/************************************************************************
 *
 * xmath.h
 *
 ************************************************************************/

/*
 * Copyright (c) 2009 MediaTek Inc. All Rights Reserved.
 * --------------------
 * This software is protected by copyright and the information
 * contained herein is confidential.  The software may not be
 * copied and the information contained herein may not be used or
 * disclosed except with the written permission of MediaTek Inc.
 *
 * (c) Copyright 2001-2008 Analog Devices, Inc.  All rights reserved.
 * (c) Copyright 1992-2005 by P.J. Plauger.  ALL RIGHTS RESERVED.
 * $Revision: 1.13 $
 */

/* xmath.h internal header */
#ifndef _XMATH
#define _XMATH
#include <errno.h>
#include <math.h>
#include <stddef.h>
#include <ymath.h>

/* _C_STD_BEGIN */

		/* FLOAT PROPERTIES */
#ifndef _D0
 #define _D0     3  /* little-endian, small long doubles */
 #define _D1     2
 #define _D2     1
 #define _D3     0

 #define _DBIAS  0x3fe
 #define _DOFF   4

 #define _FBIAS  0x7e
 #define _FOFF   7
 #define _FRND   1

 #define _DLONG  0
 #define _LBIAS  0x3fe
 #define _LOFF   4

#elif _D0 == 0		/* other params defined in <yvals.h> */
 #define _D1	1	/* big-endian */
 #define _D2	2
 #define _D3	3

#else /* _D0 */
 #define _D1	2	/* little-endian */
 #define _D2	1
 #define _D3	0
#endif /* _D0 */

              /* IEEE 754 float properties */
#define _FFRAC        ((unsigned short)((unsigned int)((unsigned int)1u << (unsigned int)_FOFF) - 1u))
#define _FMASK        ((unsigned short)(0x7fffu & (unsigned int)(~(unsigned int)_FFRAC)))
#define _FMAX ((unsigned short)((unsigned short)(1u << (15u - (unsigned int)_FOFF)) - 1u))
#define _FSIGN        ((unsigned short)0x8000)
#define FSIGN(x)      (((unsigned short *)&(x))[_F0] & _FSIGN)
#define FHUGE_EXP     (int)(_FMAX * 900L / 1000)
#define FHUGE_RAD     40.7    /* ~ 2^7 / pi */
#define FSAFE_EXP     ((unsigned short)(_FMAX >> 1))

              /* IEEE 754 double properties */
#if _D0 == 0
 #define _F0	0	/* big-endian */
 #define _F1	1

#else /* _D0 == 0 */
 #define _F0	1	/* little-endian */
 #define _F1	0
#endif /* _D0 == 0 */

		/* IEEE 754 long double properties */
#define _LFRAC	((unsigned short)(-1))
#define _LMASK	((unsigned short)0x7fff)
#define _LMAX	((unsigned short)0x7fff)
#define _LSIGN	((unsigned short)0x8000)
#define LSIGN(x)	(((unsigned short *)(char *)&(x))[_L0] & _LSIGN)
#define LHUGE_EXP	(int)(_LMAX * 900L / 1000)
#define LHUGE_RAD	2.73e9	/* ~ 2^33 / pi */
#define LSAFE_EXP	((short)(_LMAX >> 1))


#if _D0 == 0
 #define _L0	0	/* big-endian */
 #define _L1	1
 #define _L2	2
 #define _L3	3
 #define _L4	4
 #define _L5	5	/* 128-bit only */
 #define _L6	6
 #define _L7	7

#elif _DLONG == 0
 #define _L0	3	/* little-endian, 64-bit long doubles */
 #define _L1	2
 #define _L2	1
 #define _L3	0
 #define _L4	xxx	/* should never be used */
 #define _L5	xxx
 #define _L6	xxx
 #define _L7	xxx

#elif _DLONG == 1
 #define _L0	4	/* little-endian, 80-bit long doubles */
 #define _L1	3
 #define _L2	2
 #define _L3	1
 #define _L4	0
 #define _L5	xxx	/* should never be used */
 #define _L6	xxx
 #define _L7	xxx

#else /* _DLONG */
 #define _L0	7	/* little-endian, 128-bit long doubles */
 #define _L1	6
 #define _L2	5
 #define _L3	4
 #define _L4	3
 #define _L5	2
 #define _L6	1
 #define _L7	0
#endif /* _DLONG */

		/* return values for _Stopfx/_Stoflt */
#define FL_ERR	0
#define FL_DEC	1
#define FL_HEX	2
#define FL_INF	3
#define FL_NAN	4
#define FL_NEG	8

/* _C_STD_END */

#endif /* _XMATH */

/*
 * Copyright (c) 1992-2005 by P.J. Plauger.  ALL RIGHTS RESERVED.
 * Consult your license regarding permissions and restrictions.
V4.04:1134 */