8cf5ed5125
o Add a MD header private to libc called _fpmath.h; this header
contains bitfield layouts of MD floating-point types.
o Add a MI header private to libc called fpmath.h; this header
contains bitfield layouts of MI floating-point types.
o Add private libc variables to lib/libc/$arch/gen/infinity.c for
storing NaN values.
o Add __double_t and __float_t to <machine/_types.h>, and provide
double_t and float_t typedefs in <math.h>.
o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF,
HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to
<math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via
<machine/float.h>.
o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based
on the size of its argument. __fpclassifyl() is never called on
alpha because (sizeof(long double) == sizeof(double)), which is good
since __fpclassifyl() can't deal with such a small `long double'.
This was developed by David Schultz and myself with input from bde and
fenner.
PR: 23103
Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU>
(significant portions)
Reviewed by: bde, fenner (earlier versions)
92 lines
3.7 KiB
C
92 lines
3.7 KiB
C
/*
|
|
* Copyright (c) 1992, 1993, 2001
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This software was developed by the Computer Systems Engineering group
|
|
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
|
* contributed to Berkeley.
|
|
*
|
|
* All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Lawrence Berkeley Laboratory.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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 8.1 (Berkeley) 6/11/93
|
|
* from: NetBSD: float.h,v 1.3 2001/09/21 20:48:02 eeh Exp
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_FLOAT_H_
|
|
#define _MACHINE_FLOAT_H_
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__BEGIN_DECLS
|
|
extern int __flt_rounds(void);
|
|
__END_DECLS
|
|
|
|
#define FLT_RADIX 2 /* b */
|
|
#define FLT_ROUNDS __flt_rounds()
|
|
#define FLT_EVAL_METHOD 0 /* no promotion */
|
|
#define DECIMAL_DIG 35 /* max precision in decimal digits */
|
|
|
|
#define FLT_MANT_DIG 24 /* p */
|
|
#define FLT_EPSILON 1.19209290E-7F /* b**(1-p) */
|
|
#define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */
|
|
#define FLT_MIN_EXP (-125) /* emin */
|
|
#define FLT_MIN 1.17549435E-38F /* b**(emin-1) */
|
|
#define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */
|
|
#define FLT_MAX_EXP 128 /* emax */
|
|
#define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */
|
|
#define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */
|
|
|
|
#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 1.7976931348623157E+308
|
|
#define DBL_MAX_10_EXP 308
|
|
|
|
#define LDBL_MANT_DIG 113
|
|
#define LDBL_EPSILON 1.925929944387235853055977942584927319E-34L
|
|
#define LDBL_DIG 33
|
|
#define LDBL_MIN_EXP (-16381)
|
|
#define LDBL_MIN 3.362103143112093506262677817321752603E-4932L
|
|
#define LDBL_MIN_10_EXP (-4931)
|
|
#define LDBL_MAX_EXP (+16384)
|
|
#define LDBL_MAX 1.189731495357231765085759326628007016E+4932L
|
|
#define LDBL_MAX_10_EXP (+4932)
|
|
|
|
#endif /* _MACHINE_FLOAT_H_ */
|