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- /*
- * Copyright (c) 1988 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 5.4 (Berkeley) 3/5/91
- */
-
- #include <sys/cdefs.h>
- #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) \
- const static long 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) \
- const static double name = value;
-
- #endif /* defined(vax)||defined(tahoe) */
-
-
- /*
- * Functions internal to the math package, yet not static.
- */
- extern double exp__E();
- extern double log__L();
-
-