import winsup-2000-02-17 snapshot

winsup/mingw/include/math.h

@@ -0,0 +1,182 @@
+/* 
+ * math.h
+ *
+ * Mathematical functions.
+ *
+ * This file is part of the Mingw32 package.
+ *
+ * Contributors:
+ *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
+ *
+ *  THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ *  This source code is offered for use in the public domain. You may
+ *  use, modify or distribute it freely.
+ *
+ *  This code is distributed in the hope that it will be useful but
+ *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+ *  DISCLAMED. This includes but is not limited to warranties of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * $Revision$
+ * $Author$
+ * $Date$
+ *
+ */
+
+#ifndef _MATH_H_
+#define _MATH_H_
+
+/* All the headers include this file. */
+#include <_mingw.h>
+
+/*
+ * Types for the _exception structure.
+ */
+
+#define	_DOMAIN		1	/* domain error in argument */
+#define	_SING		2	/* singularity */
+#define	_OVERFLOW	3	/* range overflow */
+#define	_UNDERFLOW	4	/* range underflow */
+#define	_TLOSS		5	/* total loss of precision */
+#define	_PLOSS		6	/* partial loss of precision */
+
+/*
+ * Exception types with non-ANSI names for compatibility.
+ */
+
+#ifndef	__STRICT_ANSI__
+#ifndef	_NO_OLDNAMES
+
+#define	DOMAIN		_DOMAIN
+#define	SING		_SING
+#define	OVERFLOW	_OVERFLOW
+#define	UNDERFLOW	_UNDERFLOW
+#define	TLOSS		_TLOSS
+#define	PLOSS		_PLOSS
+
+#endif	/* Not _NO_OLDNAMES */
+#endif	/* Not __STRICT_ANSI__ */
+
+
+#ifndef RC_INVOKED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * HUGE_VAL is returned by strtod when the value would overflow the
+ * representation of 'double'. There are other uses as well.
+ *
+ * __imp__HUGE is a pointer to the actual variable _HUGE in
+ * MSVCRT.DLL. If we used _HUGE directly we would get a pointer
+ * to a thunk function.
+ *
+ * NOTE: The CRTDLL version uses _HUGE_dll instead.
+ */
+
+#ifndef __DECLSPEC_SUPPORTED
+
+#ifdef __MSVCRT__
+extern double*	__imp__HUGE;
+#define	HUGE_VAL	(*__imp__HUGE)
+#else
+/* CRTDLL */
+extern double*	__imp__HUGE_dll;
+#define	HUGE_VAL	(*__imp__HUGE_dll)
+#endif
+
+#else /* __DECLSPEC_SUPPORTED */
+
+#ifdef __MSVCRT__
+__MINGW_IMPORT double	_HUGE;
+#define	HUGE_VAL	_HUGE
+#else
+/* CRTDLL */
+__MINGW_IMPORT double	_HUGE_dll;
+#define	HUGE_VAL	_HUGE_dll
+#endif
+
+#endif /* __DECLSPEC_SUPPORTED */
+
+struct _exception
+{
+	int	type;
+	char	*name;
+	double	arg1;
+	double	arg2;
+	double	retval;
+};
+
+
+double	sin (double);
+double	cos (double);
+double	tan (double);
+double	sinh (double);
+double	cosh (double);
+double	tanh (double);
+double	asin (double);
+double	acos (double);
+double	atan (double);
+double	atan2 (double, double);
+double	exp (double);
+double	log (double);
+double	log10 (double);
+double	pow (double, double);
+double	sqrt (double);
+double	ceil (double);
+double	floor (double);
+double	fabs (double);
+double	ldexp (double, int);
+double	frexp (double, int*);
+double	modf (double, double*);
+double	fmod (double, double);
+
+
+#ifndef	__STRICT_ANSI__
+
+/* Complex number (for cabs) */
+struct _complex
+{
+	double	x;	/* Real part */
+	double	y;	/* Imaginary part */
+};
+
+double	_cabs (struct _complex);
+double	_hypot (double, double);
+double	_j0 (double);
+double	_j1 (double);
+double	_jn (int, double);
+double	_y0 (double);
+double	_y1 (double);
+double	_yn (int, double);
+int	_matherr (struct _exception *);
+
+#ifndef	_NO_OLDNAMES
+
+/*
+ * Non-underscored versions of non-ANSI functions. These reside in
+ * liboldnames.a. Provided for extra portability.
+ */
+double cabs (struct _complex);
+double hypot (double, double);
+double j0 (double);
+double j1 (double);
+double jn (int, double);
+double y0 (double);
+double y1 (double);
+double yn (int, double);
+
+#endif	/* Not _NO_OLDNAMES */
+
+#endif	/* Not __STRICT_ANSI__ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* Not RC_INVOKED */
+
+#endif	/* Not _MATH_H_ */
+