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/* Prototype declarations for math functions; helper file for <math.h>.

   Copyright (C) 1996-2002, 2003, 2006 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

/* NOTE: Because of the special way this file is used by <math.h>, this

   file must NOT be protected from multiple inclusion as header files

   usually are.

   This file provides prototype declarations for the math functions.

   Most functions are declared using the macro:

   __MATHCALL (NAME,[_r], (ARGS...));

   This means there is a function `NAME' returning `double' and a function

   `NAMEf' returning `float'.  Each place `_Mdouble_' appears in the

   prototype, that is actually `double' in the prototype for `NAME' and

   `float' in the prototype for `NAMEf'.  Reentrant variant functions are

   called `NAME_r' and `NAMEf_r'.

   Functions returning other types like `int' are declared using the macro:

   __MATHDECL (TYPE, NAME,[_r], (ARGS...));

   This is just like __MATHCALL but for a function returning `TYPE'

   instead of `_Mdouble_'.  In all of these cases, there is still

   both a `NAME' and a `NAMEf' that takes `float' arguments.

   Note that there must be no whitespace before the argument passed for

   NAME, to make token pasting work with -traditional.  */

#ifndef _MATH_H

# error "Never include <bits/mathcalls.h> directly; include <math.h> instead."

#endif

/* Trigonometric functions.  */

_Mdouble_BEGIN_NAMESPACE

/* Arc cosine of X.  */

__MATHCALL (acos,, (_Mdouble_ __x));

/* Arc sine of X.  */

__MATHCALL (asin,, (_Mdouble_ __x));

/* Arc tangent of X.  */

__MATHCALL (atan,, (_Mdouble_ __x));

/* Arc tangent of Y/X.  */

__MATHCALL (atan2,, (_Mdouble_ __y, _Mdouble_ __x));

/* Cosine of X.  */

__MATHCALL (cos,, (_Mdouble_ __x));

/* Sine of X.  */

__MATHCALL (sin,, (_Mdouble_ __x));

/* Tangent of X.  */

__MATHCALL (tan,, (_Mdouble_ __x));

/* Hyperbolic functions.  */

/* Hyperbolic cosine of X.  */

__MATHCALL (cosh,, (_Mdouble_ __x));

/* Hyperbolic sine of X.  */

__MATHCALL (sinh,, (_Mdouble_ __x));

/* Hyperbolic tangent of X.  */

__MATHCALL (tanh,, (_Mdouble_ __x));

_Mdouble_END_NAMESPACE

#if 0 /*def __USE_GNU*/

/* Cosine and sine of X.  */

__MATHDECL (void,sincos,,

            (_Mdouble_ __x, _Mdouble_ *__sinx, _Mdouble_ *__cosx));

#endif

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Hyperbolic arc cosine of X.  */

__MATHCALL (acosh,, (_Mdouble_ __x));

/* Hyperbolic arc sine of X.  */

__MATHCALL (asinh,, (_Mdouble_ __x));

/* Hyperbolic arc tangent of X.  */

__MATHCALL (atanh,, (_Mdouble_ __x));

__END_NAMESPACE_C99

#endif

/* Exponential and logarithmic functions.  */

_Mdouble_BEGIN_NAMESPACE

/* Exponential function of X.  */

__MATHCALL (exp,, (_Mdouble_ __x));

/* Break VALUE into a normalized fraction and an integral power of 2.  */

__MATHCALL (frexp,, (_Mdouble_ __x, int *__exponent));

/* X times (two to the EXP power).  */

__MATHCALL (ldexp,, (_Mdouble_ __x, int __exponent));

/* Natural logarithm of X.  */

__MATHCALL (log,, (_Mdouble_ __x));

/* Base-ten logarithm of X.  */

__MATHCALL (log10,, (_Mdouble_ __x));

/* Break VALUE into integral and fractional parts.  */

__MATHCALL (modf,, (_Mdouble_ __x, _Mdouble_ *__iptr));

_Mdouble_END_NAMESPACE

#if 0 /*def __USE_GNU*/

/* A function missing in all standards: compute exponent to base ten.  */

__MATHCALL (exp10,, (_Mdouble_ __x));

/* Another name occasionally used.  */

__MATHCALL (pow10,, (_Mdouble_ __x));

#endif

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Return exp(X) - 1.  */

__MATHCALL (expm1,, (_Mdouble_ __x));

/* Return log(1 + X).  */

__MATHCALL (log1p,, (_Mdouble_ __x));

/* Return the base 2 signed integral exponent of X.  */

__MATHCALL (logb,, (_Mdouble_ __x));

__END_NAMESPACE_C99

#endif

#ifdef __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Compute base-2 exponential of X.  */

__MATHCALL (exp2,, (_Mdouble_ __x));

/* Compute base-2 logarithm of X.  */

__MATHCALL (log2,, (_Mdouble_ __x));

__END_NAMESPACE_C99

#endif

/* Power functions.  */

_Mdouble_BEGIN_NAMESPACE

/* Return X to the Y power.  */

__MATHCALL (pow,, (_Mdouble_ __x, _Mdouble_ __y));

/* Return the square root of X.  */

__MATHCALL (sqrt,, (_Mdouble_ __x));

_Mdouble_END_NAMESPACE

#if defined __USE_MISC || defined __USE_XOPEN || defined __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Return `sqrt(X*X + Y*Y)'.  */

__MATHCALL (hypot,, (_Mdouble_ __x, _Mdouble_ __y));

__END_NAMESPACE_C99

#endif

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Return the cube root of X.  */

__MATHCALL (cbrt,, (_Mdouble_ __x));

__END_NAMESPACE_C99

#endif

/* Nearest integer, absolute value, and remainder functions.  */

_Mdouble_BEGIN_NAMESPACE

/* Smallest integral value not less than X.  */

__MATHCALLX (ceil,, (_Mdouble_ __x), (__const__));

/* Absolute value of X.  */

__MATHCALLX (fabs,, (_Mdouble_ __x), (__const__));

/* Largest integer not greater than X.  */

__MATHCALLX (floor,, (_Mdouble_ __x), (__const__));

/* Floating-point modulo remainder of X/Y.  */

__MATHCALL (fmod,, (_Mdouble_ __x, _Mdouble_ __y));

/* Return 0 if VALUE is finite or NaN, +1 if it

   is +Infinity, -1 if it is -Infinity.  */

__MATHDECL_1 (int,__isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));

/* Return nonzero if VALUE is finite and not NaN.  */

__MATHDECL_1 (int,__finite,, (_Mdouble_ __value)) __attribute__ ((__const__));

_Mdouble_END_NAMESPACE

#ifdef __USE_MISC

/* Return 0 if VALUE is finite or NaN, +1 if it

   is +Infinity, -1 if it is -Infinity.  */

__MATHDECL_1 (int,isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));

/* Return nonzero if VALUE is finite and not NaN.  */

__MATHDECL_1 (int,finite,, (_Mdouble_ __value)) __attribute__ ((__const__));

/* Return the remainder of X/Y.  */

__MATHCALL (drem,, (_Mdouble_ __x, _Mdouble_ __y));

/* Return the fractional part of X after dividing out `ilogb (X)'.  */

__MATHCALL (significand,, (_Mdouble_ __x));

#endif /* Use misc.  */

#if defined __USE_MISC || defined __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Return X with its signed changed to Y's.  */

__MATHCALLX (copysign,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));

__END_NAMESPACE_C99

#endif

#ifdef __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Return representation of NaN for double type.  */

__MATHCALLX (nan,, (__const char *__tagb), (__const__));

__END_NAMESPACE_C99

#endif

/* Return nonzero if VALUE is not a number.  */

__MATHDECL_1 (int,__isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));

#if defined __USE_MISC || defined __USE_XOPEN

/* Return nonzero if VALUE is not a number.  */

__MATHDECL_1 (int,isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));

/* Bessel functions.  */

__MATHCALL (j0,, (_Mdouble_));

__MATHCALL (j1,, (_Mdouble_));

__MATHCALL (jn,, (int, _Mdouble_));

__MATHCALL (y0,, (_Mdouble_));

__MATHCALL (y1,, (_Mdouble_));

__MATHCALL (yn,, (int, _Mdouble_));

#endif

#if defined __USE_MISC || defined __USE_XOPEN || defined __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Error and gamma functions.  */

__MATHCALL (erf,, (_Mdouble_));

__MATHCALL (erfc,, (_Mdouble_));

__MATHCALL (lgamma,, (_Mdouble_));

__END_NAMESPACE_C99

#endif

#ifdef __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* True gamma function.  */

__MATHCALL (tgamma,, (_Mdouble_));

__END_NAMESPACE_C99

#endif

#if defined __USE_MISC || defined __USE_XOPEN

/* Obsolete alias for `lgamma'.  */

__MATHCALL (gamma,, (_Mdouble_));

#endif

#ifdef __USE_MISC

/* Reentrant version of lgamma.  This function uses the global variable

   `signgam'.  The reentrant version instead takes a pointer and stores

   the value through it.  */

__MATHCALL (lgamma,_r, (_Mdouble_, int *__signgamp));

#endif

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Return the integer nearest X in the direction of the

   prevailing rounding mode.  */

__MATHCALL (rint,, (_Mdouble_ __x));

/* Return X + epsilon if X < Y, X - epsilon if X > Y.  */

__MATHCALLX (nextafter,, (_Mdouble_ __x, _Mdouble_ __y), (__const__));

# if defined __USE_ISOC99 && !defined __LDBL_COMPAT

__MATHCALLX (nexttoward,, (_Mdouble_ __x, long double __y), (__const__));

# endif

/* Return the remainder of integer divison X / Y with infinite precision.  */

__MATHCALL (remainder,, (_Mdouble_ __x, _Mdouble_ __y));

# if defined __USE_MISC || defined __USE_ISOC99

/* Return X times (2 to the Nth power).  */

__MATHCALL (scalbn,, (_Mdouble_ __x, int __n));

# endif

/* Return the binary exponent of X, which must be nonzero.  */

__MATHDECL (int,ilogb,, (_Mdouble_ __x));

#endif

#ifdef __USE_ISOC99

/* Return X times (2 to the Nth power).  */

__MATHCALL (scalbln,, (_Mdouble_ __x, long int __n));

/* Round X to integral value in floating-point format using current

   rounding direction, but do not raise inexact exception.  */

__MATHCALL (nearbyint,, (_Mdouble_ __x));

/* Round X to nearest integral value, rounding halfway cases away from

   zero.  */

__MATHCALLX (round,, (_Mdouble_ __x), (__const__));

/* Round X to the integral value in floating-point format nearest but

   not larger in magnitude.  */

__MATHCALLX (trunc,, (_Mdouble_ __x), (__const__));

/* Compute remainder of X and Y and put in *QUO a value with sign of x/y

   and magnitude congruent `mod 2^n' to the magnitude of the integral

   quotient x/y, with n >= 3.  */

__MATHCALL (remquo,, (_Mdouble_ __x, _Mdouble_ __y, int *__quo));

/* Conversion functions.  */

/* Round X to nearest integral value according to current rounding

   direction.  */

__MATHDECL (long int,lrint,, (_Mdouble_ __x));

__MATHDECL (long long int,llrint,, (_Mdouble_ __x));

/* Round X to nearest integral value, rounding halfway cases away from

   zero.  */

__MATHDECL (long int,lround,, (_Mdouble_ __x));

__MATHDECL (long long int,llround,, (_Mdouble_ __x));

/* Return positive difference between X and Y.  */

__MATHCALL (fdim,, (_Mdouble_ __x, _Mdouble_ __y));

/* Return maximum numeric value from X and Y.  */

__MATHCALL (fmax,, (_Mdouble_ __x, _Mdouble_ __y));

/* Return minimum numeric value from X and Y.  */

__MATHCALL (fmin,, (_Mdouble_ __x, _Mdouble_ __y));

/* Classify given number.  */

__MATHDECL_1 (int, __fpclassify,, (_Mdouble_ __value))

     __attribute__ ((__const__));

/* Test for negative number.  */

__MATHDECL_1 (int, __signbit,, (_Mdouble_ __value))

     __attribute__ ((__const__));

/* Multiply-add function computed as a ternary operation.  */

__MATHCALL (fma,, (_Mdouble_ __x, _Mdouble_ __y, _Mdouble_ __z));

#endif /* Use ISO C99.  */

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99

__END_NAMESPACE_C99

#endif

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED

/* Return X times (2 to the Nth power).  */

__MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n));

#endif