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113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
8 years ago
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/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/*
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* ISO C99: 7.3 Complex arithmetic <complex.h>
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*/
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#ifndef _COMPLEX_H
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#define _COMPLEX_H 1
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#include <features.h>
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/* Get general and ISO C99 specific information. */
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#include <bits/mathdef.h>
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__BEGIN_DECLS
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/* We might need to add support for more compilers here. But since ISO
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C99 is out hopefully all maintained compilers will soon provide the data
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types `float complex' and `double complex'. */
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#if __GNUC_PREREQ (2, 7) && !__GNUC_PREREQ (2, 97)
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# define _Complex __complex__
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#endif
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#define complex _Complex
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/* Narrowest imaginary unit. This depends on the floating-point
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evaluation method.
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XXX This probably has to go into a gcc related file. */
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#define _Complex_I (__extension__ 1.0iF)
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/* Another more descriptive name is `I'.
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XXX Once we have the imaginary support switch this to _Imaginary_I. */
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#undef I
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#define I _Complex_I
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#if defined __USE_ISOC11 && __GNUC_PREREQ (4, 7)
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/* Macros to expand into expression of specified complex type. */
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# define CMPLX(x, y) __builtin_complex ((double) (x), (double) (y))
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# define CMPLXF(x, y) __builtin_complex ((float) (x), (float) (y))
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# define CMPLXL(x, y) __builtin_complex ((long double) (x), (long double) (y))
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#endif
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/* The file <bits/cmathcalls.h> contains the prototypes for all the
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actual math functions. These macros are used for those prototypes,
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so we can easily declare each function as both `name' and `__name',
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and can declare the float versions `namef' and `__namef'. */
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#define __MATHCALL(function, args) \
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__MATHDECL (_Mdouble_complex_,function, args)
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#define __MATHDECL(type, function, args) \
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__MATHDECL_1(type, function, args); \
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__MATHDECL_1(type, __CONCAT(__,function), args)
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#define __MATHDECL_1(type, function, args) \
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extern type __MATH_PRECNAME(function) args __THROW
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#define _Mdouble_ double
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#define __MATH_PRECNAME(name) name
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#include <bits/cmathcalls.h>
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#undef _Mdouble_
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#undef __MATH_PRECNAME
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/* Now the float versions. */
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#ifndef _Mfloat_
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# define _Mfloat_ float
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#endif
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#define _Mdouble_ _Mfloat_
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#define __MATH_PRECNAME(name) name##f
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#include <bits/cmathcalls.h>
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#undef _Mdouble_
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#undef __MATH_PRECNAME
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/* And the long double versions. It is non-critical to define them
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here unconditionally since `long double' is required in ISO C99. */
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#if !(defined __NO_LONG_DOUBLE_MATH && defined _LIBC) \
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|| defined __LDBL_COMPAT
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# ifdef __LDBL_COMPAT
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# undef __MATHDECL_1
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# define __MATHDECL_1(type, function, args) \
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extern type __REDIRECT_NTH(__MATH_PRECNAME(function), args, function)
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# endif
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# ifndef _Mlong_double_
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# define _Mlong_double_ long double
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# endif
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# define _Mdouble_ _Mlong_double_
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# define __MATH_PRECNAME(name) name##l
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# include <bits/cmathcalls.h>
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#endif
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#undef _Mdouble_
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#undef __MATH_PRECNAME
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#undef __MATHDECL_1
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#undef __MATHDECL
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#undef __MATHCALL
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__END_DECLS
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#endif /* complex.h */
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