28c3476b3b
So it can be used in C code while other BLI code is converted to C++, and so DNA headers can include it without pulling in full BLI_math_rotation.h. Pull Request: https://projects.blender.org/blender/blender/pulls/134406
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
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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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/* On Windows we have to include math.h before defining our own constants, to
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* avoid warnings about redefinition. This can likely be simplified later when
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* code is fully converted to C++, not defining our own constants at all. */
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#if defined(_MSC_VER) && !defined(_USE_MATH_DEFINES)
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# define _USE_MATH_DEFINES
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#endif
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#include <math.h> /* IWYU pragma: export */
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#ifndef M_PI
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# define M_PI 3.14159265358979323846 /* `pi` */
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#endif
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#ifndef M_PI_2
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# define M_PI_2 1.57079632679489661923 /* `pi/2` */
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#endif
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#ifndef M_PI_4
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# define M_PI_4 0.78539816339744830962 /* `pi/4` */
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#endif
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#ifndef M_SQRT2
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# define M_SQRT2 1.41421356237309504880 /* `sqrt(2)` */
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#endif
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#ifndef M_SQRT1_2
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# define M_SQRT1_2 0.70710678118654752440 /* `1/sqrt(2)` */
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#endif
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#ifndef M_SQRT3
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# define M_SQRT3 1.73205080756887729352 /* `sqrt(3)` */
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#endif
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#ifndef M_SQRT1_3
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# define M_SQRT1_3 0.57735026918962576450 /* `1/sqrt(3)` */
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#endif
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#ifndef M_1_PI
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# define M_1_PI 0.318309886183790671538 /* `1/pi` */
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#endif
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#ifndef M_E
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# define M_E 2.7182818284590452354 /* `e` */
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#endif
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#ifndef M_LOG2E
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# define M_LOG2E 1.4426950408889634074 /* `log_2 e` */
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#endif
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#ifndef M_LOG10E
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# define M_LOG10E 0.43429448190325182765 /* `log_10 e` */
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#endif
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#ifndef M_LN2
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# define M_LN2 0.69314718055994530942 /* `log_e 2` */
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#endif
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#ifndef M_LN10
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# define M_LN10 2.30258509299404568402 /* `log_e 10` */
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#endif
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#if defined(_MSC_VER) && !defined(_MATH_DEFINES_DEFINED)
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# define _MATH_DEFINES_DEFINED
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#endif
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/* -------------------------------------------------------------------- */
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/** \name Conversion Defines
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* \{ */
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#define RAD2DEG(_rad) ((_rad) * (180.0 / M_PI))
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#define DEG2RAD(_deg) ((_deg) * (M_PI / 180.0))
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#define RAD2DEGF(_rad) ((_rad) * (float)(180.0 / M_PI))
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#define DEG2RADF(_deg) ((_deg) * (float)(M_PI / 180.0))
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/** \} */
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