FM / include

/usr/include

Name	Size	Mode	Actions
arpa/	-	0755	rm
asm/	-	0755	rm
asm-generic/	-	0755	rm
bind9/	-	0755	rm
bits/	-	0755	rm
bsock/	-	0755	rm
c++/	-	0755	rm
db4/	-	0755	rm
db4.2.52/	-	0755	rm
db4.3.29/	-	0755	rm
dns/	-	0755	rm
drm/	-	0755	rm
dst/	-	0755	rm
e2p/	-	0755	rm
et/	-	0755	rm
ext2fs/	-	0755	rm
fontconfig/	-	0755	rm
freetype2/	-	0755	rm
gdbm/	-	0755	rm
GL/	-	0755	rm
gnu/	-	0755	rm
gssapi/	-	0755	rm
gssrpc/	-	0755	rm
isc/	-	0755	rm
isccc/	-	0755	rm
isccfg/	-	0755	rm
kadm5/	-	0755	rm
krb5/	-	0755	rm
layout/	-	0755	rm
libexslt/	-	0755	rm
libltdl/	-	0755	rm
libpng12/	-	0755	rm
libxml2/	-	0755	rm
libxslt/	-	0755	rm
linux/	-	0755	rm
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lwres/	-	0755	rm
lzma/	-	0755	rm
mtd/	-	0755	rm
mysql/	-	0755	rm
ncurses/	-	0755	rm
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net/	-	0755	rm
netash/	-	0755	rm
netatalk/	-	0755	rm
netax25/	-	0755	rm
neteconet/	-	0755	rm
netinet/	-	0755	rm
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netiucv/	-	0755	rm
netpacket/	-	0755	rm
netrom/	-	0755	rm
netrose/	-	0755	rm
nfs/	-	0755	rm
numpy/	-	0755	rm
openssl/	-	0755	rm
PCSC/	-	0755	rm
protocols/	-	0755	rm
python2.6/	-	0755	rm
rdma/	-	0755	rm
readline/	-	0755	rm
rpc/	-	0755	rm
rpcsvc/	-	0755	rm
sasl/	-	0755	rm
scsi/	-	0755	rm
security/	-	0755	rm
selinux/	-	0755	rm
sepol/	-	0755	rm
sound/	-	0755	rm
sys/	-	0755	rm
uapi/	-	0755	rm
unicode/	-	0755	rm
video/	-	0755	rm
X11/	-	0755	rm
xcb/	-	0755	rm
xen/	-	0755	rm
yaz/	-	0755	rm
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aio.h	7502	0644	edit dl rm
aliases.h	2115	0644	edit dl rm
alloca.h	1289	0644	edit dl rm
ar.h	1792	0644	edit dl rm
argp.h	26521	0644	edit dl rm
argz.h	7308	0644	edit dl rm
assert.h	3506	0644	edit dl rm
autosprintf.h	2284	0644	edit dl rm
byteswap.h	1489	0644	edit dl rm
complex.h	3557	0644	edit dl rm
cpio.h	2335	0644	edit dl rm
crypt.h	2341	0644	edit dl rm
ctype.h	11287	0644	edit dl rm
curses.h	79831	0644	edit dl rm
cursesapp.h	6582	0644	edit dl rm
cursesf.h	27630	0644	edit dl rm
cursesm.h	19486	0644	edit dl rm
cursesp.h	8473	0644	edit dl rm
cursesw.h	49264	0644	edit dl rm
cursslk.h	7304	0644	edit dl rm
db.h	99427	0444	edit dl rm
db_185.h	6010	0444	edit dl rm
db_cxx.h	38638	0444	edit dl rm
dirent.h	11318	0644	edit dl rm
dlfcn.h	7117	0644	edit dl rm
elf.h	117539	0644	edit dl rm
endian.h	2991	0644	edit dl rm
entities.h	4673	0644	edit dl rm
envz.h	2962	0644	edit dl rm
err.h	2313	0644	edit dl rm
errno.h	2452	0644	edit dl rm
error.h	2132	0644	edit dl rm
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features.h	12877	0644	edit dl rm
fenv.h	4670	0644	edit dl rm
FlexLexer.h	6217	0644	edit dl rm
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form.h	17190	0644	edit dl rm
fpu_control.h	3163	0644	edit dl rm
fstab.h	3115	0644	edit dl rm
ft2build.h	3890	0644	edit dl rm
fts.h	5290	0644	edit dl rm
ftw.h	5360	0644	edit dl rm
gconv.h	5339	0644	edit dl rm
gcrypt-module.h	7184	0644	edit dl rm
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gd.h	32790	0644	edit dl rm
gdbm.h	4744	0644	edit dl rm
gdcache.h	2812	0644	edit dl rm
gdfontg.h	623	0644	edit dl rm
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gdfx.h	2396	0644	edit dl rm
gd_io.h	1154	0644	edit dl rm
getopt.h	6740	0644	edit dl rm
gettext-po.h	14835	0644	edit dl rm
glob.h	7007	0644	edit dl rm
gnu-versions.h	2416	0644	edit dl rm
gpg-error.h	22689	0644	edit dl rm
grp.h	6991	0644	edit dl rm
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iconv.h	1949	0644	edit dl rm
idn-free.h	2299	0644	edit dl rm
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jconfig.h	1653	0644	edit dl rm
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jpeglib.h	50207	0644	edit dl rm
kdb.h	58384	0644	edit dl rm
keyutils.h	6092	0644	edit dl rm
krb5.h	402	0644	edit dl rm
langinfo.h	16007	0644	edit dl rm
lastlog.h	126	0644	edit dl rm
lauxlib.h	5777	0644	edit dl rm
libaio.h	7252	0644	edit dl rm
libgen.h	1465	0644	edit dl rm
libintl.h	4702	0644	edit dl rm
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libssh2.h	48356	0644	edit dl rm
libssh2_publickey.h	4910	0644	edit dl rm
libssh2_sftp.h	15651	0644	edit dl rm
limits.h	4596	0644	edit dl rm
link.h	7221	0644	edit dl rm
locale.h	8032	0644	edit dl rm
ltdl.h	5715	0644	edit dl rm
lua.h	11688	0644	edit dl rm
lua.hpp	191	0644	edit dl rm
luaconf.h	22128	0644	edit dl rm
lualib.h	1026	0644	edit dl rm
lzma.h	9306	0644	edit dl rm
malloc.h	6297	0644	edit dl rm
math.h	15987	0644	edit dl rm
mcheck.h	2521	0644	edit dl rm
memory.h	1029	0644	edit dl rm
menu.h	11845	0644	edit dl rm
mntent.h	3465	0644	edit dl rm
monetary.h	1835	0644	edit dl rm
mqueue.h	3872	0644	edit dl rm
ncurses.h	79831	0644	edit dl rm
ncurses_dll.h	3898	0644	edit dl rm
nc_tparm.h	3947	0644	edit dl rm
netdb.h	28267	0644	edit dl rm
nl_types.h	1842	0644	edit dl rm
nss.h	1962	0644	edit dl rm
obstack.h	19673	0644	edit dl rm
panel.h	3770	0644	edit dl rm
paths.h	2973	0644	edit dl rm
png.h	161982	0644	edit dl rm
pngconf.h	50992	0644	edit dl rm
poll.h	22	0644	edit dl rm
pr29.h	1974	0644	edit dl rm
printf.h	6805	0644	edit dl rm
profile.h	12154	0644	edit dl rm
pthread.h	40491	0644	edit dl rm
pty.h	1610	0644	edit dl rm
punycode.h	9425	0644	edit dl rm
pwd.h	6079	0644	edit dl rm
regex.h	21871	0644	edit dl rm
regexp.h	7123	0644	edit dl rm
resolv.h	14765	0644	edit dl rm
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sched.h	4730	0644	edit dl rm
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setjmp.h	4112	0644	edit dl rm
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shadow.h	5302	0644	edit dl rm
signal.h	13662	0644	edit dl rm
spawn.h	6763	0644	edit dl rm
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stdio.h	31568	0644	edit dl rm
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stdlib.h	34254	0644	edit dl rm
string.h	22612	0644	edit dl rm
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syscall.h	25	0644	edit dl rm
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tar.h	3771	0644	edit dl rm
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time.h	13534	0644	edit dl rm
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values.h	2029	0644	edit dl rm
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wait.h	22	0644	edit dl rm
wchar.h	32383	0644	edit dl rm
wctype.h	11227	0644	edit dl rm
wordexp.h	2592	0644	edit dl rm
xlocale.h	1771	0644	edit dl rm
yaml.h	54224	0644	edit dl rm
zconf.h	9544	0644	edit dl rm
zlib.h	66188	0644	edit dl rm
_G_config.h	2526	0644	edit dl rm

Edit: /usr/include/math.h (15987B)

/* Declarations for math functions.
   Copyright (C) 1991-1993, 1995-1999, 2001, 2002, 2004, 2006, 2009
   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 Standard: 7.12 Mathematics	<math.h>
 */

#ifndef	_MATH_H
#define	_MATH_H	1

#include <features.h>

__BEGIN_DECLS

/* Get machine-dependent HUGE_VAL value (returned on overflow).
   On all IEEE754 machines, this is +Infinity.  */
#include <bits/huge_val.h>
#ifdef __USE_ISOC99
# include <bits/huge_valf.h>
# include <bits/huge_vall.h>

/* Get machine-dependent INFINITY value.  */
# include <bits/inf.h>

/* Get machine-dependent NAN value (returned for some domain errors).  */
# include <bits/nan.h>
#endif /* __USE_ISOC99 */

/* Get general and ISO C99 specific information.  */
#include <bits/mathdef.h>

/* The file <bits/mathcalls.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,suffix, args)	\
  __MATHDECL (_Mdouble_,function,suffix, args)
#define __MATHDECL(type, function,suffix, args) \
  __MATHDECL_1(type, function,suffix, args); \
  __MATHDECL_1(type, __CONCAT(__,function),suffix, args)
#define __MATHCALLX(function,suffix, args, attrib)	\
  __MATHDECLX (_Mdouble_,function,suffix, args, attrib)
#define __MATHDECLX(type, function,suffix, args, attrib) \
  __MATHDECL_1(type, function,suffix, args) __attribute__ (attrib); \
  __MATHDECL_1(type, __CONCAT(__,function),suffix, args) __attribute__ (attrib)
#define __MATHDECL_1(type, function,suffix, args) \
  extern type __MATH_PRECNAME(function,suffix) args __THROW

#define _Mdouble_ 		double
#define __MATH_PRECNAME(name,r)	__CONCAT(name,r)
# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_STD
# define _Mdouble_END_NAMESPACE   __END_NAMESPACE_STD
#include <bits/mathcalls.h>
#undef	_Mdouble_
#undef _Mdouble_BEGIN_NAMESPACE
#undef _Mdouble_END_NAMESPACE
#undef	__MATH_PRECNAME

#if defined __USE_MISC || defined __USE_ISOC99

/* Include the file of declarations again, this time using `float'
   instead of `double' and appending f to each function name.  */

# ifndef _Mfloat_
#  define _Mfloat_		float
# endif
# define _Mdouble_ 		_Mfloat_
# ifdef __STDC__
#  define __MATH_PRECNAME(name,r) name##f##r
# else
#  define __MATH_PRECNAME(name,r) name/**/f/**/r
# endif
# define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99
# define _Mdouble_END_NAMESPACE   __END_NAMESPACE_C99
# include <bits/mathcalls.h>
# undef	_Mdouble_
# undef _Mdouble_BEGIN_NAMESPACE
# undef _Mdouble_END_NAMESPACE
# undef	__MATH_PRECNAME

# if (__STDC__ - 0 || __GNUC__ - 0) \
     && (!defined __NO_LONG_DOUBLE_MATH || defined __LDBL_COMPAT)
#  ifdef __LDBL_COMPAT

#   ifdef __USE_ISOC99
extern float __nldbl_nexttowardf (float __x, long double __y)
				  __THROW __attribute__ ((__const__));
#    ifdef __REDIRECT_NTH
extern float __REDIRECT_NTH (nexttowardf, (float __x, long double __y),
			     __nldbl_nexttowardf)
     __attribute__ ((__const__));
extern double __REDIRECT_NTH (nexttoward, (double __x, long double __y),
			      nextafter) __attribute__ ((__const__));
extern long double __REDIRECT_NTH (nexttowardl,
				   (long double __x, long double __y),
				   nextafter) __attribute__ ((__const__));
#    endif
#   endif

/* Include the file of declarations again, this time using `long double'
   instead of `double' and appending l to each function name.  */

#   undef __MATHDECL_1
#   define __MATHDECL_2(type, function,suffix, args, alias) \
  extern type __REDIRECT_NTH(__MATH_PRECNAME(function,suffix), \
			     args, alias)
#   define __MATHDECL_1(type, function,suffix, args) \
  __MATHDECL_2(type, function,suffix, args, __CONCAT(function,suffix))
#  endif

#  ifndef _Mlong_double_
#   define _Mlong_double_	long double
#  endif
#  define _Mdouble_ 		_Mlong_double_
#  ifdef __STDC__
#   define __MATH_PRECNAME(name,r) name##l##r
#  else
#   define __MATH_PRECNAME(name,r) name/**/l/**/r
#  endif
#  define _Mdouble_BEGIN_NAMESPACE __BEGIN_NAMESPACE_C99
#  define _Mdouble_END_NAMESPACE   __END_NAMESPACE_C99
#  include <bits/mathcalls.h>
#  undef _Mdouble_
# undef _Mdouble_BEGIN_NAMESPACE
# undef _Mdouble_END_NAMESPACE
#  undef __MATH_PRECNAME

# endif /* __STDC__ || __GNUC__ */

#endif	/* Use misc or ISO C99.  */
#undef	__MATHDECL_1
#undef	__MATHDECL
#undef	__MATHCALL

#if defined __USE_MISC || defined __USE_XOPEN
/* This variable is used by `gamma' and `lgamma'.  */
extern int signgam;
#endif

/* ISO C99 defines some generic macros which work on any data type.  */
#ifdef __USE_ISOC99

/* Get the architecture specific values describing the floating-point
   evaluation.  The following symbols will get defined:

float_t	floating-point type at least as wide as `float' used
		to evaluate `float' expressions
    double_t	floating-point type at least as wide as `double' used
		to evaluate `double' expressions

FLT_EVAL_METHOD
		Defined to
		  0	if `float_t' is `float' and `double_t' is `double'
		  1	if `float_t' and `double_t' are `double'
		  2	if `float_t' and `double_t' are `long double'
		  else	`float_t' and `double_t' are unspecified

INFINITY	representation of the infinity value of type `float'

FP_FAST_FMA
    FP_FAST_FMAF
    FP_FAST_FMAL
		If defined it indicates that the `fma' function
		generally executes about as fast as a multiply and an add.
		This macro is defined only iff the `fma' function is
		implemented directly with a hardware multiply-add instructions.

FP_ILOGB0	Expands to a value returned by `ilogb (0.0)'.
    FP_ILOGBNAN	Expands to a value returned by `ilogb (NAN)'.

DECIMAL_DIG	Number of decimal digits supported by conversion between
		decimal and all internal floating-point formats.

/* All floating-point numbers can be put in one of these categories.  */
enum
  {
    FP_NAN,
# define FP_NAN FP_NAN
    FP_INFINITE,
# define FP_INFINITE FP_INFINITE
    FP_ZERO,
# define FP_ZERO FP_ZERO
    FP_SUBNORMAL,
# define FP_SUBNORMAL FP_SUBNORMAL
    FP_NORMAL
# define FP_NORMAL FP_NORMAL
  };

/* Return number of classification appropriate for X.  */
# ifdef __NO_LONG_DOUBLE_MATH
#  define fpclassify(x) \
     (sizeof (x) == sizeof (float) ? __fpclassifyf (x) : __fpclassify (x))
# else
#  define fpclassify(x) \
     (sizeof (x) == sizeof (float)					      \
      ? __fpclassifyf (x)						      \
      : sizeof (x) == sizeof (double)					      \
      ? __fpclassify (x) : __fpclassifyl (x))
# endif

/* Return nonzero value if sign of X is negative.  */
# ifdef __NO_LONG_DOUBLE_MATH
#  define signbit(x) \
     (sizeof (x) == sizeof (float) ? __signbitf (x) : __signbit (x))
# else
#  define signbit(x) \
     (sizeof (x) == sizeof (float)					      \
      ? __signbitf (x)							      \
      : sizeof (x) == sizeof (double)					      \
      ? __signbit (x) : __signbitl (x))
# endif

/* Return nonzero value if X is not +-Inf or NaN.  */
# ifdef __NO_LONG_DOUBLE_MATH
#  define isfinite(x) \
     (sizeof (x) == sizeof (float) ? __finitef (x) : __finite (x))
# else
#  define isfinite(x) \
     (sizeof (x) == sizeof (float)					      \
      ? __finitef (x)							      \
      : sizeof (x) == sizeof (double)					      \
      ? __finite (x) : __finitel (x))
# endif

/* Return nonzero value if X is neither zero, subnormal, Inf, nor NaN.  */
# define isnormal(x) (fpclassify (x) == FP_NORMAL)

/* Return nonzero value if X is a NaN.  We could use `fpclassify' but
   we already have this functions `__isnan' and it is faster.  */
# ifdef __NO_LONG_DOUBLE_MATH
#  define isnan(x) \
     (sizeof (x) == sizeof (float) ? __isnanf (x) : __isnan (x))
# else
#  define isnan(x) \
     (sizeof (x) == sizeof (float)					      \
      ? __isnanf (x)							      \
      : sizeof (x) == sizeof (double)					      \
      ? __isnan (x) : __isnanl (x))
# endif

/* Return nonzero value is X is positive or negative infinity.  */
# ifdef __NO_LONG_DOUBLE_MATH
#  define isinf(x) \
     (sizeof (x) == sizeof (float) ? __isinff (x) : __isinf (x))
# else
#  define isinf(x) \
     (sizeof (x) == sizeof (float)					      \
      ? __isinff (x)							      \
      : sizeof (x) == sizeof (double)					      \
      ? __isinf (x) : __isinfl (x))
# endif

/* Bitmasks for the math_errhandling macro.  */
# define MATH_ERRNO	1	/* errno set by math functions.  */
# define MATH_ERREXCEPT	2	/* Exceptions raised by math functions.  */

/* By default all functions support both errno and exception handling.
   In gcc's fast math mode and if inline functions are defined this
   might not be true.  */
# ifndef __FAST_MATH__
#  define math_errhandling	(MATH_ERRNO | MATH_ERREXCEPT)
# endif

#endif /* Use ISO C99.  */

#ifdef	__USE_MISC
/* Support for various different standard error handling behaviors.  */
typedef enum
{
  _IEEE_ = -1,	/* According to IEEE 754/IEEE 854.  */
  _SVID_,	/* According to System V, release 4.  */
  _XOPEN_,	/* Nowadays also Unix98.  */
  _POSIX_,
  _ISOC_	/* Actually this is ISO C99.  */
} _LIB_VERSION_TYPE;

/* This variable can be changed at run-time to any of the values above to
   affect floating point error handling behavior (it may also be necessary
   to change the hardware FPU exception settings).  */
extern _LIB_VERSION_TYPE _LIB_VERSION;
#endif

#ifdef __USE_SVID
/* In SVID error handling, `matherr' is called with this description
   of the exceptional condition.

We have a problem when using C++ since `exception' is a reserved
   name in C++.  */
# ifdef __cplusplus
struct __exception
# else
struct exception
# endif
  {
    int type;
    char *name;
    double arg1;
    double arg2;
    double retval;
  };

# ifdef __cplusplus
extern int matherr (struct __exception *__exc) throw ();
# else
extern int matherr (struct exception *__exc);
# endif

# define X_TLOSS	1.41484755040568800000e+16

/* Types of exceptions in the `type' field.  */
# define DOMAIN		1
# define SING		2
# define OVERFLOW	3
# define UNDERFLOW	4
# define TLOSS		5
# define PLOSS		6

/* SVID mode specifies returning this large value instead of infinity.  */
# define HUGE		3.40282347e+38F

#else	/* !SVID */

# ifdef __USE_XOPEN
/* X/Open wants another strange constant.  */
#  define MAXFLOAT	3.40282347e+38F
# endif

#endif	/* SVID */

/* Some useful constants.  */
#if defined __USE_BSD || defined __USE_XOPEN
# define M_E		2.7182818284590452354	/* e */
# define M_LOG2E	1.4426950408889634074	/* log_2 e */
# define M_LOG10E	0.43429448190325182765	/* log_10 e */
# define M_LN2		0.69314718055994530942	/* log_e 2 */
# define M_LN10		2.30258509299404568402	/* log_e 10 */
# define M_PI		3.14159265358979323846	/* pi */
# define M_PI_2		1.57079632679489661923	/* pi/2 */
# define M_PI_4		0.78539816339744830962	/* pi/4 */
# define M_1_PI		0.31830988618379067154	/* 1/pi */
# define M_2_PI		0.63661977236758134308	/* 2/pi */
# define M_2_SQRTPI	1.12837916709551257390	/* 2/sqrt(pi) */
# define M_SQRT2	1.41421356237309504880	/* sqrt(2) */
# define M_SQRT1_2	0.70710678118654752440	/* 1/sqrt(2) */
#endif

/* The above constants are not adequate for computation using `long double's.
   Therefore we provide as an extension constants with similar names as a
   GNU extension.  Provide enough digits for the 128-bit IEEE quad.  */
#ifdef __USE_GNU
# define M_El		2.7182818284590452353602874713526625L  /* e */
# define M_LOG2El	1.4426950408889634073599246810018921L  /* log_2 e */
# define M_LOG10El	0.4342944819032518276511289189166051L  /* log_10 e */
# define M_LN2l		0.6931471805599453094172321214581766L  /* log_e 2 */
# define M_LN10l	2.3025850929940456840179914546843642L  /* log_e 10 */
# define M_PIl		3.1415926535897932384626433832795029L  /* pi */
# define M_PI_2l	1.5707963267948966192313216916397514L  /* pi/2 */
# define M_PI_4l	0.7853981633974483096156608458198757L  /* pi/4 */
# define M_1_PIl	0.3183098861837906715377675267450287L  /* 1/pi */
# define M_2_PIl	0.6366197723675813430755350534900574L  /* 2/pi */
# define M_2_SQRTPIl	1.1283791670955125738961589031215452L  /* 2/sqrt(pi) */
# define M_SQRT2l	1.4142135623730950488016887242096981L  /* sqrt(2) */
# define M_SQRT1_2l	0.7071067811865475244008443621048490L  /* 1/sqrt(2) */
#endif

/* When compiling in strict ISO C compatible mode we must not use the
   inline functions since they, among other things, do not set the
   `errno' variable correctly.  */
#if defined __STRICT_ANSI__ && !defined __NO_MATH_INLINES
# define __NO_MATH_INLINES	1
#endif

#if defined __USE_ISOC99 && __GNUC_PREREQ(2,97)
/* ISO C99 defines some macros to compare number while taking care for
   unordered numbers.  Many FPUs provide special instructions to support
   these operations.  Generic support in GCC for these as builtins went
   in before 3.0.0, but not all cpus added their patterns.  We define
   versions that use the builtins here, and <bits/mathinline.h> will
   undef/redefine as appropriate for the specific GCC version in use.  */
# define isgreater(x, y)	__builtin_isgreater(x, y)
# define isgreaterequal(x, y)	__builtin_isgreaterequal(x, y)
# define isless(x, y)		__builtin_isless(x, y)
# define islessequal(x, y)	__builtin_islessequal(x, y)
# define islessgreater(x, y)	__builtin_islessgreater(x, y)
# define isunordered(u, v)	__builtin_isunordered(u, v)
#endif

/* Get machine-dependent inline versions (if there are any).  */
#ifdef __USE_EXTERN_INLINES
# include <bits/mathinline.h>
#endif

#ifdef __USE_ISOC99
/* If we've still got undefined comparison macros, provide defaults.  */

/* Return nonzero value if X is greater than Y.  */
# ifndef isgreater
#  define isgreater(x, y) \
  (__extension__							      \
   ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y);			      \
      !isunordered (__x, __y) && __x > __y; }))
# endif

/* Return nonzero value if X is greater than or equal to Y.  */
# ifndef isgreaterequal
#  define isgreaterequal(x, y) \
  (__extension__							      \
   ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y);			      \
      !isunordered (__x, __y) && __x >= __y; }))
# endif

/* Return nonzero value if X is less than Y.  */
# ifndef isless
#  define isless(x, y) \
  (__extension__							      \
   ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y);			      \
      !isunordered (__x, __y) && __x < __y; }))
# endif

/* Return nonzero value if X is less than or equal to Y.  */
# ifndef islessequal
#  define islessequal(x, y) \
  (__extension__							      \
   ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y);			      \
      !isunordered (__x, __y) && __x <= __y; }))
# endif

/* Return nonzero value if either X is less than Y or Y is less than X.  */
# ifndef islessgreater
#  define islessgreater(x, y) \
  (__extension__							      \
   ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y);			      \
      !isunordered (__x, __y) && (__x < __y || __y < __x); }))
# endif

/* Return nonzero value if arguments are unordered.  */
# ifndef isunordered
#  define isunordered(u, v) \
  (__extension__							      \
   ({ __typeof__(u) __u = (u); __typeof__(v) __v = (v);			      \
      fpclassify (__u) == FP_NAN || fpclassify (__v) == FP_NAN; }))
# endif

#endif

__END_DECLS

#endif /* math.h  */

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