create new machine/_float.h which is namespace clean. create a new

MI float.h which pulls in and defines the values that are needed from
there, and repair sys/limits.h so that it defines the values it needs
as well (depending on POSIX version, XPG version, etc).  guenther has
a more exact selection of that coming for limits.h.
this also fixes a few mistakes for the vax.
reviewed by kettenis and guenther.

1 files changed, 95 insertions, 0 deletions

diff --git a/include/float.h b/include/float.h
new file mode 100644
index 00000000000..24ffe8bcb1c
--- /dev/null
+++ b/include/float.h
@@ -0,0 +1,95 @@
+/*	$OpenBSD: float.h,v 1.1 2012/06/26 16:16:16 deraadt Exp $	*/
+
+/*
+ * Copyright (c) 1989 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. 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.
+ */
+
+#ifndef _FLOAT_H_
+#define _FLOAT_H_
+
+#include <sys/cdefs.h>
+#include <machine/_float.h>
+
+__BEGIN_DECLS
+int __flt_rounds(void);
+__END_DECLS
+
+#define FLT_RADIX	__FLT_RADIX		/* b */
+#define FLT_ROUNDS	__FLT_ROUNDS
+
+#if __ISO_C_VISIBLE >= 1999
+#define FLT_EVAL_METHOD	__FLT_EVAL_METHOD	/* long double */
+#endif
+
+#define FLT_MANT_DIG	__FLT_MANT_DIG		/* p */
+#define FLT_EPSILON	__FLT_EPSILON		/* b**(1-p) */
+#ifndef FLT_DIG
+#define FLT_DIG		__FLT_DIG		/* floor((p-1)*log10(b))+(b == 10) */
+#endif
+#define FLT_MIN_EXP	__FLT_MIN_EXP		/* emin */
+#ifndef FLT_MIN
+#define FLT_MIN		__FLT_MIN		/* b**(emin-1) */
+#endif
+#define FLT_MIN_10_EXP	__FLT_MIN_10_EXP	/* ceil(log10(b**(emin-1))) */
+#define FLT_MAX_EXP	__FLT_MAX_EXP		/* emax */
+#ifndef FLT_MAX
+#define FLT_MAX		__FLT_MAX		/* (1-b**(-p))*b**emax */
+#endif
+#define FLT_MAX_10_EXP	__FLT_MAX_10_EXP	/* floor(log10((1-b**(-p))*b**emax)) */
+
+#define DBL_MANT_DIG	__DBL_MANT_DIG
+#define DBL_EPSILON	__DBL_EPSILON
+#ifndef DBL_DIG
+#define DBL_DIG		__DBL_DIG
+#endif
+#define DBL_MIN_EXP	__DBL_MIN_EXP
+#ifndef DBL_MIN
+#define DBL_MIN		__DBL_MIN
+#endif
+#define DBL_MIN_10_EXP	__DBL_MIN_10_EXP
+#define DBL_MAX_EXP	__DBL_MAX_EXP
+#ifndef DBL_MAX
+#define DBL_MAX		__DBL_MAX
+#endif
+#define DBL_MAX_10_EXP	__DBL_MAX_10_EXP
+
+#define LDBL_MANT_DIG	__LDBL_MANT_DIG
+#define LDBL_EPSILON	__LDBL_EPSILON
+#define LDBL_DIG	__LDBL_DIG
+#define LDBL_MIN_EXP	__LDBL_MIN_EXP
+#define LDBL_MIN	__LDBL_MIN
+#define LDBL_MIN_10_EXP	__LDBL_MIN_10_EXP
+#define LDBL_MAX_EXP	__LDBL_MAX_EXP
+#define LDBL_MAX	__LDBL_MAX
+#define LDBL_MAX_10_EXP	__LDBL_MAX_10_EXP
+
+#if __ISO_C_VISIBLE >= 1999
+#define DECIMAL_DIG	__DECIMAL_DIG
+#endif
+
+#endif	/* _FLOAT_H_ */