/*
- * Copyright (c) 1985 The Regents of the University of California.
+ * Copyright (c) 1985, 1990 The Regents of the University of California.
* All rights reserved.
*
- * %sccs.include.redist.c%
+ * 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.
*
- * All recipients should regard themselves as participants in an ongoing
- * research project and hence should feel obligated to report their
- * experiences (good or bad) with these elementary function codes, using
- * the sendbug(8) program, to the authors.
+ * 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.
*
- * @(#)math.h 5.6 (Berkeley) %G%
+ * @(#)math.h 5.8 (Berkeley) 4/2/91
*/
#ifndef _MATH_H_
#define _MATH_H_
-#if defined(vax) || defined(tahoe)
-#define HUGE_VAL 1.701411733192644270e+38
+#if defined(vax) || defined(tahoe) /* DBL_MAX from float.h */
+#define HUGE_VAL 1.701411834604692294E+38
#else
#define HUGE_VAL 1e500 /* IEEE: positive infinity */
#endif
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
+#if defined(vax) || defined(tahoe)
+/*
+ * HUGE for the VAX and Tahoe converts to the largest possible F-float value.
+ * This implies an understanding of the conversion behavior of atof(3). It
+ * was defined to be the largest float so that overflow didn't occur when it
+ * was assigned to a single precision number. HUGE_VAL is strongly preferred.
+ */
+#define HUGE 1.701411733192644270E+38
+#else
#define HUGE HUGE_VAL
#endif
+#endif
#define M_E 2.7182818284590452354 /* e */
#define M_LOG2E 1.4426950408889634074 /* log 2e */