fix silly indirect-through-zero bug

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

diff --git a/usr/src/include/math.h b/usr/src/include/math.h
index b8f4e15..babeca4 100644 (file)
--- a/usr/src/include/math.h
+++ b/usr/src/include/math.h
@@ -1,20 +1,106 @@
-/*     math.h  4.4     %G%     */
-
-extern double asinh(), acosh(), atanh();
-extern double erf(), erfc();
-extern double exp(), expm1(), log(), log10(), log1p(), pow();
-extern double fabs(), floor(), ceil();
-extern double lgama();
-extern double hypot(), cabs();
-extern double copysign(), drem(), logb(), scalb();
-extern int finite();
-#ifdef vax
-extern double infnan();
+/*
+ * Copyright (c) 1985, 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ *
+ *     @(#)math.h      5.8 (Berkeley) %G%
+ */
+
+#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
 #endif

-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
+__END_DECLS
+
+#endif /* _MATH_H_ */