/*--------------------------------------------------------------------

 *© Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 *--------------------------------------------------------------------

*/

/*

 * ====================================================

 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

 *

 * Developed at SunPro, a Sun Microsystems, Inc. business.

 * Permission to use, copy, modify, and distribute this

 * software is freely granted, provided that this notice

 * is preserved.

 * ====================================================

 * © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved.

 */

/*

 * from: @(#)fdlibm.h 5.1 93/09/24

 * $FreeBSD: src/lib/msun/src/math.h,v 1.61 2005/04/16 21:12:47 das Exp $

 */

#ifndef _MATH_H_

#define	_MATH_H_

#ifdef __SYMBIAN32__

#ifdef __VC32__

/* warning C4056: overflow in floating-point constant arithmetic 

 * Caused by negative floating point constants, it seems!

 * For example, static double foo = -1.0;

 */

#pragma warning( disable: 4056 )

#endif

#ifdef __ARMCC__

/* Warning:  #222-D: floating-point operation result is out of range

 * The compiler detects constant math that overflows, we want overflow though!

 * Warning:  #39-D: division by zero

*/

#pragma diag_suppress 222

#pragma diag_suppress 39

#pragma diag_suppress 2874

#endif

#endif //__SYMBIAN32__

#ifdef __SYMBIAN32__

#include <_ansi.h>

#endif //__SYMBIAN32__

#include <sys/cdefs.h>

#include <sys/_types.h>

#include <machine/_limits.h>

#ifdef  __SYMBIAN32__

#include <libm_aliases.h>

#endif  //__SYMBIAN32__

#ifdef __SYMBIAN32__

#include "signgam.h"

// IEC 559 math functionality

#define __STDC_IEC_559__		1

#endif //__SYMBIAN32__

/*

 * ANSI/POSIX

 */

#ifndef __SYMBIAN32__

extern const union __infinity_un {

	unsigned char	__uc[8];

	double		__ud;

} __infinity;

extern const union __nan_un {

	unsigned char	__uc[sizeof(float)];

	float		__uf;

} __nan;

#endif //__SYMBIAN32__

#if __GNUC_PREREQ__(3, 3) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800)

#define	__MATH_BUILTIN_CONSTANTS

#endif

#if __GNUC_PREREQ__(3, 0) && !defined(__INTEL_COMPILER)

#define	__MATH_BUILTIN_RELOPS

#endif

#ifdef __SYMBIAN32__

#define	HUGE_VAL	__infinite(1.0)

#else

#ifdef __MATH_BUILTIN_CONSTANTS

#define	HUGE_VAL	__builtin_huge_val()

#else

#define	HUGE_VAL	(__infinity.__ud)

#endif

#endif //__SYMBIAN32__

#if __ISO_C_VISIBLE >= 1999

#define	FP_ILOGB0	(-__INT_MAX)

#define	FP_ILOGBNAN	__INT_MAX

#ifdef __MATH_BUILTIN_CONSTANTS

#define	HUGE_VALF	__builtin_huge_valf()

#define	HUGE_VALL	__builtin_huge_vall()

#define	INFINITY	__builtin_inf()

#define	NAN		__builtin_nan("")

#else

#define	HUGE_VALF	(float)HUGE_VAL

#define	HUGE_VALL	(long double)HUGE_VAL

#define	INFINITY	HUGE_VALF

#ifdef __SYMBIAN32__

#define NAN		nanvalf()

#else

#define	NAN		(__nan.__uf)

#endif //__SYMBIAN32__

#endif /* __MATH_BUILTIN_CONSTANTS */

#define	MATH_ERRNO	1

#define	MATH_ERREXCEPT	2

#define	math_errhandling	MATH_ERREXCEPT

/* XXX We need a <machine/math.h>. */

#if defined(__ia64__) || defined(__sparc64__)

#define	FP_FAST_FMA

#endif

#ifdef __ia64__

#define	FP_FAST_FMAL

#endif

#define	FP_FAST_FMAF

/* Symbolic constants to classify floating point numbers. */

#define	FP_INFINITE	0x01

#define	FP_NAN		0x02

#define	FP_NORMAL	0x04

#define	FP_SUBNORMAL	0x08

#define	FP_ZERO		0x10

#define	fpclassify(x) \

    ((sizeof (x) == sizeof (float)) ? __fpclassifyf(x) \

    : (sizeof (x) == sizeof (double)) ? __fpclassifyd(x) \

    : __fpclassifyl(x))

#define	isfinite(x)					\

    ((sizeof (x) == sizeof (float)) ? __isfinitef(x)	\

    : (sizeof (x) == sizeof (double)) ? __isfinite(x)	\

    : __isfinitel(x))

#define	isinf(x)					\

    ((sizeof (x) == sizeof (float)) ? __isinff(x)	\

    : (sizeof (x) == sizeof (double)) ? __isinf(x)	\

    : __isinfl(x))

#define	isnan(x)					\

    ((sizeof (x) == sizeof (float)) ? __isnanf(x)		\

    : (sizeof (x) == sizeof (double)) ? __isnan(x)	\

    : __isnanl(x))

#define	isnormal(x)					\

    ((sizeof (x) == sizeof (float)) ? __isnormalf(x)	\

    : (sizeof (x) == sizeof (double)) ? __isnormal(x)	\

    : __isnormall(x))

#ifdef __MATH_BUILTIN_RELOPS

#define	isgreater(x, y)		__builtin_isgreater((x), (y))

#define	isgreaterequal(x, y)	__builtin_isgreaterequal((x), (y))

#define	isless(x, y)		__builtin_isless((x), (y))

#define	islessequal(x, y)	__builtin_islessequal((x), (y))

#define	islessgreater(x, y)	__builtin_islessgreater((x), (y))

#define	isunordered(x, y)	__builtin_isunordered((x), (y))

#else

#define	isgreater(x, y)		(!isunordered((x), (y)) && (x) > (y))

#define	isgreaterequal(x, y)	(!isunordered((x), (y)) && (x) >= (y))

#define	isless(x, y)		(!isunordered((x), (y)) && (x) < (y))

#define	islessequal(x, y)	(!isunordered((x), (y)) && (x) <= (y))

#define	islessgreater(x, y)	(!isunordered((x), (y)) && \

					((x) > (y) || (y) > (x)))

#define	isunordered(x, y)	(isnan(x) || isnan(y))

#endif /* __MATH_BUILTIN_RELOPS */

#define	signbit(x)					\

    ((sizeof (x) == sizeof (float)) ? __signbitf(x)	\

    : (sizeof (x) == sizeof (double)) ? __signbit(x)	\

    : __signbitl(x))

typedef	__double_t	double_t;

typedef	__float_t	float_t;

#endif /* __ISO_C_VISIBLE >= 1999 */

/*

 * XOPEN/SVID

 */

#if __BSD_VISIBLE || __XSI_VISIBLE

#define	M_E		2.7182818284590452354	/* e */

#define	M_LOG2E		1.4426950408889634074	/* log 2e */

#define	M_LOG10E	0.43429448190325182765	/* log 10e */

#define	M_LN2		0.69314718055994530942	/* log e2 */

#define	M_LN10		2.30258509299404568402	/* log e10 */

#define	M_PI		3.14159265358979323846	/* pi */

#define	M_PI_2		1.57079632679489661923	/* pi/2 */

#define	M_PI_4		0.78539816339744830962	/* pi/4 */

#define	M_1_PI		0.31830988618379067154	/* 1/pi */

#define	M_2_PI		0.63661977236758134308	/* 2/pi */

#define	M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */

#define	M_SQRT2		1.41421356237309504880	/* sqrt(2) */

#define	M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */

#define	MAXFLOAT	((float)3.40282346638528860e+38)

#ifdef __SYMBIAN32__

#ifndef __WINSCW__

extern int _signgam;

#endif //__WINSCW__

#else

extern int signgam;

#endif //__SYMBIAN32__

#endif /* __BSD_VISIBLE || __XSI_VISIBLE */

#if __BSD_VISIBLE

#if 0

/* Old value from 4.4BSD-Lite math.h; this is probably better. */

#define	HUGE		HUGE_VAL

#else

#define	HUGE		MAXFLOAT

#endif

#endif /* __BSD_VISIBLE */

/*

 * Most of these functions depend on the rounding mode and have the side

 * effect of raising floating-point exceptions, so they are not declared

 * as __pure2.  In C99, FENV_ACCESS affects the purity of these functions.

 */

__BEGIN_DECLS

/*

 * ANSI/POSIX

 */

#ifdef __SYMBIAN32__

IMPORT_C double __infinite(double x);

IMPORT_C float  __infinitef(float x);

IMPORT_C double nanval(void );

IMPORT_C float  nanvalf(void );

#endif //__SYMBIAN32__

IMPORT_C int	__fpclassifyd(double) __pure2;

IMPORT_C int	__fpclassifyf(float) __pure2;

IMPORT_C int	__fpclassifyl(long double) __pure2;

IMPORT_C int	__isfinitef(float) __pure2;

IMPORT_C int	__isfinite(double) __pure2;

IMPORT_C int	__isfinitel(long double) __pure2;

IMPORT_C int	__isinf(double) __pure2;

IMPORT_C int	__isinff(float) __pure2;

IMPORT_C int	__isinfl(long double) __pure2;

#ifdef __SYMBIAN32__

IMPORT_C int	__isnan(double) __pure2;

IMPORT_C int	__isnanf(float) __pure2;

#endif //__SYMBIAN32__

IMPORT_C int	__isnanl(long double) __pure2;

IMPORT_C int	__isnormalf(float) __pure2;

IMPORT_C int	__isnormal(double) __pure2;

IMPORT_C int	__isnormall(long double) __pure2;

IMPORT_C int	__signbit(double) __pure2;

IMPORT_C int	__signbitf(float) __pure2;

IMPORT_C int	__signbitl(long double) __pure2;

IMPORT_C double	acos(double);

IMPORT_C double	asin(double);

IMPORT_C double	atan(double);

IMPORT_C double	atan2(double, double);

IMPORT_C double	cos(double);

IMPORT_C double	sin(double);

IMPORT_C double	tan(double);

IMPORT_C double	cosh(double);

IMPORT_C double	sinh(double);

IMPORT_C double	tanh(double);

IMPORT_C double	exp(double);

IMPORT_C double	frexp(double, int *);	/* fundamentally !__pure2 */

IMPORT_C double	ldexp(double, int);

IMPORT_C double	log(double);

IMPORT_C double	log10(double);

IMPORT_C double	modf(double, double *);	/* fundamentally !__pure2 */

IMPORT_C double	pow(double, double);

IMPORT_C double	sqrt(double);

IMPORT_C double	ceil(double);

IMPORT_C double	fabs(double) __pure2;

IMPORT_C double	floor(double);

IMPORT_C double	fmod(double, double);

/*

 * These functions are not in C90.

 */

#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE

IMPORT_C double	acosh(double);

IMPORT_C double	asinh(double);

IMPORT_C double	atanh(double);

IMPORT_C double	cbrt(double);

IMPORT_C double	erf(double);

IMPORT_C double	erfc(double);

IMPORT_C double	exp2(double);

IMPORT_C double	expm1(double);

IMPORT_C double	fma(double, double, double);

IMPORT_C double	hypot(double, double);

IMPORT_C int	ilogb(double) __pure2;

/*

int	(isinf)(double) __pure2;

int	(isnan)(double) __pure2;

*/

IMPORT_C double	lgamma(double);

IMPORT_C long long llrint(double);

IMPORT_C long long llround(double);

IMPORT_C double	log1p(double);

IMPORT_C double	logb(double);

IMPORT_C long	lrint(double);

IMPORT_C long	lround(double);

IMPORT_C double	nextafter(double, double);

IMPORT_C double	remainder(double, double);

IMPORT_C double	remquo(double, double, int *);

IMPORT_C double	rint(double);

#endif /* __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE */

#if __BSD_VISIBLE || __XSI_VISIBLE

IMPORT_C double	j0(double);

IMPORT_C double	j1(double);

IMPORT_C double	jn(int, double);

IMPORT_C double	scalb(double, double);

IMPORT_C double	y0(double);

IMPORT_C double	y1(double);

IMPORT_C double	yn(int, double);

#if __XSI_VISIBLE <= 500 || __BSD_VISIBLE

IMPORT_C double	gamma(double);

#endif

#endif /* __BSD_VISIBLE || __XSI_VISIBLE */

#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999

IMPORT_C double	copysign(double, double) __pure2;

IMPORT_C double	fdim(double, double);

IMPORT_C double	fmax(double, double) __pure2;

IMPORT_C double	fmin(double, double) __pure2;

IMPORT_C double	nearbyint(double);

IMPORT_C double	round(double);

IMPORT_C double	scalbln(double, long);

IMPORT_C double	scalbn(double, int);

IMPORT_C double	trunc(double);

#endif

/*

 * BSD math library entry points

 */

#if __BSD_VISIBLE

IMPORT_C double	drem(double, double);

IMPORT_C int	finite(double) __pure2;

IMPORT_C int	isnanf(float) __pure2;

/*

 * Reentrant version of gamma & lgamma; passes signgam back by reference

 * as the second argument; user must allocate space for signgam.

 */

IMPORT_C double	lgamma_r(double, int *);

/*

 * IEEE Test Vector

 */

IMPORT_C double	significand(double);

#endif /* __BSD_VISIBLE */

/* float versions of ANSI/POSIX functions */

#if __ISO_C_VISIBLE >= 1999

IMPORT_C float	acosf(float);

IMPORT_C float	acosf(float);

IMPORT_C float	asinf(float);

IMPORT_C float	atanf(float);

IMPORT_C float	atan2f(float, float);

IMPORT_C float	cosf(float);

IMPORT_C float	sinf(float);

IMPORT_C float	tanf(float);

IMPORT_C float	coshf(float);

IMPORT_C float	sinhf(float);

IMPORT_C float	tanhf(float);

IMPORT_C float	exp2f(float);

IMPORT_C float	expf(float);

IMPORT_C float	expm1f(float);

IMPORT_C float	frexpf(float, int *);	/* fundamentally !__pure2 */

IMPORT_C int	ilogbf(float) __pure2;

#ifndef __SYMBIAN32__

float	ldexpf(float, int);

#endif //__SYMBIAN32__

IMPORT_C float	log10f(float);

IMPORT_C float	log1pf(float);

IMPORT_C float	logf(float);

IMPORT_C float	modff(float, float *);	/* fundamentally !__pure2 */

IMPORT_C float	powf(float, float);

IMPORT_C float	sqrtf(float);

IMPORT_C float	ceilf(float);

IMPORT_C float	fabsf(float) __pure2;

IMPORT_C float	floorf(float);

IMPORT_C float	fmodf(float, float);

IMPORT_C float	roundf(float);

IMPORT_C float	erff(float);

IMPORT_C float	erfcf(float);

IMPORT_C float	hypotf(float, float);

IMPORT_C float	lgammaf(float);

IMPORT_C float	acoshf(float);

IMPORT_C float	asinhf(float);

IMPORT_C float	atanhf(float);

IMPORT_C float	cbrtf(float);

IMPORT_C float	logbf(float);

IMPORT_C float	copysignf(float, float) __pure2;

IMPORT_C long long llrintf(float);

IMPORT_C long long llroundf(float);

IMPORT_C long	lrintf(float);

IMPORT_C long	lroundf(float);

IMPORT_C float	nearbyintf(float);

IMPORT_C float	nextafterf(float, float);

IMPORT_C float	remainderf(float, float);

IMPORT_C float	remquof(float, float, int *);

IMPORT_C float	rintf(float);

IMPORT_C float	scalblnf(float, long);

IMPORT_C float	scalbnf(float, int);

IMPORT_C float	truncf(float);

IMPORT_C float	fdimf(float, float);

IMPORT_C float	fmaf(float, float, float);

IMPORT_C float	fmaxf(float, float) __pure2;

IMPORT_C float	fminf(float, float) __pure2;

#endif

/*

 * float versions of BSD math library entry points

 */

#if __BSD_VISIBLE

#ifdef __SYMBIAN_COMPILE_UNUSED__

float	dremf(float, float);

#endif

IMPORT_C int	finitef(float) __pure2;

IMPORT_C float	gammaf(float);

IMPORT_C float	j0f(float);

IMPORT_C float	j1f(float);

IMPORT_C float	jnf(int, float);

IMPORT_C float	scalbf(float, float);

IMPORT_C float	y0f(float);

IMPORT_C float	y1f(float);

IMPORT_C float	ynf(int, float);

/*

 * Float versions of reentrant version of gamma & lgamma; passes

 * signgam back by reference as the second argument; user must

 * allocate space for signgam.

 */

IMPORT_C float	lgammaf_r(float, int *);

/*

 * float version of IEEE Test Vector

 */

IMPORT_C float	significandf(float);

#endif	/* __BSD_VISIBLE */

/*

 * long double versions of ISO/POSIX math functions

 */

#if __ISO_C_VISIBLE >= 1999

#if 0

long double	acoshl(long double);

long double	acosl(long double);

long double	asinhl(long double);

long double	asinl(long double);

long double	atan2l(long double, long double);

long double	atanhl(long double);

long double	atanl(long double);

long double	cbrtl(long double);

#endif

#ifndef __SYMBIAN32__

long double	ceill(long double);

#endif //__SYMBIAN32__

IMPORT_C long double	copysignl(long double, long double) __pure2;

#if 0

long double	coshl(long double);

long double	cosl(long double);

long double	erfcl(long double);

long double	erfl(long double);

long double	exp2l(long double);

long double	expl(long double);

long double	expm1l(long double);

#endif

IMPORT_C long double	fabsl(long double) __pure2;

IMPORT_C long double	fdiml(long double, long double);