/usr/include/complex.h is in libc6-dev 2.15-0ubuntu10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 | /* Copyright (C) 1997, 1998, 1999, 2000, 2006, 2011 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 && defined _LIBC) \
|| defined __LDBL_COMPAT)
# if defined __LDBL_COMPAT || defined __NO_LONG_DOUBLE_MATH
# undef __MATHDECL_1
# define __MATHDECL_1(type, function, args) \
extern type __REDIRECT_NTH(__MATH_PRECNAME(function), args, function)
# endif
# 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 */
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