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tasks/libposix/include/posix/complex.h

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+/* Copyright (C) 1997, 1998, 1999, 2000 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.  */
+
+/*
+ *	ISO C99:  7.3 Complex arithmetic	<complex.h>
+ */
+
+#ifndef _COMPLEX_H
+#define _COMPLEX_H	1
+
+#include <features.h>
+
+/* Get general and ISO C99 specific information.  */
+#include <bits/mathdef.h>
+
+__BEGIN_DECLS
+
+/* We might need to add support for more compilers here.  But since ISO
+   C99 is out hopefully all maintained compilers will soon provide the data
+   types `float complex' and `double complex'.  */
+#if __GNUC_PREREQ(2, 7) && !__GNUC_PREREQ(2, 97)
+# define _Complex __complex__
+#endif
+
+#define complex		_Complex
+
+/* Narrowest imaginary unit.  This depends on the floating-point
+   evaluation method.
+   XXX This probably has to go into a gcc related file.  */
+#define _Complex_I	(__extension__ 1.0iF)
+
+/* Another more descriptive name is `I'.
+   XXX Once we have the imaginary support switch this to _Imaginary_I.  */
+#undef I
+#define I _Complex_I
+
+/* The file <bits/cmathcalls.h> contains the prototypes for all the
+   actual math functions.  These macros are used for those prototypes,
+   so we can easily declare each function as both `name' and `__name',
+   and can declare the float versions `namef' and `__namef'.  */
+
+#define __MATHCALL(function, args)	\
+  __MATHDECL (_Mdouble_complex_,function, args)
+#define __MATHDECL(type, function, args) \
+  __MATHDECL_1(type, function, args); \
+  __MATHDECL_1(type, __CONCAT(__,function), args)
+#define __MATHDECL_1(type, function, args) \
+  extern type __MATH_PRECNAME(function) args __THROW
+
+#define _Mdouble_ 		double
+#define __MATH_PRECNAME(name)	name
+#include <bits/cmathcalls.h>
+#undef	_Mdouble_
+#undef	__MATH_PRECNAME
+
+/* Now the float versions.  */
+#ifndef _Mfloat_
+# define _Mfloat_		float
+#endif
+#define _Mdouble_ 		_Mfloat_
+#ifdef __STDC__
+# define __MATH_PRECNAME(name)	name##f
+#else
+# define __MATH_PRECNAME(name)	name/**/f
+#endif
+#include <bits/cmathcalls.h>
+#undef	_Mdouble_
+#undef	__MATH_PRECNAME
+
+/* And the long double versions.  It is non-critical to define them
+   here unconditionally since `long double' is required in ISO C99.  */
+#if __STDC__ - 0 || __GNUC__ - 0 && !defined __NO_LONG_DOUBLE_MATH
+# ifndef _Mlong_double_
+#  define _Mlong_double_	long double
+# endif
+# define _Mdouble_ 		_Mlong_double_
+# ifdef __STDC__
+#  define __MATH_PRECNAME(name)	name##l
+# else
+#  define __MATH_PRECNAME(name)	name/**/l
+# endif
+# include <bits/cmathcalls.h>
+#endif
+#undef	_Mdouble_
+#undef	__MATH_PRECNAME
+#undef	__MATHDECL_1
+#undef	__MATHDECL
+#undef	__MATHCALL
+
+__END_DECLS
+
+#endif /* complex.h */