epoc32/include/stdapis/math.h
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:33:34 +0100
branchSymbian3
changeset 4 837f303aceeb
parent 2 2fe1408b6811
permissions -rw-r--r--
Current Symbian^3 public API header files (from PDK 3.0.h)
This is the epoc32/include tree with the "platform" subtrees removed, and
all but a selected few mbg and rsg files removed.
     1 
     2 /*
     3  * ====================================================
     4  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
     5  *
     6  * Developed at SunPro, a Sun Microsystems, Inc. business.
     7  * Permission to use, copy, modify, and distribute this
     8  * software is freely granted, provided that this notice
     9  * is preserved.
    10  * ====================================================
    11  *  Portions Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
    12  */
    13 
    14 /*
    15  * from: @(#)fdlibm.h 5.1 93/09/24
    16  * $FreeBSD: src/lib/msun/src/math.h,v 1.61 2005/04/16 21:12:47 das Exp $
    17  */
    18 
    19 #ifndef _MATH_H_
    20 #define	_MATH_H_
    21 
    22 
    23 #ifdef __SYMBIAN32__
    24 #ifdef __VC32__
    25 /* warning C4056: overflow in floating-point constant arithmetic 
    26  * Caused by negative floating point constants, it seems!
    27  * For example, static double foo = -1.0;
    28  */
    29 #pragma warning( disable: 4056 )
    30 #endif
    31 #ifdef __ARMCC__
    32 /* Warning:  #222-D: floating-point operation result is out of range
    33  * The compiler detects constant math that overflows, we want overflow though!
    34  * Warning:  #39-D: division by zero
    35 */
    36 #pragma diag_suppress 222
    37 #pragma diag_suppress 39
    38 #pragma diag_suppress 2874
    39 #endif
    40 #endif //__SYMBIAN32__
    41 
    42 #ifdef __SYMBIAN32__
    43 #include <_ansi.h>
    44 #endif //__SYMBIAN32__
    45 
    46 #include <sys/cdefs.h>
    47 #include <sys/_types.h>
    48 #include <stdapis/machine/_limits.h>
    49 
    50 #ifdef  __SYMBIAN32__
    51 #include <libm_aliases.h>
    52 #endif  //__SYMBIAN32__
    53 #ifdef __SYMBIAN32__
    54 #include "signgam.h"
    55 
    56 // IEC 559 math functionality
    57 #define __STDC_IEC_559__		1
    58 #endif //__SYMBIAN32__
    59 
    60 /*
    61  * ANSI/POSIX
    62  */
    63 #ifndef __SYMBIAN32__
    64 extern const union __infinity_un {
    65 	unsigned char	__uc[8];
    66 	double		__ud;
    67 } __infinity;
    68 
    69 extern const union __nan_un {
    70 	unsigned char	__uc[sizeof(float)];
    71 	float		__uf;
    72 } __nan;
    73 #endif //__SYMBIAN32__
    74 
    75 #if __GNUC_PREREQ__(3, 3) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800)
    76 #define	__MATH_BUILTIN_CONSTANTS
    77 #endif
    78 
    79 #if __GNUC_PREREQ__(3, 0) && !defined(__INTEL_COMPILER)
    80 #define	__MATH_BUILTIN_RELOPS
    81 #endif
    82 
    83 #ifdef __SYMBIAN32__
    84 #define	HUGE_VAL	__infinite(1.0)
    85 #else
    86 #ifdef __MATH_BUILTIN_CONSTANTS
    87 #define	HUGE_VAL	__builtin_huge_val()
    88 #else
    89 #define	HUGE_VAL	(__infinity.__ud)
    90 #endif
    91 #endif //__SYMBIAN32__
    92 
    93 #if __ISO_C_VISIBLE >= 1999
    94 #define	FP_ILOGB0	(-__INT_MAX)
    95 #define	FP_ILOGBNAN	__INT_MAX
    96 
    97 #ifdef __MATH_BUILTIN_CONSTANTS
    98 #define	HUGE_VALF	__builtin_huge_valf()
    99 #define	HUGE_VALL	__builtin_huge_vall()
   100 #define	INFINITY	__builtin_inf()
   101 #define	NAN		__builtin_nan("")
   102 #else
   103 #define	HUGE_VALF	(float)HUGE_VAL
   104 #define	HUGE_VALL	(long double)HUGE_VAL
   105 #define	INFINITY	HUGE_VALF
   106 #ifdef __SYMBIAN32__
   107 #define NAN		nanvalf()
   108 #else
   109 #define	NAN		(__nan.__uf)
   110 #endif //__SYMBIAN32__
   111 #endif /* __MATH_BUILTIN_CONSTANTS */
   112 
   113 #define	MATH_ERRNO	1
   114 #define	MATH_ERREXCEPT	2
   115 #define	math_errhandling	MATH_ERREXCEPT
   116 
   117 /* XXX We need a <machine/math.h>. */
   118 #if defined(__ia64__) || defined(__sparc64__)
   119 #define	FP_FAST_FMA
   120 #endif
   121 #ifdef __ia64__
   122 #define	FP_FAST_FMAL
   123 #endif
   124 #define	FP_FAST_FMAF
   125 
   126 /* Symbolic constants to classify floating point numbers. */
   127 #define	FP_INFINITE	0x01
   128 #define	FP_NAN		0x02
   129 #define	FP_NORMAL	0x04
   130 #define	FP_SUBNORMAL	0x08
   131 #define	FP_ZERO		0x10
   132 
   133 #define	fpclassify(x) \
   134     ((sizeof (x) == sizeof (float)) ? __fpclassifyf(x) \
   135     : (sizeof (x) == sizeof (double)) ? __fpclassifyd(x) \
   136     : __fpclassifyl(x))
   137 
   138 #define	isfinite(x)					\
   139     ((sizeof (x) == sizeof (float)) ? __isfinitef(x)	\
   140     : (sizeof (x) == sizeof (double)) ? __isfinite(x)	\
   141     : __isfinitel(x))
   142 #define	isinf(x)					\
   143     ((sizeof (x) == sizeof (float)) ? __isinff(x)	\
   144     : (sizeof (x) == sizeof (double)) ? __isinf(x)	\
   145     : __isinfl(x))
   146 #define	isnan(x)					\
   147     ((sizeof (x) == sizeof (float)) ? __isnanf(x)		\
   148     : (sizeof (x) == sizeof (double)) ? __isnan(x)	\
   149     : __isnanl(x))
   150 #define	isnormal(x)					\
   151     ((sizeof (x) == sizeof (float)) ? __isnormalf(x)	\
   152     : (sizeof (x) == sizeof (double)) ? __isnormal(x)	\
   153     : __isnormall(x))
   154 
   155 
   156 #ifdef __MATH_BUILTIN_RELOPS
   157 #define	isgreater(x, y)		__builtin_isgreater((x), (y))
   158 #define	isgreaterequal(x, y)	__builtin_isgreaterequal((x), (y))
   159 #define	isless(x, y)		__builtin_isless((x), (y))
   160 #define	islessequal(x, y)	__builtin_islessequal((x), (y))
   161 #define	islessgreater(x, y)	__builtin_islessgreater((x), (y))
   162 #define	isunordered(x, y)	__builtin_isunordered((x), (y))
   163 #else
   164 #define	isgreater(x, y)		(!isunordered((x), (y)) && (x) > (y))
   165 #define	isgreaterequal(x, y)	(!isunordered((x), (y)) && (x) >= (y))
   166 #define	isless(x, y)		(!isunordered((x), (y)) && (x) < (y))
   167 #define	islessequal(x, y)	(!isunordered((x), (y)) && (x) <= (y))
   168 #define	islessgreater(x, y)	(!isunordered((x), (y)) && \
   169 					((x) > (y) || (y) > (x)))
   170 #define	isunordered(x, y)	(isnan(x) || isnan(y))
   171 #endif /* __MATH_BUILTIN_RELOPS */
   172 
   173 #define	signbit(x)					\
   174     ((sizeof (x) == sizeof (float)) ? __signbitf(x)	\
   175     : (sizeof (x) == sizeof (double)) ? __signbit(x)	\
   176     : __signbitl(x))
   177 
   178 typedef	__double_t	double_t;
   179 typedef	__float_t	float_t;
   180 #endif /* __ISO_C_VISIBLE >= 1999 */
   181 
   182 /*
   183  * XOPEN/SVID
   184  */
   185 #if __BSD_VISIBLE || __XSI_VISIBLE
   186 #define	M_E		2.7182818284590452354	/* e */
   187 #define	M_LOG2E		1.4426950408889634074	/* log 2e */
   188 #define	M_LOG10E	0.43429448190325182765	/* log 10e */
   189 #define	M_LN2		0.69314718055994530942	/* log e2 */
   190 #define	M_LN10		2.30258509299404568402	/* log e10 */
   191 #define	M_PI		3.14159265358979323846	/* pi */
   192 #define	M_PI_2		1.57079632679489661923	/* pi/2 */
   193 #define	M_PI_4		0.78539816339744830962	/* pi/4 */
   194 #define	M_1_PI		0.31830988618379067154	/* 1/pi */
   195 #define	M_2_PI		0.63661977236758134308	/* 2/pi */
   196 #define	M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */
   197 #define	M_SQRT2		1.41421356237309504880	/* sqrt(2) */
   198 #define	M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */
   199 
   200 #define	MAXFLOAT	((float)3.40282346638528860e+38)
   201 #ifdef __SYMBIAN32__
   202 #ifndef __WINSCW__
   203 extern int _signgam;
   204 #endif //__WINSCW__
   205 #else
   206 extern int signgam;
   207 #endif //__SYMBIAN32__
   208 #endif /* __BSD_VISIBLE || __XSI_VISIBLE */
   209 
   210 #if __BSD_VISIBLE
   211 #if 0
   212 /* Old value from 4.4BSD-Lite math.h; this is probably better. */
   213 #define	HUGE		HUGE_VAL
   214 #else
   215 #define	HUGE		MAXFLOAT
   216 #endif
   217 #endif /* __BSD_VISIBLE */
   218 
   219 /*
   220  * Most of these functions depend on the rounding mode and have the side
   221  * effect of raising floating-point exceptions, so they are not declared
   222  * as __pure2.  In C99, FENV_ACCESS affects the purity of these functions.
   223  */
   224 __BEGIN_DECLS
   225 /*
   226  * ANSI/POSIX
   227  */
   228 #ifdef __SYMBIAN32__
   229 IMPORT_C double __infinite(double x);
   230 IMPORT_C float  __infinitef(float x);
   231 
   232 IMPORT_C double nanval(void );
   233 IMPORT_C float  nanvalf(void );
   234 #endif //__SYMBIAN32__
   235 
   236 
   237 IMPORT_C int	__fpclassifyd(double) __pure2;
   238 IMPORT_C int	__fpclassifyf(float) __pure2;
   239 IMPORT_C int	__fpclassifyl(long double) __pure2;
   240 IMPORT_C int	__isfinitef(float) __pure2;
   241 IMPORT_C int	__isfinite(double) __pure2;
   242 IMPORT_C int	__isfinitel(long double) __pure2;
   243 IMPORT_C int	__isinf(double) __pure2;
   244 IMPORT_C int	__isinff(float) __pure2;
   245 IMPORT_C int	__isinfl(long double) __pure2;
   246 #ifdef __SYMBIAN32__
   247 IMPORT_C int	__isnan(double) __pure2;
   248 IMPORT_C int	__isnanf(float) __pure2;
   249 #endif //__SYMBIAN32__
   250 IMPORT_C int	__isnanl(long double) __pure2;
   251 IMPORT_C int	__isnormalf(float) __pure2;
   252 IMPORT_C int	__isnormal(double) __pure2;
   253 IMPORT_C int	__isnormall(long double) __pure2;
   254 IMPORT_C int	__signbit(double) __pure2;
   255 IMPORT_C int	__signbitf(float) __pure2;
   256 IMPORT_C int	__signbitl(long double) __pure2;
   257 
   258 IMPORT_C double	acos(double);
   259 IMPORT_C double	asin(double);
   260 IMPORT_C double	atan(double);
   261 IMPORT_C double	atan2(double, double);
   262 IMPORT_C double	cos(double);
   263 IMPORT_C double	sin(double);
   264 IMPORT_C double	tan(double);
   265 
   266 IMPORT_C double	cosh(double);
   267 IMPORT_C double	sinh(double);
   268 IMPORT_C double	tanh(double);
   269 
   270 IMPORT_C double	exp(double);
   271 IMPORT_C double	frexp(double, int *);	/* fundamentally !__pure2 */
   272 IMPORT_C double	ldexp(double, int);
   273 IMPORT_C double	log(double);
   274 IMPORT_C double	log10(double);
   275 IMPORT_C double	modf(double, double *);	/* fundamentally !__pure2 */
   276 
   277 IMPORT_C double	pow(double, double);
   278 IMPORT_C double	sqrt(double);
   279 
   280 IMPORT_C double	ceil(double);
   281 IMPORT_C double	fabs(double) __pure2;
   282 IMPORT_C double	floor(double);
   283 IMPORT_C double	fmod(double, double);
   284 
   285 /*
   286  * These functions are not in C90.
   287  */
   288 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE
   289 IMPORT_C double	acosh(double);
   290 IMPORT_C double	asinh(double);
   291 IMPORT_C double	atanh(double);
   292 IMPORT_C double	cbrt(double);
   293 IMPORT_C double	erf(double);
   294 IMPORT_C double	erfc(double);
   295 IMPORT_C double	exp2(double);
   296 IMPORT_C double	expm1(double);
   297 IMPORT_C double	fma(double, double, double);
   298 IMPORT_C double	hypot(double, double);
   299 
   300 
   301 IMPORT_C int	ilogb(double) __pure2;
   302 /*
   303 int	(isinf)(double) __pure2;
   304 int	(isnan)(double) __pure2;
   305 */
   306 IMPORT_C double	lgamma(double);
   307 IMPORT_C long long llrint(double);
   308 IMPORT_C long long llround(double);
   309 IMPORT_C double	log1p(double);
   310 IMPORT_C double	logb(double);
   311 IMPORT_C long	lrint(double);
   312 IMPORT_C long	lround(double);
   313 IMPORT_C double	nextafter(double, double);
   314 IMPORT_C double	remainder(double, double);
   315 IMPORT_C double	remquo(double, double, int *);
   316 IMPORT_C double	rint(double);
   317 #endif /* __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE */
   318 
   319 #if __BSD_VISIBLE || __XSI_VISIBLE
   320 IMPORT_C double	j0(double);
   321 IMPORT_C double	j1(double);
   322 IMPORT_C double	jn(int, double);
   323 IMPORT_C double	scalb(double, double);
   324 IMPORT_C double	y0(double);
   325 IMPORT_C double	y1(double);
   326 IMPORT_C double	yn(int, double);
   327 
   328 #if __XSI_VISIBLE <= 500 || __BSD_VISIBLE
   329 IMPORT_C double	gamma(double);
   330 #endif
   331 #endif /* __BSD_VISIBLE || __XSI_VISIBLE */
   332 
   333 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999
   334 IMPORT_C double	copysign(double, double) __pure2;
   335 IMPORT_C double	fdim(double, double);
   336 IMPORT_C double	fmax(double, double) __pure2;
   337 IMPORT_C double	fmin(double, double) __pure2;
   338 IMPORT_C double	nearbyint(double);
   339 IMPORT_C double	round(double);
   340 IMPORT_C double	scalbln(double, long);
   341 IMPORT_C double	scalbn(double, int);
   342 IMPORT_C double	trunc(double);
   343 #endif
   344 
   345 /*
   346  * BSD math library entry points
   347  */
   348 #if __BSD_VISIBLE
   349 IMPORT_C double	drem(double, double);
   350 IMPORT_C int	finite(double) __pure2;
   351 IMPORT_C int	isnanf(float) __pure2;
   352 
   353 /*
   354  * Reentrant version of gamma & lgamma; passes signgam back by reference
   355  * as the second argument; user must allocate space for signgam.
   356  */
   357 IMPORT_C double	lgamma_r(double, int *);
   358 
   359 /*
   360  * IEEE Test Vector
   361  */
   362 IMPORT_C double	significand(double);
   363 #endif /* __BSD_VISIBLE */
   364 
   365 /* float versions of ANSI/POSIX functions */
   366 #if __ISO_C_VISIBLE >= 1999
   367 IMPORT_C float	acosf(float);
   368 
   369 IMPORT_C float	acosf(float);
   370 IMPORT_C float	asinf(float);
   371 IMPORT_C float	atanf(float);
   372 IMPORT_C float	atan2f(float, float);
   373 IMPORT_C float	cosf(float);
   374 IMPORT_C float	sinf(float);
   375 IMPORT_C float	tanf(float);
   376 
   377 IMPORT_C float	coshf(float);
   378 IMPORT_C float	sinhf(float);
   379 IMPORT_C float	tanhf(float);
   380 IMPORT_C float	exp2f(float);
   381 IMPORT_C float	expf(float);
   382 IMPORT_C float	expm1f(float);
   383 IMPORT_C float	frexpf(float, int *);	/* fundamentally !__pure2 */
   384 IMPORT_C int	ilogbf(float) __pure2;
   385 #ifndef __SYMBIAN32__
   386 float	ldexpf(float, int);
   387 #endif //__SYMBIAN32__
   388 IMPORT_C float	log10f(float);
   389 IMPORT_C float	log1pf(float);
   390 IMPORT_C float	logf(float);
   391 IMPORT_C float	modff(float, float *);	/* fundamentally !__pure2 */
   392 
   393 IMPORT_C float	powf(float, float);
   394 IMPORT_C float	sqrtf(float);
   395 
   396 IMPORT_C float	ceilf(float);
   397 IMPORT_C float	fabsf(float) __pure2;
   398 IMPORT_C float	floorf(float);
   399 IMPORT_C float	fmodf(float, float);
   400 IMPORT_C float	roundf(float);
   401 
   402 IMPORT_C float	erff(float);
   403 IMPORT_C float	erfcf(float);
   404 IMPORT_C float	hypotf(float, float);
   405 IMPORT_C float	lgammaf(float);
   406 
   407 IMPORT_C float	acoshf(float);
   408 IMPORT_C float	asinhf(float);
   409 IMPORT_C float	atanhf(float);
   410 IMPORT_C float	cbrtf(float);
   411 IMPORT_C float	logbf(float);
   412 IMPORT_C float	copysignf(float, float) __pure2;
   413 IMPORT_C long long llrintf(float);
   414 IMPORT_C long long llroundf(float);
   415 IMPORT_C long	lrintf(float);
   416 IMPORT_C long	lroundf(float);
   417 IMPORT_C float	nearbyintf(float);
   418 IMPORT_C float	nextafterf(float, float);
   419 IMPORT_C float	remainderf(float, float);
   420 IMPORT_C float	remquof(float, float, int *);
   421 IMPORT_C float	rintf(float);
   422 IMPORT_C float	scalblnf(float, long);
   423 IMPORT_C float	scalbnf(float, int);
   424 IMPORT_C float	truncf(float);
   425 
   426 IMPORT_C float	fdimf(float, float);
   427 IMPORT_C float	fmaf(float, float, float);
   428 IMPORT_C float	fmaxf(float, float) __pure2;
   429 IMPORT_C float	fminf(float, float) __pure2;
   430 #endif
   431 
   432 /*
   433  * float versions of BSD math library entry points
   434  */
   435 #if __BSD_VISIBLE
   436 
   437 #ifdef __SYMBIAN_COMPILE_UNUSED__
   438 float	dremf(float, float);
   439 #endif
   440 
   441 IMPORT_C int	finitef(float) __pure2;
   442 IMPORT_C float	gammaf(float);
   443 IMPORT_C float	j0f(float);
   444 IMPORT_C float	j1f(float);
   445 IMPORT_C float	jnf(int, float);
   446 IMPORT_C float	scalbf(float, float);
   447 IMPORT_C float	y0f(float);
   448 IMPORT_C float	y1f(float);
   449 IMPORT_C float	ynf(int, float);
   450 
   451 /*
   452  * Float versions of reentrant version of gamma & lgamma; passes
   453  * signgam back by reference as the second argument; user must
   454  * allocate space for signgam.
   455  */
   456 IMPORT_C float	lgammaf_r(float, int *);
   457 
   458 /*
   459  * float version of IEEE Test Vector
   460  */
   461 IMPORT_C float	significandf(float);
   462 #endif	/* __BSD_VISIBLE */
   463 
   464 /*
   465  * long double versions of ISO/POSIX math functions
   466  */
   467 #if __ISO_C_VISIBLE >= 1999
   468 #if 0
   469 long double	acoshl(long double);
   470 long double	acosl(long double);
   471 long double	asinhl(long double);
   472 long double	asinl(long double);
   473 long double	atan2l(long double, long double);
   474 long double	atanhl(long double);
   475 long double	atanl(long double);
   476 long double	cbrtl(long double);
   477 #endif
   478 #ifndef __SYMBIAN32__
   479 long double	ceill(long double);
   480 #endif //__SYMBIAN32__
   481 IMPORT_C long double	copysignl(long double, long double) __pure2;
   482 #if 0
   483 long double	coshl(long double);
   484 long double	cosl(long double);
   485 long double	erfcl(long double);
   486 long double	erfl(long double);
   487 long double	exp2l(long double);
   488 long double	expl(long double);
   489 long double	expm1l(long double);
   490 #endif
   491 IMPORT_C long double	fabsl(long double) __pure2;
   492 IMPORT_C long double	fdiml(long double, long double);
   493 #ifndef __SYMBIAN32__
   494 long double	floorl(long double);
   495 long double	fmal(long double, long double, long double);
   496 #endif //__SYMBIAN32__
   497 IMPORT_C long double	fmaxl(long double, long double) __pure2;
   498 #ifndef __SYMBIAN32__
   499 long double	fminl(long double, long double) __pure2;
   500 #endif //__SYMBIAN32__
   501 #if 0
   502 long double	fmodl(long double, long double);
   503 #endif
   504 #ifndef __SYMBIAN32__
   505 long double	frexpl(long double value, int *); /* fundamentally !__pure2 */
   506 #endif //__SYMBIAN32__
   507 #if 0
   508 long double	hypotl(long double, long double);
   509 #endif
   510 IMPORT_C int		ilogbl(long double) __pure2;
   511 #ifndef __SYMBIAN32__
   512 long double	ldexpl(long double, int);
   513 #endif //__SYMBIAN32__
   514 #if 0
   515 long double	lgammal(long double);
   516 long long	llrintl(long double);
   517 #endif
   518 #ifndef __SYMBIAN32__
   519 long long	llroundl(long double);
   520 #endif //__SYMBIAN32__
   521 #if 0
   522 long double	log10l(long double);
   523 long double	log1pl(long double);
   524 long double	log2l(long double);
   525 long double	logbl(long double);
   526 long double	logl(long double);
   527 long		lrintl(long double);
   528 #endif
   529 #ifndef __SYMBIAN32__
   530 long		lroundl(long double);
   531 #endif //__SYMBIAN32__
   532 #if 0
   533 long double	modfl(long double, long double *); /* fundamentally !__pure2 */
   534 long double	nanl(const char *) __pure2;
   535 long double	nearbyintl(long double);
   536 #endif
   537 #ifndef __SYMBIAN32__
   538 long double	nextafterl(long double, long double);
   539 double		nexttoward(double, long double);
   540 #endif //__SYMBIAN32__
   541 IMPORT_C float		nexttowardf(float, long double);
   542 #ifndef __SYMBIAN32__
   543 long double	nexttowardl(long double, long double);
   544 #endif //__SYMBIAN32__
   545 #if 0
   546 long double	powl(long double, long double);
   547 long double	remainderl(long double, long double);
   548 long double	remquol(long double, long double, int *);
   549 long double	rintl(long double);
   550 #endif
   551 #ifndef __SYMBIAN32__
   552 long double	roundl(long double);
   553 #endif //__SYMBIAN32__
   554 IMPORT_C long double	scalblnl(long double, long);
   555 #ifndef __SYMBIAN32__
   556 long double	scalbnl(long double, int);
   557 #endif //__SYMBIAN32__
   558 #if 0
   559 long double	sinhl(long double);
   560 long double	sinl(long double);
   561 long double	sqrtl(long double);
   562 long double	tanhl(long double);
   563 long double	tanl(long double);
   564 #endif
   565 IMPORT_C long double	truncl(long double);
   566 
   567 #endif /* __ISO_C_VISIBLE >= 1999 */
   568 __END_DECLS
   569 
   570 #endif /* !_MATH_H_ */