Moved to a more openbsd-like fenv.h
Factored out common declarations to include/fenv.h and pushed
the implementation to .c files.
Bug: 11050744
Change-Id: I446b13cc4bc599d328343a8d392b07de280f6304
diff --git a/libm/include/i387/machine/fenv.h b/libm/include/i387/machine/fenv.h
new file mode 100644
index 0000000..f3fabb6
--- /dev/null
+++ b/libm/include/i387/machine/fenv.h
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 2004-2005 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/msun/i387/fenv.h,v 1.4 2005/03/17 22:21:46 das Exp $
+ */
+
+#ifndef _I387_FENV_H_
+#define _I387_FENV_H_
+
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+/*
+ * To preserve binary compatibility with FreeBSD 5.3, we pack the
+ * mxcsr into some reserved fields, rather than changing sizeof(fenv_t).
+ */
+typedef struct {
+ __uint16_t __control;
+ __uint16_t __mxcsr_hi;
+ __uint16_t __status;
+ __uint16_t __mxcsr_lo;
+ __uint32_t __tag;
+ char __other[16];
+} fenv_t;
+
+typedef __uint16_t fexcept_t;
+
+/* Exception flags */
+#define FE_INVALID 0x01
+#define FE_DENORMAL 0x02
+#define FE_DIVBYZERO 0x04
+#define FE_OVERFLOW 0x08
+#define FE_UNDERFLOW 0x10
+#define FE_INEXACT 0x20
+#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_DENORMAL | FE_INEXACT | \
+ FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
+
+/* Rounding modes */
+#define FE_TONEAREST 0x0000
+#define FE_DOWNWARD 0x0400
+#define FE_UPWARD 0x0800
+#define FE_TOWARDZERO 0x0c00
+#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \
+ FE_UPWARD | FE_TOWARDZERO)
+
+__END_DECLS
+
+#endif /* !I387_FENV_H_ */