e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup bli
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*/
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#include "BLI_math_inline.h"
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#include "BLI_utildefines.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Search the value from LSB to MSB for a set bit. Returns index of this bit. */
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MINLINE int bitscan_forward_i(int a);
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MINLINE unsigned int bitscan_forward_uint(unsigned int a);
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MINLINE unsigned int bitscan_forward_uint64(unsigned long long a);
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/* Similar to above, but also clears the bit. */
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MINLINE int bitscan_forward_clear_i(int *a);
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MINLINE unsigned int bitscan_forward_clear_uint(unsigned int *a);
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/* Search the value from MSB to LSB for a set bit. Returns index of this bit. */
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MINLINE int bitscan_reverse_i(int a);
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MINLINE unsigned int bitscan_reverse_uint(unsigned int a);
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MINLINE unsigned int bitscan_reverse_uint64(unsigned long long a);
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/* Similar to above, but also clears the bit. */
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MINLINE int bitscan_reverse_clear_i(int *a);
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MINLINE unsigned int bitscan_reverse_clear_uint(unsigned int *a);
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/* NOTE: Those functions returns 2 to the power of index of highest order bit. */
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MINLINE unsigned int highest_order_bit_uint(unsigned int n);
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MINLINE unsigned short highest_order_bit_s(unsigned short n);
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#ifdef __GNUC__
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# define count_bits_i(i) __builtin_popcount(i)
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#else
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MINLINE int count_bits_i(unsigned int n);
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#endif
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MINLINE int float_as_int(float f);
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MINLINE unsigned int float_as_uint(float f);
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MINLINE float int_as_float(int i);
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MINLINE float uint_as_float(unsigned int i);
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MINLINE float xor_fl(float x, int y);
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#if BLI_MATH_DO_INLINE
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# include "intern/math_bits_inline.c"
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#endif
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#ifdef __cplusplus
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}
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#endif
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