit_floor ((unsigned _BitInt(512)) 0) != 0, 0);
TEST_COMPARE (expr_has_type (stdc_bit_floor ((unsigned _BitInt(512)) 0),
unsigned _BitInt(512)), 1);
TEST_COMPARE (stdc_bit_floor ((unsigned _BitInt(373)) 0) != 0, 0);
TEST_COMPARE (expr_has_type (stdc_bit_floor ((unsigned _BitInt(373)) 0),
unsigned _BitInt(373)), 1);
TEST_COMPARE (stdc_bit_floor (~(unsigned _BitInt(512)) 0)
!= ((unsigned _BitInt(512)) 1) << (512 - 1), 0);
TEST_COMPARE (stdc_bit_floor (~(unsigned _BitInt(373)) 0)
!= ((unsigned _BitInt(373)) 1) << (373 - 1), 0);
TEST_COMPARE (stdc_bit_floor (((unsigned _BitInt(512)) 511) << 405)
!= (((unsigned _BitInt(512)) 256) << 405), 0);
TEST_COMPARE (stdc_bit_floor (((unsigned _BitInt(373)) 512) << 242)
!= (((unsigned _BitInt(512)) 512) << 242), 0);
TEST_COMPARE (stdc_bit_ceil ((unsigned _BitInt(512)) 0) != 1, 0);
TEST_COMPARE (expr_has_type (stdc_bit_ceil ((unsigned _BitInt(512)) 0),
unsigned _BitInt(512)), 1);
TEST_COMPARE (stdc_bit_ceil ((unsigned _BitInt(373)) 0) != 1, 0);
TEST_COMPARE (expr_has_type (stdc_bit_ceil ((unsigned _BitInt(373)) 0),
unsigned _BitInt(373)), 1);
TEST_COMPARE (stdc_bit_ceil (~(unsigned _BitInt(512)) 0) != 0, 0);
TEST_COMPARE (stdc_bit_ceil (~(unsigned _BitInt(373)) 0) != 0, 0);
TEST_COMPARE (stdc_bit_ceil (((unsigned _BitInt(512)) 1) << (512 - 1))
!= ((unsigned _BitInt(512)) 1) << (512 - 1), 0);
TEST_COMPARE (stdc_bit_ceil ((~(unsigned _BitInt(373)) 0) >> 1)
!= ((unsigned _BitInt(373)) 1) << (373 - 1), 0);
TEST_COMPARE (stdc_bit_ceil (((unsigned _BitInt(512)) 512) << 405)
!= (((unsigned _BitInt(512)) 512) << 405), 0);
TEST_COMPARE (stdc_bit_ceil (((unsigned _BitInt(373)) 513) << 242)
!= (((unsigned _BitInt(512)) 1024) << 242), 0);
TEST_COMPARE (stdc_bit_floor ((unsigned _BitInt(BITINT_MAXWIDTH)) 0) != 0,
0);
TEST_COMPARE (stdc_bit_floor (~(unsigned _BitInt(BITINT_MAXWIDTH)) 0)
!= ((unsigned _BitInt(BITINT_MAXWIDTH)) 1) << (BITINT_MAXWIDTH
- 1), 0);
TEST_COMPARE (stdc_bit_floor (((unsigned _BitInt(BITINT_MAXWIDTH)) 511)
<< 405)
!= (((unsigned _BitInt(BITINT_MAXWIDTH)) 256) << 405), 0);
TEST_COMPARE (stdc_bit_floor (((unsigned _BitInt(BITINT_MAXWIDTH)) 512)
<< 405)
!= (((unsigned _BitInt(BITINT_MAXWIDTH)) 512) << 405), 0);
TEST_COMPARE (stdc_bit_ceil ((unsigned _BitInt(BITINT_MAXWIDTH)) 0) != 1, 0);
TEST_COMPARE (stdc_bit_ceil (~(unsigned _BitInt(BITINT_MAXWIDTH)) 0) != 0,
0);
TEST_COMPARE (stdc_bit_ceil (((unsigned _BitInt(BITINT_MAXWIDTH)) 1)
<< (BITINT_MAXWIDTH - 1))
!= ((unsigned _BitInt(BITINT_MAXWIDTH)) 1) << (BITINT_MAXWIDTH
- 1), 0);
TEST_COMPARE (stdc_bit_ceil (((unsigned _BitInt(BITINT_MAXWIDTH)) 512)
<< 405)
!= (((unsigned _BitInt(BITINT_MAXWIDTH)) 512) << 405), 0);
TEST_COMPARE (stdc_bit_ceil (((unsigned _BitInt(BITINT_MAXWIDTH)) 513)
<< 405)
!= (((unsigned _BitInt(BITINT_MAXWIDTH)) 1024) << 405), 0);
# endif
# endif
return 0;
}
#else
static int
do_test (void)
{
return 0;
}
#endif
#include <support/test-driver.c>