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001: /* Copyright (C) 1997, 1998, 1999, 2000, 2006, 2011 Free Software Foundation, Inc.
002:    This file is part of the GNU C Library.
003: 
004:    The GNU C Library is free software; you can redistribute it and/or
005:    modify it under the terms of the GNU Lesser General Public
006:    License as published by the Free Software Foundation; either
007:    version 2.1 of the License, or (at your option) any later version.
008: 
009:    The GNU C Library is distributed in the hope that it will be useful,
010:    but WITHOUT ANY WARRANTY; without even the implied warranty of
011:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
012:    Lesser General Public License for more details.
013: 
014:    You should have received a copy of the GNU Lesser General Public
015:    License along with the GNU C Library; if not, write to the Free
016:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
017:    02111-1307 USA.  */
018: 
019: /*
020:  *      ISO C99:  7.3 Complex arithmetic        <complex.h>
021:  */
022: 
023: #ifndef _COMPLEX_H
024: #define _COMPLEX_H      1
025: 
026: #include <features.h>
027: 
028: /* Get general and ISO C99 specific information.  */
029: #include <bits/mathdef.h>
030: 
031: __BEGIN_DECLS
032: 
033: /* We might need to add support for more compilers here.  But since ISO
034:    C99 is out hopefully all maintained compilers will soon provide the data
035:    types `float complex' and `double complex'.  */
036: #if __GNUC_PREREQ (2, 7) && !__GNUC_PREREQ (2, 97)
037: # define _Complex __complex__
038: #endif
039: 
040: #define complex         _Complex
041: 
042: /* Narrowest imaginary unit.  This depends on the floating-point
043:    evaluation method.
044:    XXX This probably has to go into a gcc related file.  */
045: #define _Complex_I      (__extension__ 1.0iF)
046: 
047: /* Another more descriptive name is `I'.
048:    XXX Once we have the imaginary support switch this to _Imaginary_I.  */
049: #undef I
050: #define I _Complex_I
051: 
052: /* The file <bits/cmathcalls.h> contains the prototypes for all the
053:    actual math functions.  These macros are used for those prototypes,
054:    so we can easily declare each function as both `name' and `__name',
055:    and can declare the float versions `namef' and `__namef'.  */
056: 
057: #define __MATHCALL(function, args)      \
058:   __MATHDECL (_Mdouble_complex_,function, args)
059: #define __MATHDECL(type, function, args) \
060:   __MATHDECL_1(type, function, args); \
061:   __MATHDECL_1(type, __CONCAT(__,function), args)
062: #define __MATHDECL_1(type, function, args) \
063:   extern type __MATH_PRECNAME(function) args __THROW
064: 
065: #define _Mdouble_               double
066: #define __MATH_PRECNAME(name)   name
067: #include <bits/cmathcalls.h>
068: #undef  _Mdouble_
069: #undef  __MATH_PRECNAME
070: 
071: /* Now the float versions.  */
072: #ifndef _Mfloat_
073: # define _Mfloat_               float
074: #endif
075: #define _Mdouble_               _Mfloat_
076: #ifdef __STDC__
077: # define __MATH_PRECNAME(name)  name##f
078: #else
079: # define __MATH_PRECNAME(name)  name/**/f
080: #endif
081: #include <bits/cmathcalls.h>
082: #undef  _Mdouble_
083: #undef  __MATH_PRECNAME
084: 
085: /* And the long double versions.  It is non-critical to define them
086:    here unconditionally since `long double' is required in ISO C99.  */
087: #if (__STDC__ - 0 || __GNUC__ - 0) \
088:     && (!(defined __NO_LONG_DOUBLE_MATH && defined _LIBC) \
089:         || defined __LDBL_COMPAT)
090: # if defined __LDBL_COMPAT || defined __NO_LONG_DOUBLE_MATH
091: #  undef __MATHDECL_1
092: #  define __MATHDECL_1(type, function, args) \
093:   extern type __REDIRECT_NTH(__MATH_PRECNAME(function), args, function)
094: # endif
095: 
096: # ifndef _Mlong_double_
097: #  define _Mlong_double_        long double
098: # endif
099: # define _Mdouble_              _Mlong_double_
100: # ifdef __STDC__
101: #  define __MATH_PRECNAME(name) name##l
102: # else
103: #  define __MATH_PRECNAME(name) name/**/l
104: # endif
105: # include <bits/cmathcalls.h>
106: #endif
107: #undef  _Mdouble_
108: #undef  __MATH_PRECNAME
109: #undef  __MATHDECL_1
110: #undef  __MATHDECL
111: #undef  __MATHCALL
112: 
113: __END_DECLS
114: 
115: #endif /* complex.h */
116: 

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