linux-sgx-trts-modified/common/inc/tlibc/float.h

/* $OpenBSD: float.h,v 1.3 2008/07/21 20:50:54 martynas Exp $ */
/* $NetBSD: float.h,v 1.8 1995/06/20 20:45:37 jtc Exp $ */

/*
 * Copyright (c) 1989 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * @(#)float.h 7.1 (Berkeley) 5/8/90
 */

#ifndef _FLOAT_H_
#define _FLOAT_H_

#include <sys/cdefs.h>

#define FLT_RADIX       2        /* b */

// The rounding direction can be specified by fesetround() in <fenv.h>
#define FLT_ROUNDS      1        /* addition rounding: near */
#define DECIMAL_DIG     21       /* max precision in decimal digits */

// NOTE: FLT_EVAL_METHOD is -1 under FREEBSD x86. 
#ifdef __i386__
#define FLT_EVAL_METHOD 2        /* long double */
#else
#define FLT_EVAL_METHOD 0        /* no promotions */
#endif

#define DBL_MANT_DIG    53
#define DBL_EPSILON     2.2204460492503131E-16
#define DBL_DIG         15
#define DBL_MIN_EXP     (-1021)
#define DBL_MIN         2.2250738585072014E-308
#define DBL_MIN_10_EXP  (-307)
#define DBL_MAX_EXP     1024
#define DBL_MAX_10_EXP  308

#define FLT_MANT_DIG    24                      /* p */
#define FLT_DIG         6                       /* floor((p-1)*log10(b))+(b == 10) */
#define FLT_MIN_EXP     (-125)                  /* emin */
#define FLT_MIN_10_EXP  (-37)                   /* ceil(log10(b**(emin-1))) */
#define FLT_MAX_EXP     128                     /* emax */
#define FLT_MAX_10_EXP  38                      /* floor(log10((1-b**(-p))*b**emax)) */

#define DBL_MAX         1.7976931348623157E+308
#define FLT_EPSILON     1.19209290E-07F         /* b**(1-p) */
#define FLT_MIN         1.17549435E-38F         /* b**(emin-1) */
#define FLT_MAX         3.40282347E+38F         /* (1-b**(-p))*b**emax */

#define LDBL_MANT_DIG   64
#define LDBL_EPSILON    1.08420217248550443401e-19L
#define LDBL_DIG        18
#define LDBL_MIN_EXP    (-16381)
#define LDBL_MIN        3.36210314311209350626e-4932L
#define LDBL_MIN_10_EXP (-4931)
#define LDBL_MAX_EXP    16384
#define LDBL_MAX        1.18973149535723176502e+4932L
#define LDBL_MAX_10_EXP 4932

#endif  /* _FLOAT_H_ */