-/* math.h 4.3 %G% */
-
-extern double asinh(), acosh(), atanh();
-extern double erf(), erfc();
-extern double E(), L(), exp(), log(), log10(), pow();
-extern double fabs(), floor(), ceil();
-extern double gamma();
-extern double hypot(), cabs();
-extern double copysign(), drem(), logb(), scalb();
-extern double j0(), j1(), jn(), y0(), y1(), yn();
-extern double sin(), cos(), tan(), asin(), acos(), atan(), atan2();
-extern double sinh(), cosh(), tanh();
-extern double cbrt(), sqrt();
-extern double modf(), ldexp(), frexp(), atof();
-
-#define HUGE 1.701411733192644270e38
+/*
+ * Copyright (c) 1985, 1990 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.
+ *
+ * @(#)math.h 5.8 (Berkeley) 4/2/91
+ */
+
+#ifndef _MATH_H_
+#define _MATH_H_
+
+#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 */
+#define M_LOG10E 0.43429448190325182765 /* log 10e */
+#define M_LN2 0.69314718055994530942 /* log e2 */
+#define M_LN10 2.30258509299404568402 /* log e10 */
+#define M_PI 3.14159265358979323846 /* pi */
+#define M_PI_2 1.57079632679489661923 /* pi/2 */
+#define M_PI_4 0.78539816339744830962 /* pi/4 */
+#define M_1_PI 0.31830988618379067154 /* 1/pi */
+#define M_2_PI 0.63661977236758134308 /* 2/pi */
+#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
+#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
+#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+double acos __P((double));
+double asin __P((double));
+double atan __P((double));
+double atan2 __P((double, double));
+double ceil __P((double));
+double cos __P((double));
+double cosh __P((double));
+double exp __P((double));
+double fabs __P((double));
+double floor __P((double));
+double fmod __P((double, double));
+double frexp __P((double, int *));
+double ldexp __P((double, int));
+double log __P((double));
+double log10 __P((double));
+double modf __P((double, double *));
+double pow __P((double, double));
+double sin __P((double));
+double sinh __P((double));
+double sqrt __P((double));
+double tan __P((double));
+double tanh __P((double));
+
+#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
+double acosh __P((double));
+double asinh __P((double));
+double atanh __P((double));
+double cabs(); /* we can't describe cabs()'s argument properly */
+double cbrt __P((double));
+double copysign __P((double, double));
+double drem __P((double, double));
+double erf __P((double));
+double erfc __P((double));
+double expm1 __P((double));
+int finite __P((double));
+double hypot __P((double, double));
+#if defined(vax) || defined(tahoe)
+double infnan __P((int));
+#endif
+int isinf __P((double));
+int isnan __P((double));
+double j0 __P((double));
+double j1 __P((double));
+double jn __P((int, double));
+double lgamma __P((double));
+double log1p __P((double));
+double logb __P((double));
+double rint __P((double));
+double scalb __P((double, int));
+double y0 __P((double));
+double y1 __P((double));
+double yn __P((int, double));
+#endif
+
+__END_DECLS
+
+#endif /* _MATH_H_ */
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