BSD 4_4 release

[unix-history] / usr / include / math.h

diff --git a/usr/include/math.h b/usr/include/math.h
index 3fec7a2..dd0b20c 100644 (file)
--- a/usr/include/math.h
+++ b/usr/include/math.h
@@ -1,46 +1,132 @@
 /*
 /*

- * Copyright (c) 1985 The Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1985, 1990, 1993
+ *     The Regents of the University of California.  All rights reserved.

  *
  *

- * Redistribution and use in source and binary forms are permitted
- * provided that: (1) source distributions retain this entire copyright
- * notice and comment, and (2) distributions including binaries display
- * the following acknowledgement:  ``This product includes software
- * developed by the University of California, Berkeley and its contributors''
- * in the documentation or other materials provided with the distribution
- * and in all advertising materials mentioning features or use of this
- * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * 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      4.8 (Berkeley) 6/1/90
+ *     @(#)math.h      8.1 (Berkeley) 6/2/93

  */
 
  */
 

-extern double asinh(), acosh(), atanh();
-extern double erf(), erfc();
-extern double exp(), expm1(), log(), log10(), log1p(), pow();
-extern double fabs(), floor(), ceil(), rint();
-extern double lgamma();
-extern double hypot(), cabs();
-extern double copysign(), drem(), logb(), scalb();
+#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)
 #if defined(vax) || defined(tahoe)

-extern double infnan();
+/*
+ * 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
+
+#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) */
+#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+__pure double  acos __P((double));
+__pure double  asin __P((double));
+__pure double  atan __P((double));
+__pure double  atan2 __P((double, double));
+__pure double  ceil __P((double));
+__pure double  cos __P((double));
+__pure double  cosh __P((double));
+__pure double  exp __P((double));
+__pure double  fabs __P((double));
+__pure double  floor __P((double));
+__pure double  fmod __P((double, double));
+       double  frexp __P((double, int *));
+__pure double  ldexp __P((double, int));
+__pure double  log __P((double));
+__pure double  log10 __P((double));
+       double  modf __P((double, double *));
+__pure double  pow __P((double, double));
+__pure double  sin __P((double));
+__pure double  sinh __P((double));
+__pure double  sqrt __P((double));
+__pure double  tan __P((double));
+__pure double  tanh __P((double));
+
+#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
+__pure double  acosh __P((double));
+__pure double  asinh __P((double));
+__pure double  atanh __P((double));
+       double  cabs(); /* we can't describe cabs()'s argument properly */
+__pure double  cbrt __P((double));
+__pure double  copysign __P((double, double));
+__pure double  drem __P((double, double));
+__pure double  erf __P((double));
+__pure double  erfc __P((double));
+__pure double  expm1 __P((double));
+__pure int     finite __P((double));
+__pure double  hypot __P((double, double));
+#if defined(vax) || defined(tahoe)
+__pure double  infnan __P((int));
+#endif
+__pure int     isinf __P((double));
+__pure int     isnan __P((double));
+__pure double  j0 __P((double));
+__pure double  j1 __P((double));
+__pure double  jn __P((int, double));
+__pure double  lgamma __P((double));
+__pure double  log1p __P((double));
+__pure double  logb __P((double));
+__pure double  rint __P((double));
+__pure double  scalb __P((double, int));
+__pure double  y0 __P((double));
+__pure double  y1 __P((double));
+__pure double  yn __P((int, double));

 #endif
 
 #endif
 

-extern int finite();
-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();
+__END_DECLS

 
 

-#define        HUGE    1.701411733192644270e38
+#endif /* _MATH_H_ */