cairo-wideint-private.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/* cairo - a vector graphics library with display and print output
 *
 * Copyright © 2004 Keith Packard
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * The original code as contributed to the cairo library under
 * the dual license MPL+LGPL. We used the LGPL relicensing clause to
 * get a GPL version of this code which now lives here. This header is
 * unmodified other than the licensing clause.
 *
 * The Original Code is the cairo graphics library.
 *
 * The Initial Developer of the Original Code is Keith Packard
 *
 * Contributor(s):
 *  Keith R. Packard <keithp@keithp.com>
 *
 */

#ifndef CAIRO_WIDEINT_H
#define CAIRO_WIDEINT_H

// Adapt to ns-3 environment
// Additional changes from upstream are marked with `//PDB'
#include "ns3/core-config.h"
#define cairo_private
#define HAVE_UINT64_T 1
// Implementation tags added below and in cairo-wideint.c:
// extern const char * cairo_impl64;
// extern const char * cairo_impl128;

// *NS_CHECK_STYLE_OFF*

/*for compatibility with MacOS and Cygwin*/
#ifndef HAVE_STDINT_H
#ifdef __APPLE__
#define HAVE_STDINT_H 1
#elif defined(WIN32)
#define HAVE_STDINT_H 1
#endif
#endif

#if   HAVE_STDINT_H
# include <stdint.h>
#elif HAVE_INTTYPES_H
# include <inttypes.h>
#elif HAVE_SYS_INT_TYPES_H
# include <sys/int_types.h>
#elif defined(_MSC_VER)
typedef __int8 int8_t;
typedef unsigned __int8 uint8_t;
typedef __int16 int16_t;
typedef unsigned __int16 uint16_t;
typedef __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
# ifndef HAVE_UINT64_T
#  define HAVE_UINT64_T 1
# endif
# ifndef INT16_MIN
#  define INT16_MIN     (-32767-1)
# endif
# ifndef INT16_MAX
#  define INT16_MAX     (32767)
# endif
# ifndef UINT16_MAX
#  define UINT16_MAX    (65535)
# endif
#else
#error Cannot find definitions for fixed-width integral types (uint8_t, uint32_t, etc.)
#endif

#ifdef __cplusplus
extern "C" {
#endif

/*
 * 64-bit datatypes.  Two separate implementations, one using
 * built-in 64-bit signed/unsigned types another implemented
 * as a pair of 32-bit ints
 */

//PDB preprocessor symbol 'I' conflicts with
// `#define I _Complex_I` in <complex>
// Substitute a less generic symbol here
#define cairo_I  cairo_private

#if !HAVE_UINT64_T

extern const char * cairo_impl64;

typedef struct _cairo_uint64 {
  uint32_t    lo, hi;
} cairo_uint64_t, cairo_int64_t;

cairo_uint64_t cairo_I  _cairo_uint32_to_uint64 (uint32_t i);
#define                 _cairo_uint64_to_uint32(a)  ((a).lo)
cairo_uint64_t cairo_I  _cairo_uint64_add (cairo_uint64_t a, cairo_uint64_t b);
cairo_uint64_t cairo_I  _cairo_uint64_sub (cairo_uint64_t a, cairo_uint64_t b);
cairo_uint64_t cairo_I  _cairo_uint64_mul (cairo_uint64_t a, cairo_uint64_t b);
cairo_uint64_t cairo_I  _cairo_uint32x32_64_mul (uint32_t a, uint32_t b);
cairo_uint64_t cairo_I  _cairo_uint64_lsl (cairo_uint64_t a, int shift);
cairo_uint64_t cairo_I  _cairo_uint64_rsl (cairo_uint64_t a, int shift);
cairo_uint64_t cairo_I  _cairo_uint64_rsa (cairo_uint64_t a, int shift);
int            cairo_I  _cairo_uint64_lt (cairo_uint64_t a, cairo_uint64_t b);
int            cairo_I  _cairo_uint64_eq (cairo_uint64_t a, cairo_uint64_t b);
cairo_uint64_t cairo_I  _cairo_uint64_negate (cairo_uint64_t a);
#define                 _cairo_uint64_negative(a)   (((int32_t)((a).hi)) < 0)
cairo_uint64_t cairo_I  _cairo_uint64_not (cairo_uint64_t a);

#define                 _cairo_uint64_to_int64(i)   (i)
#define                 _cairo_int64_to_uint64(i)   (i)

cairo_int64_t  cairo_I  _cairo_int32_to_int64 (int32_t i);
#define                 _cairo_int64_to_int32(a)    ((int32_t) _cairo_uint64_to_uint32 (a))
#define                 _cairo_int64_add(a,b)       _cairo_uint64_add (a,b)
#define                 _cairo_int64_sub(a,b)       _cairo_uint64_sub (a,b)
#define                 _cairo_int64_mul(a,b)       _cairo_uint64_mul (a,b)
cairo_int64_t  cairo_I  _cairo_int32x32_64_mul (int32_t a, int32_t b);
int            cairo_I  _cairo_int64_lt (cairo_uint64_t a, cairo_uint64_t b);
#define                 _cairo_int64_eq(a,b)        _cairo_uint64_eq (a,b)
#define                 _cairo_int64_lsl(a,b)       _cairo_uint64_lsl (a,b)
#define                 _cairo_int64_rsl(a,b)       _cairo_uint64_rsl (a,b)
#define                 _cairo_int64_rsa(a,b)       _cairo_uint64_rsa (a,b)
#define                 _cairo_int64_negate(a)      _cairo_uint64_negate (a)
#define                 _cairo_int64_negative(a)    (((int32_t)((a).hi)) < 0)
#define                 _cairo_int64_not(a)         _cairo_uint64_not (a)

#else

extern const char * cairo_impl64;

typedef uint64_t    cairo_uint64_t;
typedef int64_t     cairo_int64_t;

#define                 _cairo_uint32_to_uint64(i)  ((uint64_t)(i))
#define                 _cairo_uint64_to_uint32(i)  ((uint32_t)(i))
#define                 _cairo_uint64_add(a,b)      ((a) + (b))
#define                 _cairo_uint64_sub(a,b)      ((a) - (b))
#define                 _cairo_uint64_mul(a,b)      ((a) * (b))
#define                 _cairo_uint32x32_64_mul(a,b)    ((uint64_t)(a) * (b))
#define                 _cairo_uint64_lsl(a,b)      ((a) << (b))
#define                 _cairo_uint64_rsl(a,b)      ((uint64_t)(a) >> (b))
#define                 _cairo_uint64_rsa(a,b)      ((uint64_t)((int64_t)(a) >> (b)))
#define                 _cairo_uint64_lt(a,b)       ((a) < (b))
#define                 _cairo_uint64_eq(a,b)       ((a) == (b))
#define                 _cairo_uint64_negate(a)     ((uint64_t) -((int64_t)(a)))
#define                 _cairo_uint64_negative(a)   ((int64_t)(a) < 0)
#define                 _cairo_uint64_not(a)        (~(a))

#define                 _cairo_uint64_to_int64(i)   ((int64_t)(i))
#define                 _cairo_int64_to_uint64(i)   ((uint64_t)(i))

#define                 _cairo_int32_to_int64(i)    ((int64_t)(i))
#define                 _cairo_int64_to_int32(i)    ((int32_t)(i))
#define                 _cairo_int64_add(a,b)       ((a) + (b))
#define                 _cairo_int64_sub(a,b)       ((a) - (b))
#define                 _cairo_int64_mul(a,b)       ((a) * (b))
#define                 _cairo_int32x32_64_mul(a,b) ((int64_t)(a) * (b))
#define                 _cairo_int64_lt(a,b)        ((a) < (b))
#define                 _cairo_int64_eq(a,b)        ((a) == (b))
#define                 _cairo_int64_lsl(a,b)       ((a) << (b))
#define                 _cairo_int64_rsl(a,b)       ((int64_t)((uint64_t)(a) >> (b)))
#define                 _cairo_int64_rsa(a,b)       ((int64_t)(a) >> (b))
#define                 _cairo_int64_negate(a)      (-(a))
#define                 _cairo_int64_negative(a)    ((a) < 0)
#define                 _cairo_int64_not(a)         (~(a))

#endif

/*
 * 64-bit comparisons derived from lt or eq
 */
#define                 _cairo_uint64_le(a,b)       (!_cairo_uint64_gt (a,b))
#define                 _cairo_uint64_ne(a,b)       (!_cairo_uint64_eq (a,b))
#define                 _cairo_uint64_ge(a,b)       (!_cairo_uint64_lt (a,b))
#define                 _cairo_uint64_gt(a,b)       _cairo_uint64_lt (b,a)

#define                 _cairo_int64_le(a,b)        (!_cairo_int64_gt (a,b))
#define                 _cairo_int64_ne(a,b)        (!_cairo_int64_eq (a,b))
#define                 _cairo_int64_ge(a,b)        (!_cairo_int64_lt (a,b))
#define                 _cairo_int64_gt(a,b)        _cairo_int64_lt (b,a)

/*
 * As the C implementation always computes both, create
 * a function which returns both for the 'native' type as well
 */

typedef struct _cairo_uquorem64 {
  cairo_uint64_t      quo;
  cairo_uint64_t      rem;
} cairo_uquorem64_t;

typedef struct _cairo_quorem64 {
  cairo_int64_t       quo;
  cairo_int64_t       rem;
} cairo_quorem64_t;

cairo_uquorem64_t I
_cairo_uint64_divrem (cairo_uint64_t num, cairo_uint64_t den);

cairo_quorem64_t I
_cairo_int64_divrem (cairo_int64_t num, cairo_int64_t den);

/*
 * 128-bit datatypes.  Again, provide two implementations in
 * case the machine has a native 128-bit datatype.  GCC supports int128_t
 * on ia64
 */

#if !HAVE_UINT128_T

extern const char * cairo_impl128;

typedef struct cairo_uint128 {
  cairo_uint64_t      lo, hi;
} cairo_uint128_t, cairo_int128_t;

cairo_uint128_t cairo_I _cairo_uint32_to_uint128 (uint32_t i);
cairo_uint128_t cairo_I _cairo_uint64_to_uint128 (cairo_uint64_t i);
#define                 _cairo_uint128_to_uint64(a)     ((a).lo)
#define                 _cairo_uint128_to_uint32(a)     _cairo_uint64_to_uint32 (_cairo_uint128_to_uint64 (a))
cairo_uint128_t cairo_I _cairo_uint128_add (cairo_uint128_t a, cairo_uint128_t b);
cairo_uint128_t cairo_I _cairo_uint128_sub (cairo_uint128_t a, cairo_uint128_t b);
cairo_uint128_t cairo_I _cairo_uint128_mul (cairo_uint128_t a, cairo_uint128_t b);
cairo_uint128_t cairo_I _cairo_uint64x64_128_mul (cairo_uint64_t a, cairo_uint64_t b);
cairo_uint128_t cairo_I _cairo_uint128_lsl (cairo_uint128_t a, int shift);
cairo_uint128_t cairo_I _cairo_uint128_rsl (cairo_uint128_t a, int shift);
cairo_uint128_t cairo_I _cairo_uint128_rsa (cairo_uint128_t a, int shift);
int             cairo_I _cairo_uint128_lt (cairo_uint128_t a, cairo_uint128_t b);
int             cairo_I _cairo_uint128_eq (cairo_uint128_t a, cairo_uint128_t b);
cairo_uint128_t cairo_I _cairo_uint128_negate (cairo_uint128_t a);
#define                 _cairo_uint128_negative(a)  (_cairo_uint64_negative (a.hi))
cairo_uint128_t cairo_I _cairo_uint128_not (cairo_uint128_t a);

#define                 _cairo_uint128_to_int128(i)     (i)
#define                 _cairo_int128_to_uint128(i)     (i)

cairo_int128_t  cairo_I _cairo_int32_to_int128 (int32_t i);
cairo_int128_t  cairo_I _cairo_int64_to_int128 (cairo_int64_t i);
#define                 _cairo_int128_to_int64(a)   ((cairo_int64_t)(a).lo)
#define                 _cairo_int128_to_int32(a)   _cairo_int64_to_int32 (_cairo_int128_to_int64 (a))
#define                 _cairo_int128_add(a,b)      _cairo_uint128_add (a,b)
#define                 _cairo_int128_sub(a,b)      _cairo_uint128_sub (a,b)
#define                 _cairo_int128_mul(a,b)      _cairo_uint128_mul (a,b)
cairo_int128_t I _cairo_int64x64_128_mul (cairo_int64_t a, cairo_int64_t b);
#define                 _cairo_int128_lsl(a,b)      _cairo_uint128_lsl (a,b)
#define                 _cairo_int128_rsl(a,b)      _cairo_uint128_rsl (a,b)
#define                 _cairo_int128_rsa(a,b)      _cairo_uint128_rsa (a,b)
int             cairo_I _cairo_int128_lt (cairo_int128_t a, cairo_int128_t b);
#define                 _cairo_int128_eq(a,b)       _cairo_uint128_eq (a,b)
#define                 _cairo_int128_negate(a)     _cairo_uint128_negate (a)
#define                 _cairo_int128_negative(a)   (_cairo_uint128_negative (a))
#define                 _cairo_int128_not(a)        _cairo_uint128_not (a)

#else   /* !HAVE_UINT128_T */

extern const char * cairo_impl128;

typedef uint128_t       cairo_uint128_t;
typedef int128_t        cairo_int128_t;

#define                 _cairo_uint32_to_uint128(i) ((uint128_t)(i))
#define                 _cairo_uint64_to_uint128(i) ((uint128_t)(i))
#define                 _cairo_uint128_to_uint64(i) ((uint64_t)(i))
#define                 _cairo_uint128_to_uint32(i) ((uint32_t)(i))
#define                 _cairo_uint128_add(a,b)     ((a) + (b))
#define                 _cairo_uint128_sub(a,b)     ((a) - (b))
#define                 _cairo_uint128_mul(a,b)     ((a) * (b))
#define                 _cairo_uint64x64_128_mul(a,b)   ((uint128_t)(a) * (b))
#define                 _cairo_uint128_lsl(a,b)     ((a) << (b))
#define                 _cairo_uint128_rsl(a,b)     ((uint128_t)(a) >> (b))
#define                 _cairo_uint128_rsa(a,b)     ((uint128_t)((int128_t)(a) >> (b)))
#define                 _cairo_uint128_lt(a,b)      ((a) < (b))
#define                 _cairo_uint128_eq(a,b)      ((a) == (b))
#define                 _cairo_uint128_negate(a)    ((uint128_t) -((int128_t)(a)))
#define                 _cairo_uint128_negative(a)  ((int128_t)(a) < 0)
#define                 _cairo_uint128_not(a)       (~(a))

#define                 _cairo_uint128_to_int128(i) ((int128_t)(i))
#define                 _cairo_int128_to_uint128(i) ((uint128_t)(i))

#define                 _cairo_int32_to_int128(i)   ((int128_t)(i))
#define                 _cairo_int64_to_int128(i)   ((int128_t)(i))
#define                 _cairo_int128_to_int64(i)   ((int64_t)(i))
#define                 _cairo_int128_to_int32(i)   ((int32_t)(i))
#define                 _cairo_int128_add(a,b)      ((a) + (b))
#define                 _cairo_int128_sub(a,b)      ((a) - (b))
#define                 _cairo_int128_mul(a,b)      ((a) * (b))
#define                 _cairo_int64x64_128_mul(a,b) ((int128_t)(a) * (b))
#define                 _cairo_int128_lt(a,b)       ((a) < (b))
#define                 _cairo_int128_eq(a,b)       ((a) == (b))
#define                 _cairo_int128_lsl(a,b)      ((a) << (b))
#define                 _cairo_int128_rsl(a,b)      ((int128_t)((uint128_t)(a) >> (b)))
#define                 _cairo_int128_rsa(a,b)      ((int128_t)(a) >> (b))
#define                 _cairo_int128_negate(a)     (-(a))
#define                 _cairo_int128_negative(a)   ((a) < 0)
#define                 _cairo_int128_not(a)        (~(a))

#endif  /* HAVE_UINT128_T */

typedef struct _cairo_uquorem128 {
  cairo_uint128_t     quo;
  cairo_uint128_t     rem;
} cairo_uquorem128_t;

typedef struct _cairo_quorem128 {
  cairo_int128_t      quo;
  cairo_int128_t      rem;
} cairo_quorem128_t;

cairo_uquorem128_t I
_cairo_uint128_divrem (cairo_uint128_t num, cairo_uint128_t den);

cairo_quorem128_t I
_cairo_int128_divrem (cairo_int128_t num, cairo_int128_t den);

cairo_uquorem64_t I
_cairo_uint_96by64_32x64_divrem (cairo_uint128_t num,
                                 cairo_uint64_t  den);

cairo_quorem64_t I
_cairo_int_96by64_32x64_divrem (cairo_int128_t num,
                                cairo_int64_t  den);

#define                 _cairo_uint128_le(a,b)      (!_cairo_uint128_gt (a,b))
#define                 _cairo_uint128_ne(a,b)      (!_cairo_uint128_eq (a,b))
#define                 _cairo_uint128_ge(a,b)      (!_cairo_uint128_lt (a,b))
#define                 _cairo_uint128_gt(a,b)      _cairo_uint128_lt (b,a)

#define                 _cairo_int128_le(a,b)       (!_cairo_int128_gt (a,b))
#define                 _cairo_int128_ne(a,b)       (!_cairo_int128_eq (a,b))
#define                 _cairo_int128_ge(a,b)       (!_cairo_int128_lt (a,b))
#define                 _cairo_int128_gt(a,b)       _cairo_int128_lt (b,a)

#undef I

#ifdef __cplusplus
};
#endif

// *NS_CHECK_STYLE_ON*

#endif /* CAIRO_WIDEINT_H */