Files
test2/source/blender/blenlib/BLI_math_bits.h
Brecht Van Lommel 920e709069 Refactor: Make header files more clangd and clang-tidy friendly
When using clangd or running clang-tidy on headers there are
currently many errors. These are noisy in IDEs, make auto fixes
impossible, and break features like code completion, refactoring
and navigation.

This makes source/blender headers work by themselves, which is
generally the goal anyway. But #includes and forward declarations
were often incomplete.

* Add #includes and forward declarations
* Add IWYU pragma: export in a few places
* Remove some unused #includes (but there are many more)
* Tweak ShaderCreateInfo macros to work better with clangd

Some types of headers still have errors, these could be fixed or
worked around with more investigation. Mostly preprocessor
template headers like NOD_static_types.h.

Note that that disabling WITH_UNITY_BUILD is required for clangd to
work properly, otherwise compile_commands.json does not contain
the information for the relevant source files.

For more details see the developer docs:
https://developer.blender.org/docs/handbook/tooling/clangd/

Pull Request: https://projects.blender.org/blender/blender/pulls/132608
2025-01-07 12:39:13 +01:00

70 lines
1.9 KiB
C

/* SPDX-FileCopyrightText: 2023 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
#pragma once
/** \file
* \ingroup bli
*/
#include "BLI_build_config.h"
#include "BLI_math_inline.h"
#include "BLI_utildefines.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Search the value from LSB to MSB for a set bit. Returns index of this bit. */
MINLINE int bitscan_forward_i(int a);
MINLINE unsigned int bitscan_forward_uint(unsigned int a);
MINLINE unsigned int bitscan_forward_uint64(unsigned long long a);
/* Similar to above, but also clears the bit. */
MINLINE int bitscan_forward_clear_i(int *a);
MINLINE unsigned int bitscan_forward_clear_uint(unsigned int *a);
/* Search the value from MSB to LSB for a set bit. Returns index of this bit. */
MINLINE int bitscan_reverse_i(int a);
MINLINE unsigned int bitscan_reverse_uint(unsigned int a);
MINLINE unsigned int bitscan_reverse_uint64(unsigned long long a);
/* Similar to above, but also clears the bit. */
MINLINE int bitscan_reverse_clear_i(int *a);
MINLINE unsigned int bitscan_reverse_clear_uint(unsigned int *a);
/* NOTE: Those functions returns 2 to the power of index of highest order bit. */
MINLINE unsigned int highest_order_bit_uint(unsigned int n);
MINLINE unsigned short highest_order_bit_s(unsigned short n);
#if COMPILER_GCC || COMPILER_CLANG
# define count_bits_i(i) __builtin_popcount(i)
# define count_bits_uint64(i) __builtin_popcountll(i)
#elif COMPILER_MSVC
# define count_bits_i(i) __popcnt(i)
# define count_bits_uint64(i) __popcnt64(i)
#else
MINLINE int count_bits_i(unsigned int n);
MINLINE int count_bits_uint64(uint64_t a);
#endif
MINLINE int float_as_int(float f);
MINLINE unsigned int float_as_uint(float f);
MINLINE float int_as_float(int i);
MINLINE float uint_as_float(unsigned int i);
MINLINE float xor_fl(float x, int y);
#if BLI_MATH_DO_INLINE
# include "intern/math_bits_inline.c" // IWYU pragma: export
#endif
#ifdef __cplusplus
}
#endif