1 files changed, 75 insertions, 0 deletions
diff --git a/lib/libc/include/fpmath.h b/lib/libc/include/fpmath.h
new file mode 100644
index 0000000..697d582
--- /dev/null
+++ b/lib/libc/include/fpmath.h
@@ -0,0 +1,75 @@
+/*-
+ * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
+ * Copyright (c) 2002 David Schultz <das@FreeBSD.ORG>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/endian.h>
+#include "_fpmath.h"
+
+#ifndef _IEEE_WORD_ORDER
+#define	_IEEE_WORD_ORDER	_BYTE_ORDER
+#endif
+
+union IEEEf2bits {
+	float	f;
+	struct {
+#if _BYTE_ORDER == _LITTLE_ENDIAN
+		unsigned int	man	:23;
+		unsigned int	exp	:8;
+		unsigned int	sign	:1;
+#else /* _BIG_ENDIAN */
+		unsigned int	sign	:1;
+		unsigned int	exp	:8;
+		unsigned int	man	:23;
+#endif
+	} bits;
+};
+
+#define	DBL_MANH_SIZE	20
+#define	DBL_MANL_SIZE	32
+
+union IEEEd2bits {
+	double	d;
+	struct {
+#if _BYTE_ORDER == _LITTLE_ENDIAN
+#if _IEEE_WORD_ORDER == _LITTLE_ENDIAN
+		unsigned int	manl	:32;
+#endif
+		unsigned int	manh	:20;
+		unsigned int	exp	:11;
+		unsigned int	sign	:1;
+#if _IEEE_WORD_ORDER == _BIG_ENDIAN
+		unsigned int	manl	:32;
+#endif
+#else /* _BIG_ENDIAN */
+		unsigned int	sign	:1;
+		unsigned int	exp	:11;
+		unsigned int	manh	:20;
+		unsigned int	manl	:32;
+#endif
+	} bits;
+};