cxtypes.h

/*
 * This file is part of the ESO C Extension Library
 * Copyright (C) 2001-2026 European Southern Observatory
 *
 * This 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.
 *
 * This 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 this library; if not, see <https://www.gnu.org/licenses/>.
 */
 
#ifndef _CX_TYPES_H
#define _CX_TYPES_H
 
#include "cxconfig.h"
#include "cxmacros.h"
 
 
CX_BEGIN_DECLS
 
/*
 * Some mathematical constants. Some strict ISO C implementations
 * don't provide them as symbols. The constants provide enough
 * digits for the 128 bit IEEE quad
 */
 
#define CX_E     2.7182818284590452353602874713526625L
#define CX_LN2   0.6931471805599453094172321214581766L
#define CX_LN10  2.3025850929940456840179914546843642L
#define CX_PI    3.1415926535897932384626433832795029L
#define CX_PI_2  1.5707963267948966192313216916397514L
#define CX_PI_4  0.7853981633974483096156608458198757L
#define CX_SQRT2 1.4142135623730950488016887242096981L
 
 
/*
 * Minimum and maximum constants for fixed size integer types
 */
 
#define CX_MININT8   ((cxint8)0x80)
#define CX_MAXINT8   ((cxint8)0x7f)
#define CX_MAXUINT8  ((cxuint8)0xff)
 
#define CX_MININT16  ((cxint16)0x8000)
#define CX_MAXINT16  ((cxint16)0x7fff)
#define CX_MAXUINT16 ((cxuint16)0xffff)
 
#define CX_MININT32  ((cxint32)0x80000000)
#define CX_MAXINT32  ((cxint32)0x7fffffff)
#define CX_MAXUINT32 ((cxuint32)0xffffffff)
 
#define CX_MININT64  ((cxint64)CX_INT64_CONSTANT(0x8000000000000000))
#define CX_MAXINT64  CX_INT64_CONSTANT(0x7fffffffffffffff)
#define CX_MAXUINT64 CX_INT64_CONSTANT(0xffffffffffffffffU)
 
 
/*
 * For completeness: Definitions for standard types
 */
 
typedef char cxchar;
typedef short cxshort;
typedef int cxint;
typedef long cxlong;
typedef long long cxllong;
typedef cxint cxbool;
 
typedef unsigned char cxuchar;
typedef unsigned short cxushort;
typedef unsigned int cxuint;
typedef unsigned long cxulong;
typedef unsigned long long cxullong;
typedef cxuchar cxbyte;
 
typedef float cxfloat;
typedef double cxdouble;
 
typedef void *cxptr;
typedef const void *cxcptr;
 
 
/*
 * Generic, frequently used types.
 */
 
typedef cxint (*cx_compare_func)(cxcptr a, cxcptr b);
typedef cxint (*cx_compare_data_func)(cxcptr a, cxcptr b, cxptr data);
typedef cxbool (*cx_equal_func)(cxcptr a, cxcptr b);
typedef void (*cx_free_func)(cxptr data);
 
CX_END_DECLS
 
#endif /* _CX_TYPES_H */