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/* Prototype declarations for complex math functions;

   helper file for <complex.h>.

   Copyright (C) 1997, 1998, 2001 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 <complex.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, (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, (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.  */

#ifndef _COMPLEX_H

#error "Never use <bits/cmathcalls.h> directly; include <complex.h> instead."

#endif

#define _Mdouble_complex_ _Mdouble_ _Complex

/* Trigonometric functions.  */

/* Arc cosine of Z.  */

__MATHCALL (cacos, (_Mdouble_complex_ __z));

/* Arc sine of Z.  */

__MATHCALL (casin, (_Mdouble_complex_ __z));

/* Arc tangent of Z.  */

__MATHCALL (catan, (_Mdouble_complex_ __z));

/* Cosine of Z.  */

__MATHCALL (ccos, (_Mdouble_complex_ __z));

/* Sine of Z.  */

__MATHCALL (csin, (_Mdouble_complex_ __z));

/* Tangent of Z.  */

__MATHCALL (ctan, (_Mdouble_complex_ __z));

/* Hyperbolic functions.  */

/* Hyperbolic arc cosine of Z.  */

__MATHCALL (cacosh, (_Mdouble_complex_ __z));

/* Hyperbolic arc sine of Z.  */

__MATHCALL (casinh, (_Mdouble_complex_ __z));

/* Hyperbolic arc tangent of Z.  */

__MATHCALL (catanh, (_Mdouble_complex_ __z));

/* Hyperbolic cosine of Z.  */

__MATHCALL (ccosh, (_Mdouble_complex_ __z));

/* Hyperbolic sine of Z.  */

__MATHCALL (csinh, (_Mdouble_complex_ __z));

/* Hyperbolic tangent of Z.  */

__MATHCALL (ctanh, (_Mdouble_complex_ __z));

/* Exponential and logarithmic functions.  */

/* Exponential function of Z.  */

__MATHCALL (cexp, (_Mdouble_complex_ __z));

/* Natural logarithm of Z.  */

__MATHCALL (clog, (_Mdouble_complex_ __z));

#ifdef __USE_GNU

/* The base 10 logarithm is not defined by the standard but to implement

   the standard C++ library it is handy.  */

__MATHCALL (clog10, (_Mdouble_complex_ __z));

#endif

/* Power functions.  */

/* Return X to the Y power.  */

__MATHCALL (cpow, (_Mdouble_complex_ __x, _Mdouble_complex_ __y));

/* Return the square root of Z.  */

__MATHCALL (csqrt, (_Mdouble_complex_ __z));

/* Absolute value, conjugates, and projection.  */

/* Absolute value of Z.  */

__MATHDECL (_Mdouble_,cabs, (_Mdouble_complex_ __z));

/* Argument value of Z.  */

__MATHDECL (_Mdouble_,carg, (_Mdouble_complex_ __z));

/* Complex conjugate of Z.  */

__MATHCALL (conj, (_Mdouble_complex_ __z));

/* Projection of Z onto the Riemann sphere.  */

__MATHCALL (cproj, (_Mdouble_complex_ __z));

/* Decomposing complex values.  */

/* Imaginary part of Z.  */

__MATHDECL (_Mdouble_,cimag, (_Mdouble_complex_ __z));

/* Real part of Z.  */

__MATHDECL (_Mdouble_,creal, (_Mdouble_complex_ __z));

/* Now some optimized versions.  GCC has handy notations for these

   functions.  Recent GCC handles these as builtin functions so does

   not need inlines.  */

#if defined __GNUC__ && !__GNUC_PREREQ (2, 97) && defined __OPTIMIZE__

/* Imaginary part of Z.  */

extern __inline _Mdouble_

__MATH_PRECNAME(cimag) (_Mdouble_complex_ __z) __THROW

{

  return __imag__ __z;

}

/* Real part of Z.  */

extern __inline _Mdouble_

__MATH_PRECNAME(creal) (_Mdouble_complex_ __z) __THROW

{

  return __real__ __z;

}

/* Complex conjugate of Z.  */

extern __inline _Mdouble_complex_

__MATH_PRECNAME(conj) (_Mdouble_complex_ __z) __THROW

{

  return __extension__ ~__z;

}

#endif