auto import from //depot/cupcake/@135843
diff --git a/libm/src/fpmath.h b/libm/src/fpmath.h
new file mode 100644
index 0000000..879bd7b
--- /dev/null
+++ b/libm/src/fpmath.h
@@ -0,0 +1,72 @@
+/*-
+ * 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: src/lib/libc/include/fpmath.h,v 1.3 2005/02/06 03:23:31 das Exp $
+ */
+
+#include <endian.h>
+#include "_fpmath.h"
+
+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 {
+/* #ifdef __ARMEB__ */
+#if (__BYTE_ORDER == __BIG_ENDIAN) || (defined(__arm__) && !defined(__VFP_FP__))
+ unsigned int manh :20;
+ unsigned int exp :11;
+ unsigned int sign :1;
+ unsigned int manl :32;
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+ unsigned int manl :32;
+ unsigned int manh :20;
+ unsigned int exp :11;
+ unsigned int sign :1;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+ unsigned int sign :1;
+ unsigned int exp :11;
+ unsigned int manh :20;
+ unsigned int manl :32;
+#endif
+ } bits;
+};