/*

 *      Machine dependent defines/includes for LAME.

 *

 *      Copyright (c) 1999 A.L. Faber

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

#ifndef LAME_MACHINE_H

#define LAME_MACHINE_H

#include "version.h"

#include <stdio.h>

#include <assert.h>

#ifdef STDC_HEADERS

# include <stdlib.h>

# include <string.h>

#else

# ifndef HAVE_STRCHR

#  define strchr index

#  define strrchr rindex

# endif

char   *strchr(), *strrchr();

# ifndef HAVE_MEMCPY

#  define memcpy(d, s, n) bcopy ((s), (d), (n))

#  define memmove(d, s, n) bcopy ((s), (d), (n))

# endif

#endif

#if  defined(__riscos__)  &&  defined(FPA10)

# include "ymath.h"

#else

# include <math.h>

#endif

#include <limits.h>

#include <ctype.h>

#ifdef HAVE_ERRNO_H

# include <errno.h>

#endif

#ifdef HAVE_FCNTL_H

# include <fcntl.h>

#endif

#if defined(macintosh)

# include <types.h>

# include <stat.h>

#else

# include <sys/types.h>

# include <sys/stat.h>

#endif

#ifdef HAVE_INTTYPES_H

# include <inttypes.h>

#else

# ifdef HAVE_STDINT_H

#  include <stdint.h>

# endif

#endif

#ifdef WITH_DMALLOC

#include <dmalloc.h>

#endif

/*

 * 3 different types of pow() functions:

 *   - table lookup

 *   - pow()

 *   - exp()   on some machines this is claimed to be faster than pow()

 */

#define POW20(x) (assert(0 <= (x+Q_MAX2) && x < Q_MAX), pow20[x+Q_MAX2])

/*#define POW20(x)  pow(2.0,((double)(x)-210)*.25) */

/*#define POW20(x)  exp( ((double)(x)-210)*(.25*LOG2) ) */

#define IPOW20(x)  (assert(0 <= x && x < Q_MAX), ipow20[x])

/*#define IPOW20(x)  exp( -((double)(x)-210)*.1875*LOG2 ) */

/*#define IPOW20(x)  pow(2.0,-((double)(x)-210)*.1875) */

/* in case this is used without configure */

#ifndef inline

# define inline

#endif

#if defined(_MSC_VER)

# undef inline

# define inline _inline

#elif defined(__SASC) || defined(__GNUC__) || defined(__ICC) || defined(__ECC)

/* if __GNUC__ we always want to inline, not only if the user requests it */

# undef inline

# define inline __inline

#endif

#if    defined(_MSC_VER)

# pragma warning( disable : 4244 )

/*# pragma warning( disable : 4305 ) */

#endif

/*

 * FLOAT    for variables which require at least 32 bits

 * FLOAT8   for variables which require at least 64 bits

 *

 * On some machines, 64 bit will be faster than 32 bit.  Also, some math

 * routines require 64 bit float, so setting FLOAT=float will result in a

 * lot of conversions.

 */

#if ( defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__) )

# define WIN32_LEAN_AND_MEAN

# include <windows.h>

# include <float.h>

# define FLOAT_MAX FLT_MAX

#else

# ifndef FLOAT

typedef float FLOAT;

#  ifdef FLT_MAX

#   define FLOAT_MAX FLT_MAX

#  else

#   define FLOAT_MAX 1e37 /* approx */

#  endif

# endif

#endif

#ifndef FLOAT8

typedef double FLOAT8;

# ifdef DBL_MAX

#  define FLOAT8_MAX DBL_MAX

# else

#  define FLOAT8_MAX 1e99 /* approx */

# endif

#else

# ifdef FLT_MAX

#  define FLOAT8_MAX FLT_MAX

# else

#  define FLOAT8_MAX 1e37 /* approx */

# endif

#endif

/* sample_t must be floating point, at least 32 bits */

typedef FLOAT sample_t;

#define dimension_of(array) (sizeof(array)/sizeof(array[0]))

#define beyond(array) (array+dimension_of(array))

#define compiletime_assert(expression) enum{static_assert_##FILE##_##LINE = 1/((expression)?1:0)}

#define lame_calloc(TYPE, COUNT) ((TYPE*)calloc(COUNT, sizeof(TYPE)))

#define multiple_of(CHUNK, COUNT) (\

  ( (COUNT) < 1 || (CHUNK) < 1 || (COUNT) % (CHUNK) == 0 ) \

  ? (COUNT) \

  : ((COUNT) + (CHUNK) - (COUNT) % (CHUNK)) \

  )

#if 1

#define EQ(a,b) (\

(fabs(a) > fabs(b)) \

 ? (fabs((a)-(b)) <= (fabs(a) * 1e-6f)) \

 : (fabs((a)-(b)) <= (fabs(b) * 1e-6f)))

#else

#define EQ(a,b) (fabs((a)-(b))<1E-37)

#endif

#define NEQ(a,b) (!EQ(a,b))

#ifdef _MSC_VER

#  if _MSC_VER < 1400

#  define fabsf fabs

#  define powf pow

#  define log10f log10

#  endif

#endif

#endif

/* end of machine.h */