acd0c5776d
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3154 a95241bf-73f2-0310-859d-f6bbb57e9c96
98 lines
3.6 KiB
C
98 lines
3.6 KiB
C
/*
|
|
* Copyright (c) 1988, 1993
|
|
* The 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. 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.
|
|
*
|
|
* @(#)mathimpl.h 8.1 (Berkeley) 6/4/93
|
|
*/
|
|
|
|
#include <math.h>
|
|
|
|
#if defined(vax)||defined(tahoe)
|
|
|
|
/* Deal with different ways to concatenate in cpp */
|
|
# ifdef __STDC__
|
|
# define cat3(a,b,c) a ## b ## c
|
|
# else
|
|
# define cat3(a,b,c) a/**/b/**/c
|
|
# endif
|
|
|
|
/* Deal with vax/tahoe byte order issues */
|
|
# ifdef vax
|
|
# define cat3t(a,b,c) cat3(a,b,c)
|
|
# else
|
|
# define cat3t(a,b,c) cat3(a,c,b)
|
|
# endif
|
|
|
|
# define vccast(name) (*(const double *)(cat3(name,,x)))
|
|
|
|
/*
|
|
* Define a constant to high precision on a Vax or Tahoe.
|
|
*
|
|
* Args are the name to define, the decimal floating point value,
|
|
* four 16-bit chunks of the float value in hex
|
|
* (because the vax and tahoe differ in float format!), the power
|
|
* of 2 of the hex-float exponent, and the hex-float mantissa.
|
|
* Most of these arguments are not used at compile time; they are
|
|
* used in a post-check to make sure the constants were compiled
|
|
* correctly.
|
|
*
|
|
* People who want to use the constant will have to do their own
|
|
* #define foo vccast(foo)
|
|
* since CPP cannot do this for them from inside another macro (sigh).
|
|
* We define "vccast" if this needs doing.
|
|
*/
|
|
# define vc(name, value, x1,x2,x3,x4, bexp, xval) \
|
|
static long const cat3(name,,x)[] = {cat3t(0x,x1,x2), cat3t(0x,x3,x4)};
|
|
|
|
# define ic(name, value, bexp, xval) ;
|
|
|
|
#else /* vax or tahoe */
|
|
|
|
/* Hooray, we have an IEEE machine */
|
|
# undef vccast
|
|
# define vc(name, value, x1,x2,x3,x4, bexp, xval) ;
|
|
|
|
# define ic(name, value, bexp, xval) \
|
|
static double const name = value;
|
|
|
|
#endif /* defined(vax)||defined(tahoe) */
|
|
|
|
|
|
/*
|
|
* Functions internal to the math package, yet not static.
|
|
*/
|
|
extern double __exp__E(double, double);
|
|
extern double __log__L(double);
|
|
|
|
struct Double {double a, b;};
|
|
double __exp__D(double, double);
|
|
struct Double __log__D(double);
|