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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: some of this file.
*
* ***** END GPL LICENSE BLOCK *****
* */
#ifndef __BLI_MATH_BASE_H__
#define __BLI_MATH_BASE_H__
/** \file BLI_math_base.h
* \ingroup bli
*/
#ifdef _MSC_VER
# define _USE_MATH_DEFINES
#endif
#include <math.h>
#include "BLI_math_inline.h"
#ifdef __sun__
#include <ieeefp.h> /* for finite() */
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_PI_2
#define M_PI_2 1.57079632679489661923
#endif
#ifndef M_SQRT2
#define M_SQRT2 1.41421356237309504880
#endif
#ifndef M_SQRT1_2
#define M_SQRT1_2 0.70710678118654752440
#endif
#ifndef M_SQRT3
#define M_SQRT3 1.7320508075688772
#endif
#ifndef M_1_PI
#define M_1_PI 0.318309886183790671538
#endif
#ifndef M_E
#define M_E 2.7182818284590452354
#endif
#ifndef M_LOG2E
#define M_LOG2E 1.4426950408889634074
#endif
#ifndef M_LOG10E
#define M_LOG10E 0.43429448190325182765
#endif
#ifndef M_LN2
#define M_LN2 0.69314718055994530942
#endif
#ifndef M_LN10
#define M_LN10 2.30258509299404568402
#endif
/* non-standard defines, used in some places */
#ifndef MAXFLOAT
#define MAXFLOAT ((float)3.40282347e+38)
#endif
#ifndef sqrtf
#define sqrtf(a) ((float)sqrt(a))
#endif
#ifndef powf
#define powf(a, b) ((float)pow(a, b))
#endif
#ifndef cosf
#define cosf(a) ((float)cos(a))
#endif
#ifndef sinf
#define sinf(a) ((float)sin(a))
#endif
#ifndef acosf
#define acosf(a) ((float)acos(a))
#endif
#ifndef asinf
#define asinf(a) ((float)asin(a))
#endif
#ifndef atan2f
#define atan2f(a, b) ((float)atan2(a, b))
#endif
#ifndef tanf
#define tanf(a) ((float)tan(a))
#endif
#ifndef atanf
#define atanf(a) ((float)atan(a))
#endif
#ifndef floorf
#define floorf(a) ((float)floor(a))
#endif
#ifndef ceilf
#define ceilf(a) ((float)ceil(a))
#endif
#ifndef fabsf
#define fabsf(a) ((float)fabs(a))
#endif
#ifndef logf
#define logf(a) ((float)log(a))
#endif
#ifndef expf
#define expf(a) ((float)exp(a))
#endif
#ifndef fmodf
#define fmodf(a, b) ((float)fmod(a, b))
#endif
#ifndef hypotf
#define hypotf(a, b) ((float)hypot(a, b))
#endif
#ifdef WIN32
# ifndef FREE_WINDOWS
# define isnan(n) _isnan(n)
# define finite _finite
# define hypot _hypot
# endif
#endif
/* Causes warning:
* incompatible types when assigning to type 'Foo' from type 'Bar'
* ... the compiler optimizes away the temp var */
#ifndef CHECK_TYPE
#ifdef __GNUC__
#define CHECK_TYPE(var, type) { \
__typeof(var) *__tmp; \
__tmp = (type *)NULL; \
(void)__tmp; \
} (void)0
#else
#define CHECK_TYPE(var, type)
#endif
#endif
#ifndef SWAP
# define SWAP(type, a, b) { \
type sw_ap; \
CHECK_TYPE(a, type); \
CHECK_TYPE(b, type); \
sw_ap = (a); \
(a) = (b); \
(b) = sw_ap; \
} (void)0
#endif
#ifndef CLAMP
# define CLAMP(a, b, c) { \
if ((a) < (b)) (a) = (b); \
else if ((a) > (c)) (a) = (c); \
} (void)0
#endif
#if BLI_MATH_DO_INLINE
#include "intern/math_base_inline.c"
#endif
/******************************* Float ******************************/
MINLINE float sqrt3f(float f);
MINLINE double sqrt3d(double d);
MINLINE float saacosf(float f);
MINLINE float saasinf(float f);
MINLINE float sasqrtf(float f);
MINLINE float saacos(float fac);
MINLINE float saasin(float fac);
MINLINE float sasqrt(float fac);
MINLINE float interpf(float a, float b, float t);
MINLINE float min_ff(float a, float b);
MINLINE float max_ff(float a, float b);
MINLINE int min_ii(int a, int b);
MINLINE int max_ii(int a, int b);
MINLINE float signf(float f);
MINLINE float power_of_2(float f);
/* these don't really fit anywhere but were being copied about a lot */
MINLINE int is_power_of_2_i(int n);
MINLINE int power_of_2_max_i(int n);
MINLINE int power_of_2_min_i(int n);
MINLINE float shell_angle_to_dist(const float angle);
#if (defined(WIN32) || defined(WIN64)) && !defined(FREE_WINDOWS)
extern double copysign(double x, double y);
extern double round(double x);
#endif
double double_round(double x, int ndigits);
#endif /* __BLI_MATH_BASE_H__ */
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